In order to evaluate the surface durability of surface-hardened sintered gears, the fatigue lives of 5 kinds of sintered gears and 28 kinds of sintered rollers under sliding-rolling contact conditions were examined and estimated based on the fracture mechanics. The sintered gears and rollers were surface-hardened by induction-hardening and ion-nitriding. The fatigue tests were conducted using a power circulating gear testing machine and two cylinder testing machines. The pore distributions included in the sintered materials were observed and were analyzed statistically. The failure mode of the sintered gears and roller was mainly spalling. The stress intensity factor obtained by FEM analysis for the mode II under a condition of Hertzian contact became larger as the crack length became longer. The estimation of fatigue life of the sintered gears and rollers was attempted using the pore distributions and the fracture mechanics. The estimated fatigue lives were almost the same as the tested fatigue ones. Therefore, it could be said that the crack propagation of the sintered gears and rollers depended on the pore size and hardness.
Skip Nav Destination
ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
September 2–6, 2003
Chicago, Illinois, USA
Conference Sponsors:
- Design Engineering Division and Computers and Information in Engineering Division
ISBN:
0-7918-3702-5
PROCEEDINGS PAPER
Spalling Fatigue Life Assessment of Surface Hardened Sintered Gears Based on Fracture Mechanics Available to Purchase
Akira Yoshida,
Akira Yoshida
Okayama University, Okayama, Japan
Search for other works by this author on:
Masanori Seki
Masanori Seki
Okayama University, Okayama, Japan
Search for other works by this author on:
Yuji Ohue
Kagawa University, Takamatsu, Japan
Akira Yoshida
Okayama University, Okayama, Japan
Masanori Seki
Okayama University, Okayama, Japan
Paper No:
DETC2003/PTG-48003, pp. 25-30; 6 pages
Published Online:
June 23, 2008
Citation
Ohue, Y, Yoshida, A, & Seki, M. "Spalling Fatigue Life Assessment of Surface Hardened Sintered Gears Based on Fracture Mechanics." Proceedings of the ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 4: 9th International Power Transmission and Gearing Conference, Parts A and B. Chicago, Illinois, USA. September 2–6, 2003. pp. 25-30. ASME. https://doi.org/10.1115/DETC2003/PTG-48003
Download citation file:
13
Views
Related Proceedings Papers
Related Articles
Surface Failure and Durability of Induction-Hardened Sintered Powder Metal Rollers and Gears with Various Hardened Depths
J. Mech. Des (September,1994)
Size Effect in Bending Strength of Carburized Gear Teeth
J. Mech. Des (December,1993)
Effect of Rim Thickness on Gear Crack Propagation Path
J. Mech. Des (March,1997)
Related Chapters
Recent Developments in J Ic Testing
Developments in Fracture Mechanics Test Methods Standardization
Quantitative Analysis of Fatigue Process—Microcracks and Slip Lines Under Cyclic Strains
Fatigue Mechanisms
A Fracture Mechanics Method for an Advanced Evaluation of Inclusions and the Prediction of Fatigue Life of Rolling Element Bearings
Bearing and Transmission Steels Technology