An analysis of thermal gradient impact in thermal-mechanical fatigue testing

被引：9
|
作者：
Maurel, V. [1 ]
Koster, A. [1 ]
Remy, L. [1 ]
机构：
[1] CNRS, UMR 7633, Ctr Mat, F-91003 Evry, France
来源：
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2010年 / 33卷 / 08期
关键词：
energy criterion; ferritic stainless steel; geometric instabilities; testing methods; thermal gradient; thermo-mechanical fatigue; TEMPERATURE; DAMAGE; LIFE;
D O I：
10.1111/j.1460-2695.2010.01449.x
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Thermal-mechanical fatigue (TMF) testing is a good method to decrease the number of isothermal tests for non-isothermal behaviour laws identification. Based on experimental results of the TMF Standard European Working Group, this study aims to investigate the impact of thermal gradients on mechanical heterogeneity within the gage length specimen. The quality of the TMF test is examined by an energy criterion related to error bounds for nonlinear behaviour. A sensitivity analysis is then made for a given behaviour law identified on a TMF test to answer to the above question. Moreover the geometric instability phenomenon, already noticed by Sheffler and Coffin, is modelled herein.
引用
收藏
页码：473 / 489
页数：17
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