Paper Title:
Aging of High Speed Train Wheelsets and its Quantitative Characteristics Based on Fracture Mechanics for Optimization of In-Service Inspection
  Abstract

The fracture mechanics characteristics in the critical locations of the wheelset for high-speed train have not been studied enough yet despite of severe conditions due to increase in operating speeds. Moreover, the fracture mechanics characteristics with respect to the aging effects of wheelset materials have not been clearly studied. In the present study, the following fracture mechanics characterization tests were carried out in accordance with various locations on the wheelset for high-speed train: fracture toughness depending on load rate, fatigue crack growth rate and fatigue thresholds. The results show that the fatigue crack growth rates in accordance to the locations on wheelset were not remarkably different, and the fatigue threshold in the region of the bolt-hole is lower than that in other regions. The fracture toughness depending on load rate data shows that once the downward curve from quasi-static values was reached, subsequent values showed a slow increase with respect to the impact velocity. This means that dynamic fracture toughness should be considered in the design code of the wheelset material.

  Info
Periodical
Key Engineering Materials (Volumes 261-263)
Edited by
Kikuo Kishimoto, Masanori Kikuchi, Tetsuo Shoji and Masumi Saka
Pages
1037-1042
DOI
10.4028/www.scientific.net/KEM.261-263.1037
Citation
S. J. Kwon, K. Ogawa, T. Shoji, "Aging of High Speed Train Wheelsets and its Quantitative Characteristics Based on Fracture Mechanics for Optimization of In-Service Inspection", Key Engineering Materials, Vols. 261-263, pp. 1037-1042, 2004
Online since
April 2004
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Xi Lu, Ning Zhu
Abstract:This document investigated the changes of the surface hardness of the front axle and transmission gear after strengthening under...
518
Authors: Zhong Guo Huang, Hong Lei Dong, Qing Hua Yuan, Jian Song, Jia Fan
Abstract:In order to find out the effects of tempering process on properties of axle steel, the thesis analyzes the change trend of properties of...
4491
Authors: Cai Yun Wang, Peng Shen, Wen Zhong, Qi Yue Liu
Abstract:The rolling contact wear is a severe problem and meets with much widespread interest in the world. This paper describes an numerical method...
697
Authors: Ping Yu Zhou, Ping Bo Wu
Chapter 4: Mechanical Reliability Theory and Engineering
Abstract:In the paper, Assessment and comparison analyses of fatigue strength for different axles of CRH2, CRH3 and CRH5 EMUs are conducted by...
965
Authors: R. Oyyaravelu, K. Annamalai, M. Senthil Kumar, C.D. Naiju, Joel Michael
Chapter 23: Mechanical and Electronic Engineering Control
Abstract:Fatigue failure has become a major concern in the automobile and aircraft industry, heavy machinery etc. Failures by fatigue are especially...
1808