Fatigue Crack Growth Law Covering Threshold and Fracture Toughness for Railway LZ50 Axle Steel

被引：1
作者：
Zhao, Y. X. [1 ]
机构：
[1] Southwest Jiaotong Univ, Inst Engn Reliabil & Safety, Tract Power State Key Lab, Chengdu 610031, Peoples R China
来源：
ADVANCES IN PRODUCT DEVELOPMENT AND RELIABILITY III | 2012年 / 544卷
关键词：
Railway; Axle; Fatigue crack growth rate; Modeling;
D O I：
10.4028/www.scientific.net/AMR.544.280
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Long fatigue crack growth rate (FCGR) model covering the range from threshold to fracture toughness is investigated through a series of experiments on the fatigue crack growth behaviour during nearby the threshold district of stage I, steady growth stage II, and the toughness of railway LZ50 axle steel. It reveals that test data in stage 11 can be reasonably described by employing a statistical distribution for the FCGR data at a given stress intensity factor range level. While the test data nearby the threshold district can be appropriately characterized using a statistical distribution for the factor range data at a given FCGR level and the case is similarly for the test toughness data. Therefore, the model is constructed using the test data in stage IT under a control of the statistical parameters of threshold and toughness data on a principle of concurrent probabilities. Availability is indicated by the modeled result for the present material.
引用
收藏
页码：280 / 285
页数：6
相关论文
共 17 条
[1]  
ASTM Committee E08 on Fatigue and Fracture, 2000, E647 ASTM INT
[2]  
ASTM Committee E08 on Fatigue and Fracture, 2005, E399 ASTM INT
[3]   The influence of the K gradient and K-max(c) level on fatigue response during the k(max)(c) threshold testing of Van 80 steel and Astroloy [J].
Clark, TR ;
Herman, WA ;
Hertzberg, RW ;
Jaccard, R .
INTERNATIONAL JOURNAL OF FATIGUE, 1997, 19 (02) :177-182
[4]  
Elber W., 1971, Damage tolerance in aircraft structures, P230, DOI DOI 10.1520/STP486-EB
[5]   NUMERICAL ANALYSIS OF CRACK PROPAGATION IN CYCLIC-LOADED STRUCTURES [J].
FORMAN, RG ;
KEARNEY, VE ;
ENGLE, RM .
JOURNAL OF BASIC ENGINEERING, 1967, 89 (03) :459-&
[6]  
International Standard Organization, 2002, ISO121082002 BRIT ST
[7]  
Lawson L, 1999, INT J FATIGUE, V21, pS15
[8]  
Paris P, 1963, J. Fluids Eng, V85, P528, DOI [DOI 10.1115/1.3656900, 10.1115/1.3656900]
[9]  
WALKER K., 1970, EFFECTS ENV COMPLEX, P1, DOI DOI 10.1520/STP32032S
[10]  
[杨冰 Yang Bing], 2005, [工程力学, Engineering Mechanics], V22, P99
12