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VDI Wissensforum GmbH - International Conference on Gears 2023

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VDI Wissensforum GmbH (ed.)

International Conference on Gears 2023

Series: VDI-Berichte

Volume 2422 2023

Results in this title

E. Virtanen, M. Kanerva, G. Szanti Fatigue testing of large sized bevel gears S. 897-906

„… Fatigue testing of large sized bevel gears M.Sc. Erkka Virtanen, Prof. Mikko Kanerva, Tampere …” „… based on endurance tests performed on relatively small-size test gears and testing equipment, such as …” „… lubrication circuit, making the rig suitable also for testing and development of EAL lubricants. The test …”

B. Devaux, C. Hamon, S. Montani Evaluation of specialty polymer performances in gear applications and the bias between modeling and testing approaches S. 1515-1532

„… testing approachesB. Devaux, Solvay Material Science Application Center, Solvay Sa., Brussels, Belgium; C …” „… physical testing for future customer applications. This FE method involves the notion of wear energy …” „… one for weight loss evaluation;- Final geometry of the gear after testing, obtained by 3D scanning.2.3 …”

T. Tra My Truong, S. Schumann, B. Schlecht On the Testing of Flank Fracture Calculations Based on 3D-Gears S. 243-256

„… On the Testing of Flank Fracture Calculations Based on 3D-Gears Dipl.-Ing. Thi Tra My Truong …”

L. Braumann, H. Amri, V. S. Viteri, J. Ochoa LUBGEAR – Experimental Campaign for Aviation Gears in Loss-of- Lubrication S. 1063-1070

„… technologies to increase the life of aviation gears under LOL. Successful and efficient experimental testing …” „… under LOL requires special experimental methods and test article designs. Benefits of testing strategies …” „… investigates surface technologies to increase the life of aviation gears under LOL. Testing and evaluation of …”

A. Alnahlaui, P. Tenberge Optimised statistical evaluation for the determination of tooth root endurance strength S. 19-32

„… testing of gears. To increase the accuracy by the determination of the gear reliability and in order to …” „… influences like the testing strategy, the number and standard deviation of the tested samples. Moreover, the …” „… ways of testing gears regarding tooth root fatigue strength. The first is testing on a running test …”

S. Matkovič, D. Šeruga, M. Nagode, M. Kalin Prediction of tooth root fatigue failure of polymer gears for dry and oil lubricated contact and its comparison to experimentally obtained results S. 1301-1318

„… the chosen material need to be detailed study on the gear testing rigs to obtain lifetime curves and …” „… , especially at the practical level where the data for predictive models are generated, i.e. testing. If the …” „… fatigue life testing of polymer gears. Another parameter to consider in root-fatigue evaluation is the …”

I. Hong, D. Talbot Tooth Bending Strain Rate Analysis in a Counter Shaft Drivetrain and Implications on Fatigue Strength S. 53-66

„… VHCF regime. This in turn creates a need for high-speed testing methodologies and an understanding of …” „… testing at matched strain rates are outlined …” „… test results between ultrasonic and convention testing was done by Mayer [2] and a 2021 review done by …”

D. Zorko, N. Vukašinović, B. Černe The effect of gear manufacturing quality on the mechanical and thermal state of a plastic gear S. 1319-1332

„… grade was e25 (DIN 3967 [13]), with tooth thickness tolerances -0.03/-0.06 mm. Gear testing was …” „… conducted on a dedicated gear testing rig presented in Fig. 5. The gear testing rig was positioned in a …” „… set-up for plastic gear testing 2.2.2. Determining the effect of geometrical deviations on the heat …”

J. Cathelin Plastic Gears: Investigation on Noise and NVH Behavior S. 1449-1460

„… Plastic-Plastic) are tested on an open loop gear test rig. For each testing condition the noise and vibration …” „… was used. A total of 18 gears were used for testing of each combination. For all material combinations …” „… tested gear pair could be measured, without an influence from other noise sources. The testing setup is …”

T. Schmidt, B. Neubauer, D. Merk White Etching Cracks (WECs) on gears of E-Axle applications S. 257-268

„… short time of testing and therefore it can be concluded that WECs grow already in the low-load test and …” „… combination with high energy density, bring up the need for new testing methods for oils. For this purpose …” „… , Hr. Lehne, Hr. Hartmann [5] DIN 51819-1; Testing of Lubricants-Mechanical-Dynamic Testing in the …”

T. Jagiella, S. Haller, J. Lechner, T. Rung, M. Wöppermann, B. Zeeb Building a software toolchain for automated mass-customization of specific end-use gear unit parts using AM-driven design guidelines S. 1607-1616

„… from the CAD to the CAM system. 5. Part testing Sample parts were designed using the software and …” „… number of cycles for emergency stop torque). After testing, the 3D-printed component was examined for …” „… testing will be conducted to evaluate the necessity of fine tuning support structure generation and part …”

S. Birk, E. Stoppel, V. Labriola Influence of plastic-metal-pairings on the lifetime of gears S. 1535-1546

„… testing due to high contact pressure in the area of the root of plastic gear as shown in Fig. 5. The …” „… : Comparison of contact normal pressure The following 50% SN-curve shows the testing results of the plastic …” „… possible to see that for short term testing the lifetime was slightly decrease whereas for the long term …”

A. Drechsel, J. Pellkofer, K. Stahl Transferability of the scuffing load capacity of gear oils determined on spur gears to hypoid gears S. 881-896

„… test methods are reached. In order to ensure testing highly additivated hypoid oils as close as …” „… number of different test methods for testing the scuffing load carrying capacity of gear oils. However …” „… of the scuffing load carrying capacity of high additivated hypoid oils. In addition to testing gear …”

D. Gallagher, E. Wiita, R. Weidig Improved Method for Validation of Root Stress in Polymer Gears S. 1333-1350

„… stress calculation standards and the use of mechanical testing of representative injection moulded …” „… Single Tooth Bend testing, with stress at the critical point calculated using the hybrid approach …” „… described in previous sections. 10. The Principles of Single Tooth Bend Testing Single Tooth Bend (STB …”

L. Bonaiti, M. Brambilla, P. Chiariotti, A. Cigada, C. Gorla, G. Boni, P. Codeluppi The effect of pinion axial positioning on noise and transmission error of face hobbed and face milled bevel gears S. 839-852

„… , to enable testing gearboxes with two outputs, as it happens in vehicle axles. This reconfigurable …” „… harmonic of TE for FH vs. axial position A comparison between the different testing conditions is shown in …” „… different testing conditions. The coast running condition seems to be quiter than the drive one. Fig. 9 and …”

T. König, L. Cadau, L. Steidle, M. Kley, D. Cansu Güney, J. Albrecht, K. Weber A concept for comparison of new and aged lubricants in transmissions of electric vehicles and a method of oil aging on a test rig S. 1195-1206

„… testing. [15] Through normal operation of a transmission, changes in the viscosity and additive content …” „… for testing is necessary to determine the chemical and physical parameters. Furthermore, a method for …” „… during transmission testing and had a running time of approximately 80 hours. For this, rheological and …”

B. Černe, N. Vukašinović, D. Zorko In-situ experimental methods for measuring tooth meshing displacements and wear during polymer gear tests using a high-speed camera with microscopy optics S. 1563-1580

„… accelerating gear wear testing, which is often tedious to perform and, in some cases, subjective to human …” „… the testing described in the following pages was selected in line with the noted studies. Here, the …” „… air can be used to clear the gear teeth during testing as much as possible …”

U. Cihak-Bayr, T. Wopelka, C. Wintersteiger Effect of LOL conditions under high velocity and high injection temperatures S. 763-778

„… entrainment velocity. The developed LOL testing procedure revealed a strong influence of the frictional energy …” „… determined perpendicular to the testing surface in radially cut metallic cross sections confirmed a hardening …” „… testing for Gear Lubricants in “Bench testing of industrial fluid lubrication and wear properties” by …”

J.-H. Park, B.-S. Kim, D. Im, D.-J. Moon, J.-H. Kim, Y.-J. Park Development of Damage-based Accelerated Life Test Code for Gearbox using Genetic Algorithm S. 329-340

„… is practically impossible to verify the life of a mechanical element through testing as much as the …” „… within a shortened time by testing under harsher load environmental conditions than existing use …” „… . [6] Liao, H., & Li, Z. (2008). Multiobjective design of equivalent accelerated life testing plans …”

G. Vasileiou, C. Vakouftsis, C. Kalligeros, V. Spitas, C. Papalexis, A. Tsolakis, P. Zalimidis Continuous prestressed reinforcement of plastic gear teeth and its effect on bending strength vs conventional reinforcement S. 1375-1388

„… 10mm width. To reduce material usage and ensure proper fixation for the testing machine, only a …” „… resin The specimens were evaluated using an INSTRON 4482 universal testing machine, at a rate of 5 …” „… the observed results. Fig. 11: Specimen fixation on the INSTRON testing machine Fig 12: Failure photos …”

C. M. C. G. Fernandes, J. M. A. Pinto, D. E. P. Gonçalves, A. R. Silva Reduction of root and flank temperature using a hybrid polymer-metal rack S. 1547-1562

„… reference rack was achieved, but the VDI-Berichte Nr. 2422, 20231548testing conditions barely replicate real …” „… allowing a free thermal expansion of the testing sample. The rack tooth is made of POM for all test …” „… restricting the movement. To establish the desired tooth flank testing position, a proper tool with a width …”

J. Zhang, B. Shaw, A. Hammer, I. Sewell Effects of Surface Engineering on the Efficiency of Involute Helical Gears – An Experimental Investigation S. 995-1016

„… . Waight, “Basic principles of disc and gear testing-machine design,” Proc Instn Mech Engrs, vol. 182, no …” „… from spur gears [4], testing helical gears would be more representative to many real applications …” „… and evaluation repeatability were assessed by repeated testing in this investigation. In the future …”

S. Sartori, L. Alari, N. Motta, D. Podda Helicopter Drive System Safety Dissertation S. 633-644

„… and not only a required final testing phase. Dedicated test campaigns, simulation strategies and …” „… , a detailed evaluation through specific simulations and testing evidences is necessary, ensuring …” „… and simulated during the design phase, and not only limited to a required final testing phase …”

M. Willecke, J. Brimmers, C. Brecher Experimental Investigation of the load carrying capacity of beveloid gears with optimized flank topography S. 125-138

„… in a special developed back-to-back test rig. The results of the durability testing were then …” „… regarding the calculation and the testing of the load caring capacity. The calculation process is described …” „… material values. 𝜎 𝜎 Equation 1 4.2. Testing of the load caring capacity of cylindrical gears Stress …”

B. Morhard, T. Lohner, K. Stahl Influence of Surface and Material Technologies on Loss of Lubrication Performance of Gears S. 779-784

„… . Light microscope pictures before and after testing are used for damage analysis. The results show that …” „… , M.; Isaacson, A.; Black, B.; Sahay, V.: Loss of lubrication testing. AHS International 74th Annual …”

N. De Bie, W. Smet, T. Van Der Kamp Assessing gear mesh misalignment in a parallel gear set by transmission error measurements S. 291-300

„… adapted to exactly replicate contact patterns and load distribution as found during prototype testing (Fig …” „… validated simulation model, the gear mesh misalignment, effectively occurring during testing, can be derived …”

M. Yilmaz, M. Ayar, F. Zerulli, K. Humm, J. König, B. Schwarz Gearbox efficiency of eDrives: correlation between measurement and calculation of load-dependent torque losses S. 985-994

„… forces can be absorbed. Fig. 1: eDrive with axially parallel design (left) and experimental testing …” „… (right) Fig. 1 (right) shows the experimental testing at a motor-generator test rig, where the mechanical …”

K. Yanagisawa, K. Kamoshida, A. Domon Prediction of Gear Fatigue Life Considering Glass Fiber Orientation S. 1351-1360

„… used for fatigue testing was first injection molded into a flat plate as shown in FIG 7, and then the …” „… gear has four fixing holes to hold it to the device during testing. Since the gate is a disc gate and …”

Titelei/Inhaltsverzeichnis

„… Industrial and Automotive Drivetrains (IFA), Ruhr-University Bochum, GermanyOn the Testing of Flank Fracture …” „… , GermanyFatigue testing of large sized bevel gears 897E. Virtanen, M. Kanerva, Tampere University, Faculty of …” „… . Momcilovic, Institute for material testing IMS, Belgrade, SerbiaAnalysis of the tip interference in low gear …”

M. Reichl, P. Lenz, A. Oliva Challenges and possibilities of virtual development of e-axle transmissions S. 485-498

„… . This saves expensive testing and allows optimization potential to be identified early in the …” „… simulation and testing in the case of oil distribution within the significantly more complex automotive …”

J. Hongu, S. Hattori, J. Kato, T. Koide Gear friction coefficient estimation using directional parameter under ATF lubricated condition S. 753-762

„… condition. 2. Gear friction coefficient 2.1 Gear efficiency testing machine In this study, the gear friction …” „… gear-testing machine, wherein the twist mechanism loads an initial torque into the circuit, and the …”

J. D. M. Marafona, J. H. O. Seabra, P. M. T. Marques, R. C. Martins Effect of overlap ratio on gear dynamic behavior and noise level S. 1239-1256

„… work consists on a preliminary study, prior to experimental testing, on the effect of varying the …” „… 1.598 1.598 1.598 1.598 1.598/- 2.000 1.750 1.500 1.250 1.000 0.750 0.500On the nominal testing …” „… addition, the spectrum of testing conditions is broaden in what regards the speed range. The dynamic …”

J.-A. Meis Parametric system simulation of load sharing in planetary gearboxes S. 269-280

„… . Unfortunately, detailed experimental results are only available after prototype testing, which is usually too …” „… compared to Flender design limits based on field experience and material testing to make sure that no …”

A. Carvalho, R. Rego, N. Fukumasu, D. Tamayo, F. Nascimento, I. Machado PVD Deposition of Nb-MoS2 Coatings on Gear Carburized Steel S. 1071-1082

„… grinding burn [11]. As a part of the testing procedure involved using polished samples, the polishing …” „… highest H³/E² value was selected to be further explored by tribological testing, presented in Figure 4 …”

I. Atanasovska, D. Momcilovic Analysis of new tooth profile design based on the biomimetics principles S. 945-956

„… Momcilovic, Institute for material testing IMS, Belgrade, Serbia AbstractDuring the last decades, the …” „… errors of FFF printed spur gears using PLA and Nylon. Polymer Testing 117 (2023), 10786 https://doi.org …”

L. Bonaiti, M. Monti, C. Gorla, M. Geitner, T. Tobie, K. Stahl The consequences of different methodologies for the elaboration of pulsator test results with respect to the load spectrum assessment of gears S. 33-52

„… . [25] ISO Standard. ISO/DIS 12107 Metallic materials-Fatigue testing-Statistical planning and analysis …” „… mode. Within this context, several testing methodologies can be found in literature, of which pulsator …” „… /10.1007/978-94-007-1664-3_72/COVER. [6] Seabrook JB, Dudley DW. Results of a Fifteen-Year Program of Flexural Fatigue Testing …”

N. Blech, C. Paschold, T. Lohner, T. Tobie, K. Stahl, L. Amar Review of different calculation approaches for the mean coefficient of friction in ISO 6336 S. 191-210

„… GT-C/8,3/90 [16] DIN 51563:2011. Testing of Mineral Oils and Related Materials – Determination of …” „… Viscosity Temperature Relation – Slope m [17] DIN 51757:2011. Testing of mineral oils and related materials …”

U. Kissling Impact of manufacturing deviations on the NVH behavior of modern gear design concepts S. 367-382

„… without modifications) and then testing the influence of such a deviation on the required properties …”

B. van Wissen, L. Pastukhov, F. Mitsuzuka, K. Iwanaga, A. Hasanovic NVH performance of thermoplastic gears: modelling and measuring S. 1389-1402

„… influence due to the short testing time. Gear specimensThe injection molded plastic gears were molded in a …”

W. Ramdane, C. Changenet, S. S. Ouali, C. Chevrel-Fraux, P. Casanova Thermal model of a planetary gear set using an isothermal approach S. 451-466

„… (6) shows the global relative gaps observed during the different testing conditions, the proposed …”

M. Werner, S. Graf, M. Oehler, O. Koch Investigation of the electrical behavior of a spur gear stage pair by means of impedance measurements S. 67-80

„… lubricants by means of impedance measurement and breakdown testing and prelimenary examination for a …”

M. Gebhardt, A. Rhode, B. Legrady Lubrication improvement at the HS-IS spline shaft interface of a wind turbine gearbox using the smooth particle hydrodynamic method S. 519-536

„… modifications during the test are rarely possible. The main disadvantage of experimental testing, however, is …”

D. Meyering, C. Hussmann Smart Gearboxes for a Sustainable and Reliable Industry S. 645-658

„… Loads during Drivetrain Testing,“ Sensors, 2023. [4] M. Lehmkuhl, „Sustainable Gearbox Dimensioning …”

G. Guimarães, L. Robatto, R. Rego, A. Faria, A. Borille, J. Mascheroni Surface integrity of 20MnCr5 pinion gears manufactured through laser powder bed fusion S. 1845-1858

„… ] HANDBOOK, A. S. M. Vol. 4: Heat Treating. ASM international, v. 10, 1991. [12] AMERICAN SOCIETY FOR TESTING …”

L. Becker, P. Tenberge Crossed helical gears – simulative studies and experimental results on non-involute geometries S. 1499-1514

„… Mises stress, left: tooth deformation [1]4. Manufacturing and testing To introduce the new crossed …”

P. Fischmann, A. Hilligardt, V. Schulze Tooth Root Burnishing in the Kinematics of Gear Skiving S. 1829-1844

„… : Contact radius a0 at pin tip diameter d=1.60 mmPractical testing of the tool concept Bevor burnishing, the …”

S. Sklenak, D. Mevissen, J. Brimmers, C. Brecher, B. Lenz, A. Mehner Analysis of Load Cycles and Local Wear of Dry and Solid-Lubricated Gears S. 727-740

„… Cmod-gear– m = 4.5 mm– z1/2 = 16 / 24– bRoot = 20 mm– bContact = 10 mmTesting parameters– Speed n1/2 …”

F. Mieth, D. Tazir Local load capacity analysis for the design of a balanced flank modification for cylindrical gears according to bevel gear procedures S. 927-944

„… testing. The method is based on the calculation of the nominal contact stress at the pitch point H0 (0-1 …”

S. Ebrahimi, U. Kissling, C. S. Matkovič Evaluation of the NVH Characteristics of Gear Drives with Plastic Gears by the Forced Response Analysis S. 1403-1418

„… Testing, Vol. 25, pp. 56–62, 2006. [16] Sharma, A., Aggarwal, M.L., and Singh, L.: Experimental …”

A. Hilligardt, V. Schulze Gear Skiving with Minimum Twist Errors S. 1749-1764

„… adaptation was practically implemented with the boundary conditions from the testing of the process from Tab …”

J. Lövenich, M. Zalfen, D. Mevissen, J. Brimmers, C. Brecher Crack growth based tooth root life prediction model – an influence quantity analysis S. 109-124

„… capacity in pulsator testing for elevated test temperatures of 130°C for the aerospace steels Lesco 53 (AMS …”

C. Kunik, J. Kunert Wetting and oil flow analysis of planetary gearboxes using oil flow simulations S. 467-484

„… Heavy Industries, 2014. [18] Lucy LB. A numerical approach to the testing of the fission hypothesis …”

L. Klee, T. Bergs, M. Solf, J. Brimmers Binder Jetting in Gears – Process Design and Tooth Bending Strength for Gears made of 17-4PH S. 1665-1680

„… component scaling and thus the curing process as well as the debinding and sintering process. Before testing …”

M. Geitner, S. Preintner, T. Tobie, K. Stahl Simulation Study on the Tribological Characteristics in the Meshing Contact in the Context of the Load Carrying Capacity Calculation of Internal Gears with Unbalanced Sliding Conditions S. 429-450

„… film thickness (calculated from testing with standardized test gears [1, 8]). Consequently, differences …”

F. Concli, M. N. Mastrone Latest advancements in the lubrication simulations of geared systems: a technology ready for industrial applications S. 499-518

„… system. In this regard an FZG back-to-back test rig was used as reference. The testing gearbox was …”

doi.org/10.51202/9783181024225

VDI Wissensforum GmbH - ELIV-MarketPlace 2022

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ELIV-MarketPlace 2022

Series: VDI-Berichte

Volume 2405 2022

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K. Chung Understand and Testing AI Decisions with Explainable AI S. 249-256

„… AI Software TestingWhat is the AI looking at?Is it feasible?Is it understandable?Where are …” „… Understand and Testing AI Decisions with Explainable AI Dr. Khanlian Chung, Vector Informatik …” „… AI components must be tested thoroughly, which is not a trivial task: Classic software testing …”

U. Bodenhausen Comprehensive Test Strategy for AI Based Systems – From AI Test Principles to T est Optimization S. 265-282

„… AutomotivePrinciples of AI TestingEvidence Level of AI TestingSummaryAgenda2/31VDI-Berichte Nr. 2405, 2022266© 2022 …” „… | 2022-09-30AI in AutomotivePrinciples of AI TestingEvidence Level of AI TestingSummaryAgenda9/31© 2022. Vector …” „… approval by Vector. V1.0 | 2022-09-30Four Principles for Deep AI Testing*Principles of AI TestingKeep Test …”

A. Ropers Virtual E/E Test Platform – co-exploration, optimization and validation of ECU architecture and software in the context of the car S. 9-18

„… & validation efforts for dependable, safe & secure software; move from physical to virtual testing→Technology …” „… fast validation platform Productivity tools from modeling to testingMulti abstraction, scalable from …” „… led to an enormous amount of complexity in software development and testing. Today, we see many …”

J. Walther, S. Breitkreutz, L. Dreißig End-to-end Continuous Integration and Test enabled by Continental’s Cooperation Portal and Volkswagen’s Compound Test System S. 29-36

„… ManagementService DeskIntegrationBuildingDependecyManagement TestingVDI-Berichte Nr. 2405, 202230PublicJ. Walther, S …” „… WorkflowCompound Testing Interface Continental – VolkswagenReleaseRapid testing before the full release …” „… . DreißigReleaseRapid testing before the full release qualification processStandardized delivery chain among suppliers …”

N. Kechler, Eric Sax Big Data Analytics for a seamless Design Flow of reliable Automated Driving Functions S. 257-264

„… vehicle. Big Data Analytics ensure a seamless design flow from requirements management to testing of …” „… during simulation, testing, prototyping and operations for machine learning and quality assurance issues …” „… generation and latest methods of testing. 2. Various sensors and the internal vehicle data are the basis of a …”

V. Anselm, I. Kotori Mastering Data Replay and HIL for ADAS and AD together S. 145-158

„… ADAS Replay and HIL TestingTARGET STIMULATIONRAW DATAOBJECT LISTReplay and HIL SystemNETWORK …” „… of driving scenarios across all testing platforms, with NI’s solutions for hardware and software in …” „… Much Testing is Needed?INDUSTRY LOOKBACK ON WHY REPLAY AND HARDWARE-IN-THE-LOOP TEST IS …”

M. Baumann, I Kaiser Credible Simulation – Do you trust your simulation models? S. 137-144

„… product development: faster results without complex tests with real prototypes, extensive testing in the …” „… testing can significantly improve product quality and reduce the number of bugsVirtual models & simulation …”

Titelei/Inhaltsverzeichnis

„… ? � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �1 J. Flemming, P3 automotive GmbH, Stuttgart f Architecture/Engineering – TestingVirtual E/E Test …” „… – Opportunities and ChallengesUnderstand and Testing AI Decisions with Explainable AI …”

M. Dargel, L. Bublitz Lessons learned from current developments of highly automated driving functions (SAE Level 3 and 4) and derivation of future success factors S. 69-78

„… volatile environmentMilestones according to waterfall logicIndependent work streams (R&D, testing …” „… (JIRA + plug-ins) Additionally special developing or testing tools – no single point of truthClassical …”

V. Horvath, H. Laine, G. Blahut, A. Késmárki, M. Pfeifle Streaming Map Data Efficiently from Cloud to ECUs – A Cost-Efficient and Self-Adapting Solution for Intelligent Speed Assistance S. 239-248

„… (explained in Section 4). For testing the approach described in Section 4, we compared the variants shown in …” „… state-of the art in the automotive industry. VDI-Berichte Nr. 2405, 2022246 For testing Section 3, we …”

F. Klebert NDS – The Development and Use of a Worldwide Standard for Map Data S. 315-324

„… simulationClosed loop testing of automated drivingfunctions using NDS mapsSource: BMW, dSpace keynote @ NDS …”

Manuel Gärtner, Nadia Lecci New STi2GaNTM technology for ultra-fast switching automotive applications S. 121-132

„… products is in the emulation stage and shall be followed by product design testing. 4. Further …”

doi.org/10.51202/9783181024058

VDI Wissensforum GmbH - Plastics in Automotive Engineering PIAE EUROPE

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VDI Wissensforum GmbH (ed.)

Plastics in Automotive Engineering PIAE EUROPE

Series: VDI-Berichte

Volume 2343 2019

Results in this title

T. Wagner New testing techniques as a support for innovations in plastics development – Material testing as a building-block of product development S. 325-336

„… New testing techniques as a support for innovations in plastics development Material testing as …” „… fields of test technology are described. (1) Methods of fire testing for safety-related components that …” „… manufacturing process. (2) Methods of destructive mechanical testing to describe the product characteristics …”

M. Gross, M. Oehm, M. Richter, G. Oberhofer Integrative crash simulation of short- fiber-reinforced thermoplastics (SFRT) – Investigation of phenomenologically based material modeling S. 97-114

„… other hand, as shown in Fig. 1. Fig. 1: Lower-leg testing with Flex PLI GTR impactor (Humanetics …” „… kidney grille shows only a small crack directly at the testing position. The bonnet shows a plastic …” „… deformation on the edge directly at the testing position. VDI-Berichte Nr. 2343, 2019 99 Fig. 2 …”

D. Degenhardt, L. Greve Elasto-viscoplastic temperature-dependent material model for a talc-filled PP/PE copolymer S. 57-76

„… universal testing machine with a 50kN load cell was used, for the high-speed tests a hydraulic high-speed …” „… tensile testing machine. The results of the dynamic tensile tests at the ambient temperatures of the …” „… The first validation of the temperature-dependent material model is by biaxial tensile testing at …”

G. Burk, J. Boës, C. Köhler, J. Werner Porsche 911 Turbo carbon wheel S. 407-418

„… testing is based on a test stand and does not take operating temperatures into account. In the case of …” „… testing and release, various endurance trials and other tests are already available today in which high …” „… using non-destructive testing technology. All processing steps, from cutting the fiber layers to final …”

Titelei/Inhaltsverzeichnis

„… New testing techniques as a support for innovations in plastics development – Material testing as a …”

P. Malzkorn, R. Apfelbeck New design opportunities for the aerodynamic and acoustic optimization of the underbody in fully electrified vehicles S. 431-440

„… design of the component. Fig. 11: Audi e-tron dust testing [1 …” „… requirements. Fig. 12: Audi e-tron in cold-climate testing [1] VDI-Berichte Nr. 2343, 2019 439 Future topics …”

C. Gundlach, S. Hartwig, M. Mannig, K. Dilger, M. Menzel, P. Lück Application of a hybrid test specimen for designing potting compounds in automotive electric-drive motors S. 201-216

„… , such as the dumbbell test specimen in tensile testing, can represent both thermomechanical aging and …” „… the exposure for all test specimens as needed. 6. Initial testing and evaluation of the test …” „… specimen permits the production and testing of large quantities, the results are also statistically secured …”

S. Glaser, A. Wonisch, D. Fertig Thermomechanical simulation of glass-fiber-reinforced plastic components with Ultrasim® S. 115-132

„… bars can be tested for low strain rates (up to 0.1 1/s) in a standard tensile testing machine, while …”

D. Degenhardt, L. Greve Elasto-viskoplastisches temperaturabhängiges Materialmodell für ein Talkum-gefülltes PP/PE Copolymer S. 77-96

„… 29/wp29wgs/wp29gen/wp29fdocstts.html [3] Greve, L., Fehrenbach, C: Mechanical testing and …”

M. Trenktrog, C. Massonet, J. Ludwig, D. Backes Design and validation of functionally integrated interior components for energy-efficient vehicle cabin heating S. 233-254

„… . 2343, 2019 243 5. Testing and validation In order to quantify the potential for reducing energy …”

M. Haverkamp Multisensory appearance of traditional and innovative surfaces – Optimal design for all senses S. 471-490

„… physical hardness of the material which can be determined by conventional material testing techniques …”

A. Falke, M. Bohn, T. A. Osswald The systematic path to dimensionally stable plastic components – Differentiation of acceptance dimensions and utilization dimensions S. 277-300

„… costintensive manufacturing processes and also to increased outlay on testing and reworking. On the other hand …”

doi.org/10.51202/9783181023433

VDI Wissensforum GmbH - Testen und Validieren elektrischer Antriebsstränge

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VDI Wissensforum GmbH (ed.)

Testen und Validieren elektrischer Antriebsstränge

Series: VDI-Berichte

Volume 2412 2023

Results in this title

F. Duchi, M. Ivarson, B. Wultsch Novel Methodology of E-Drive testing, calibration and optimization S. 45-72

„… Novel Methodology of E-Drive testing, calibration and optimization  Newest test equipment for …” „… model-based testing methodology can be used to improve both the design of the E-Motor as well as the control …” „… same time securing the system performance, characteristics and durability. We are using two testing …”

A. J. Wimmer, T. Pletzer Testen bei hohen Drehzahlen und höchsten Leistungen: Herausforderungen und Lösungen – Innovative Prüfstandsaufbauten und Nachrüstlösungen für bestehende Systeme S. 1-18

„… Prüfstandsaufbauten und Nachrüstlösungen für bestehende Systeme Testing of High Power Drive Trains at High Speeds …” „… : Challenges and Solutions Innovative Test Rig Layouts and Retrofit of Existing Testing Facilities Dr. Albert …” „… Zusammenfassung Die Anforderungen im Testing von Baugruppen und Komponenten im Antriebsstrangbereich wandeln sich …”

R. Heckmann Plattformbasierte modulare Anlagenlösungen erzeugen Synergien für die Funktionsprüfung des gesamten e-Antriebssystems – Funktionsprüfung für e-Antriebe S. 19-24

„… functional testing of the entire e-drive system Functional Testing for e-drives Dipl.-Ing. Ralph Heckmann …” „… individual systems are checked for functionality during end-of-line testing of the assembled e-drive. This …” „… article examines two questions: During functional testing of the inverter sub-system, is there same …”

Titelei/Inhaltsverzeichnis

„… , Institut für Antriebs- und Fahrzeugtechnik, Universität Kassel, Kassel Battery TestingModellgestützte …” „… Antriebsumrichtern in einer virtuellen Umgebung bei voller Leistung 25M. Fischer, dSPACE GmbH, Paderborn Testing …” „… . Trost, P3 automotive GmbH, StuttgartNovel Methodology of E-Drive testing, calibration and optimization …”

E. Pohl Inside ISO 21498 – Einblicke eines Insiders S. 99-100

„… testing of this topic was mostly regulated in OEM specific standards e.g., MBN11123 or VW80303, which led …” „… international automotive standard for electrical testing of HV components. In this presentation an overview of …”

J. Mathä Hochvolt-Messtechnik und NVH-Analysen am Antriebsstrang S. 133-138

„… nur einem Messaufbau lösen und damit Testing-Prozesse nachhaltig beschleunigen. Bild 3 …” „… aufwendiges, manuelles Nachbereiten der Daten erforderlich. Da Testing- und Engineering-Aufgaben allerdings …” „… Performance- und NVH-Testing – Komfortmessung des Antriebs (Müller-BBM VibroAkustik Systeme). Durch die …”

F. Kaul, A. Spranger, K.-F. Wittwer Prüfung „angelegte Spannungswelligkeit“: Von der Norm zur Durchführung S. 101-110

„… increasing use of high voltage components in vehicles and the importance of testing the effects of voltage …” „… therefore the standard cannot be met. In addition, various problems in testing the applied voltage ripple …” „… are described and a mobile test bench (IAV Auros) used for testing HV DUTs is presented. The test …”

M. Fischer Test von Antriebsumrichtern in einer virtuellen Umgebung bei voller Leistung S. 25-36

„… Testing in a Virtual Environment at Full Power Manuel Fischer, dSPACE GmbH, Paderborn Kurzfassung Die …” „… environment can accelerate the development and testing process of traction inverters due to increased …” „… .: Enhanced Power Electronics System for High-Performance Testing of Motor Control Units in a Power HIL …”

J. Teigelkötter, J. Büdel, K. Kuhlmann Stoßstromversuche zur Qualifizierung von sicherheitsrelevanten Komponenten im Antriebsstrang eines Elektrofahrzeuges S. 161-172

„… . Teigelkötter, A. Stock, K. Kuhlmann, K. Lang, und P. Ott: Testing of High-Power Traction Batteries. SMSI 2021 …”

T. Kaufmann Rules and regulations for the safety of high-voltage batteries – a global overview S. 91-98

„… ] https://heavyindustries.gov.in/writereaddata/UploadFile/MHI_Guidelines_ Testing_parameters_for_EV.pdf VDI-Berichte Nr. 2412, 202398 …”

R. Matthies Abtastwertauflösende Plausibilisierungsmethoden für DC- und AC-Stromgrößen mit hohen Abtastraten S. 111-120

„… drive systems in testing. For this reason, Porsche AG uses measurement systems that record at a rate up …”

doi.org/10.51202/9783181024126

VDI Wissensforum GmbH - International Conference on Gears 2022

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VDI Wissensforum GmbH (ed.)

International Conference on Gears 2022

Series: VDI-Berichte

Volume 2389 2022

Results in this title

M. Zalfen, J. Lovenich, O. Malinowski, C. Brecher, J. Brimmers, S. Neus, S. Stark, D. Kruger Test rig concept for high power VHCF gear testing S. 485-498

„… Test Rig Concept for High Power VHCF Gear Testing Moritz Zalfen, M.Sc., Johannes Lövenich, Oscar …” „… turbo gearbox applications. The lack of testing concepts and models for Very High Cycle Fatigue (VHCF …” „… applications. However, VHCF design guidelines and testing concepts essentially are required for the bending …”

I. Hong, Z. Teaford, A. Kahraman A comparison of gear tooth bending fatigue lives from single tooth bending and rotating gear tests S. 45-74

„… application and service time. Fatigue testing on gear specimens has been preferred metric on which to base …” „… used for this purpose. STB type tests generally form the large majority of gear fatigue testing due to …” „… (SN) relationship regressed through STB testing compares to that produced in RG testing. In this …”

R. Longato, M. Turci The effect of temperature on the SN curve for bending stress measured on a new test rig for plastic gears S. 1209-1222

„… requirements of the VDI 2736-4. The paper describes the testing procedure, showing how data are acquired and …” „… motor used for the driven gear (plastic, subject to testing), which acts as a brake with recirculation …” „… of electric power to minimize electrical consumption while performing testing. Checking of rotation …”

D. Zorko, Z. Bergant, B. Černe Potential of woven carbon fiber reinforced polymer composite gears S. 1071-1082

„… temperature was measured during testing with a thermal camera. The damage on gears was monitored every 2 …” „… million cycles of testing using a high-resolution, optical digital microscope. Five such test runs were …” „… VDI-Berichte Nr. 2389, 2022 10732.3. Testing The gears were tested on a special in-house developed gear pair …”

D. Mevissen, L. Uhlmann, U. Kupper, J. Brimmers, T. Bergs Analysis of friction of bowl-shaped surface structures resulting from alternative gear manufacturing processes S. 1371-1382

„… = 0,145 m/sTwo Stepsof TestingIncrease ofTurning SpeedHysteresis(Running-In)Disk-on-Disk Test …” „… test rig as an analogy test is used. The advantages compared to gear testing are the defined contact …” „… change of the surface roughness during testing. Because of the different influence on the surface caused …”

G. Hlebanja, M. Hriberšek, M. Erjavec, S. Kulovec Influence of the tooth flank shape on wear for a steel-POM gar pair S. 1295-1304

„… of a mating steel/POM gear pair. Testing conditions, gear geometry, and testing arrangement are …” „… described. POM gears were inspected during testing and wear was measured. So, wear development along the …” „… . Arithmetic mean deviation Ra resulted in app. 0.5 µm for both metal gears and Rz up to 3.0 µm. 3. Testing …”

K. Stahl, T. Tobie, C. M. Illenberger Standardized methods of load capacity calculation of plastic gears S. 1173-1180

„… to adopt reliable testing and calculation methods. This paper gives a brief overview of the …” „… research there is still a lack of knowledge in stand-ardized testing and calculation methods. The complex …” „… testing and evaluation method for strength value generation exists. Therefore, a standard de-velopment …”

A. Pogačnik, U. Kissling The future of plastic gear standardization S. 1149-1160

„… plastic gears in prototype testing. The research and development in the field of plastic gears has …” „… testing. But this is not the case. On the other hand, when using the mentioned modified equation taking …” „… Nr. 2389, 20221152There are numerous testing facilities (Erlangen, Ljubljana, Munich, Padova …”

A. Turich Gear hard finishing with up to 100% in-process inspection S. 1583-0

„… double flank roll testing and laser scanning, reducing inspection time significantly. In fact, inspection …” „… installed close to the production machine. 2. The Game Changer: In-Process Roll Testing and Laser …” „… double flank roll testing of gears applied in most of today’s high-volume gear production environments in …”

E. Lothman, M. Hein, U. Steiner Increased load carrying capacity of gears through optimized steel performance, surface conditions and processes S. 637-650

„… fatigue testing for three 18CrNiMo7-6 steels with different performance levels. The material investigation …” „… regarding tooth root breakage was also estimated. The steels involved in the testing are all …” „… gear testing. Test rig and test conditions The test runs were performed on a FZG back-to-back gear …”

D. Drummer, D. Schubert, C. Herzog In situ measurement of geometric and structural influences on the operating properties of polymer gears S. 1099-1116

„… . Fundamentals 2.1. Current methods and designs for in situ gear testing Various in situ test methods for gears …” „… other hand, a load spectrum is applied. The test rig automatically switches between a high or “testing …” „… gear is subjected to the testing conditions. The load in the “low” cycles is reduced as far as possible …”

A. Alnahlaui, P. Tenberge Improved method for the determination of tooth root endurance strength S. 31-44

„… targeted testing of gear drives also involves a great amount of effort and uncertainties. Due to economic …” „… considerations, significant compromises have to be made in terms of testing time or number of test specimens. The …” „… . Test rig For testing an electromagnetic high-load resonance pulsator is used. The Fig. 7 shows this …”

L. Bonaiti, F. Rosa, P. Mahendra Rao, C. Gorla, F. Concli Gear root bending strength: statistical treatment of single tooth bending fatigue tests results S. 15-30

„… standardized data as they are not representative of the gears investigated. Therefore, extensive gear testing …” „… life. The available testing methodologies for the tooth root bending fatigue strength are running …” „… STBF test data: 1. The testing and service loading conditions are different. In the real case, the …”

F. Donner, T. Scheu, M. Weigand Dynamic simulation of a rotor system with variable speed S. 985-994

„… the opinions of pilots which are testing the rotorcraft behaviour during simulator flights at TU …” „… transmission ratio. The compound split gearbox and the variator are designed for scaled loads for later testing …” „… Annual Forum Proceedings, Fort Worth, TX, May 2022. 9. Mitchell, A.M., Oswald, F.B., Coe, H.H., “Testing …”

F. Lagier, A. Bischofberger, K. Bause, S. Ott Suitability of additive manufactured PEEK gears as a means of gear sampling for automotive high-speed gearboxes S. 1045-1060

„… improve-ment of 3 dB in comparison to cast iron steel could be observed in the testing of PEEK gears with …” „… single gear geometry. The required flexibility VDI-Berichte Nr. 2389, 20221048for the testing of several …” „… this method for testing in high-speed operating points. VDI-Berichte Nr. 2389, 2022 1049Validation …”

B. van Wissen, M. Kanters, F. Mitsuzuka, K. Iwanaga, M. Meuwissen, A. Hasanovic Predicting static and fatigue performance of fiber reinforced plastic gears S. 1083-1098

„… tests, like standard tensile bar testing (static and fatigue) or also simplified gear test results, into …” „… (most data within a factor 3). Only for the highest temperature and long testing times, the model …” „… , except for high temperatures and long testing times where wear starts playing a role. Future work will …”

N. Sagraloff, T. Tobie, K. Stahl Suitability of the test results of micropitting tests acc to FVA 54/7 for modern practical gear applications S. 469-484

„… determined theoretically and has to be determined by physical testing. A well-established test procedure to …” „… determined theoretically and has to be determined by physical testing under suitable test conditions. The …” „… capacity of gear lubricants has to be determined by physical testing under suitable test conditions. In …”

T. Matsumura, K. Mioki, M. Kada, R. Okuizumi, A. Pogačnik Improved calculation methodology for the prediction of tooth temperature of plastic gears S. 1237-1248

„… efficiency, gear tribological test were conducted on the gear testing ma-chine (Ono Sokki Co., Ltd., Japan …” „… deformation was determined by measuring the rotation of the shaft angle. Fig. 2: Gear testing system for …” „… ., Tavčar J.: Accelerated Testing and Temperature Calculation of Plastic Gears. Gear Solut. 2016, 1 (15 …”

B. Reetz, T. Munch, W. Kappeler Challenges for lead-free brass alloys in worm gears S. 1467-1488

„… shows the mass loss of the two special brass materials (with and without lead) after testing in the gear …” „… conditions after testing in the gear test rig a b Fig. 18: Surface of the teeth flanks after gear …” „… testing, worm wheel made of bars of CuZn37Mn3Al2PbSi (CW713R), overview picture (a) and cross section …”

K. Lubke, M. Stein, S. Lin Validation of evaluation algorithms for cylindrical involute gears on coordinate measuring machines – new challenges according to standardization S. 1529-1538

„… as proposed in [9]. 2. Scope of gear software testing The gear evaluation software will be validated …” „… provides a tool for the validation of computational software applications used in metrology, e.g. testing …” „… . 21274 N) “Software testing for gear algorithms” is funded by the Federal Ministry of Economic Affairs …”

M. Weigand, C. Gachot Improved rotorcraft drivetrain safety and related research with special focus on improved lubricants for rotorcraft transmissions S. 561-572

„… aviation requires experimental proof and testing (see esp. [9], [10]), the research unit operates a …” „… research unit Transmissions for Aviation at TU Wien. TU Wien is testing these new chip detectors on its …”

M. Weigand Smart and intelligent chip detectors using machine learning to monitor wear particles and dangerous degradation of critical powertrain components S. 995-998

„… expertise and a highly specialised testing environment. Technology This technology uses magnetic effects …”

P. Tenberge, J. Vorgerd, L. Gondecki 2-disc tribometer for various tests on sliding/rolling contacts with tribological loads such as in tooth flank contacts S. 145-156

„… tooth meshings of gears (a) VDI-Berichte Nr. 2389, 2022 145State of the art in gear testing and …” „… no drive-motors available which can do this with reasonable effort in a testing machine for about 80 …”

T. Ohno, R. Greschert, J. Brimmers The influence of material roughness, hardness and lubricant additives on micropitting behaviour of gears S. 621-636

„… measurement conditions are shown in Table 2. According to testing standards, test gears do not have a tooth …” „… change. Except for the gear with Ra = 0.8 μm in which testing was stopped because of pitting, the number …”

P. Mahendra Rao, S. Foletti, L. Bonaiti, C. Gorla, S. Beretta, F. Concli Mode III threshold under rolling contact fatigue and development of a test gearbox for planet gears S. 499-510

„… design and development of a test gearbox for the full-scale testing of such a 3-gear train planet gears …” „… the testing of two gears. Here the core RCF test will itself get performed due to the design of the …”

Titelei/Inhaltsverzeichnis

„… mm f Gear strength testingIn situ measurement of geometric and structural influences on the operating …” „… . ChinaPreflight Lx3 am August 23, 2022 | 08:38:21 | 148 mm x 210 mm f Enhanced testing methodsSuitability of the …” „… , Garching, GermanyTest rig concept for high power VHCF gear testing …”

S. A. Bohme, J. Keski-Rahkonen, T. Komssi A standardizable approach to tooth flank fracture S. 371-388

„… back-to-back gear testing [3] and the observations from early-stage tooth flankfracture on large maritime bevel …” „… link theoryrelies on the measured relative standard deviation during fatigue testing (srel = 4% for the …” „… carburised CrNiMo steel: Testing and modelling concept”. In: Fatigue& Fracture of Engineering Materials …”

B. H. Kien, D. Iba, Y. Tsutsui, Y. Lei, D. Taga, N. Miura, T. Iizuka, A. Masuda, I. Moriwaki Plastic gear remaining useful life prediction using artificial neural network S. 951-956

„… used to generate the HI of the testing plastic gear. The generated HI is suitable to monitor plastic …”

A. Sitzmann, T. Tobie, K. Stahl, S. Hoja, S. Schurer Deep nitriding – contact and bending strength of gears with increased nitriding hardening depth S. 875-890

„… determine the hardness depth profile on the cross-section of each variant. The testing points were set …” „… hardness testing in the tooth flank and root areas are summarized redundant for all three investigated deep …” „… compound layer, an instrumented penetration test acc. to DIN EN ISO 14577 [12] with a testing force in the …”

D. Sackmann, T. Husemann, B. Karpuschewski The effect of a multi-stage grinding process on the barkhausen noise signal S. 695-706

„… , an appropriate inspection is usually done in industrial environments. One method of testing with a …” „… , E.; Schneider, E.; Theiner, W.; Tönshoff, H. K.: Nondestructive Testing for Evaluating Surface …”

C. M. Illenberger, T. Tobie, K. Stahl Operating behavior and performance of oil-lubricated plastic gears S. 1117-1132

„… after the end of testing. Due to the higher roughness and the resulting low specific lubricant film …” „… back-to-back and pulsator testing. International Conference on Gears 2015 (2015). [8] Illenberger, C. M.; Tobie …”

A. Gebhard, W. Kassem, M. Oehler Cylinder-on-ring model wear tests as an input data source for the simulation of friction and wear of plastic gears S. 1133-1148

„… performed. However, due to the short testing times, the semi-automatic scanning of large portions of the …” „… ., Van Wissen, B., and Nickel, R.: Relevant tribological testing method for high performance plastic …”

W. Kassem, M. Oehler, B. Sauer, S. Schmidt, J. Hausmann Investigation of the time-dependent behavior of plastic gears with local tribological simulation S. 1281-1294

„… testing to determine the gear losses as well as the load carrying capacity of plastic gears paired with …” „… ) Accelerated lifetime testing of reinforced polymer gears. Journal of Advanced Mechanical Design, Systems, and …”

B. James Developing a digital thread linking gear design to manufacturing simulation and metrology S. 185-196

„… and testing of an innovative non-rare earth permanent magnet motor for which Hexagon has patents, and …”

U. Kissling Generation of a torque spectrum from measured torque-speed-time data S. 533-544

„… drive system, preferably accompanied by experimental testing to validate the calculation. In the …”

A. Baumann, B. Bertsche Coefficient of friction behavior of gear oils and significance for the meshing process of spur gears S. 745-762

„… . 177–188. [7] Costello, M. T.: Effects of basestock and additive chemistry on traction testing. In …” „… tribo-corrosion testing and analysis of metallic biomaterials. In: Niinomi, M. (Ed.): Metals for Biomedical …”

I. Moriwaki, K. Tatsuoka, K. Kobayashi, W. Nakamoto, D. Iba, A. Ueda Load-capacity evaluation of polyacetal (POM) internal gears according to JIS B 1759:2016 S. 1161-1172

„… Rig-based Testing of Flank Load-Carrying Capacity Internal Gears, GEARTECHNOLOGY, June/July 2012, pp.60-69 …”

P. Rodel, R. Spieler, M. Indenbirken, T. Nuisl Holistic friction optimization of transmissions – a significant contribution for sustainability S. 731-744

„… component testing results. As contact mechanic simulation is not needed, the calculation is very time …”

S. Oberle, V. Labriola, E. Melnikov, G. Gariglio High performance plastic gear solution in the engine environment S. 1033-1044

„… testing the gears it is important to detect every possible failure mode that the gear could have …”

S. Sklenak, J. Brimmers, C. Brecher Analysis of local wear within the dry lubricated rolling- sliding contact of coated surfaces S. 305-316

„… approach Testing Method The primary challenges in the experimental investigation of tooth flank contact …”

S. Matkovič, M. Kalin Effect of tribological properties on tooth root fatigue failure of polymer gears S. 1257-1268

„… ] that during polymer gear fatigue life testing, the VDI-Berichte Nr. 2389, 20221258temperature should be …”

P. Roth, M. Hein, K. Stahl Scuffing load capacity calculation of worm gears S. 811-824

„… ., Frankfurt/Main. [30] DIN 51354-2:1990-04 (1990) Testing of lubricants - FZG gear test rig - method A/8,3/90 for …”

P. Barreiro, S. Pfrimmer, G. Armutcu, J. Hermes Quality improvement of an aluminum gearbox housing by implementing additive manufacturing S. 1429-1446

„… of the die, its machining, installation in the mold, and final testing. Since the die was designed …”

A. Wedmann, M. Stein, K. Kniel Gear calibration in tactile scanning mode on CMMs S. 1539-1552

„… 2612-1, 2018: Measurement and testing of gears - Evaluation of profile and helix measurements on …”

H.-J. Dennig, L. Zumofen, A. Kirchheim, S. Winterberg, D. Stierli Increasing the safety against scuffing of additive manufactured gear wheels by internal cooling channels S. 1345-1364

„… gearsDimensionTestingFunctionalintegrationCooling strategyVDI-Berichte Nr. 2389, 2022 1347and simple production, easily controllable heat treatment …”

B. Legrady, M. Taesch, G. Tschirschnitz, C. F. Mieth Prediction of churning losses in an industrial gear box with spiral bevel gears using the smoothed particle hydrodynamic method S. 651-664

„… direction and filling height in reduced systems accordingly builds trust in secure A-B testing. This fact …”

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