A microplasticity evaluation method in very high cycle fatigue

被引：34
|
作者：
Wang, X. G. [1 ]
Feng, E. S. [1 ]
Jiang, C. [1 ]
机构：
[1] Hunan Univ, Coll Mech & Vehicle Engn, State Key Lab Adv Design & Mfg Vehicle Body, Changsha 410082, Hunan, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2017年 / 94卷
基金：
美国国家科学基金会;
关键词：
Microplasticity; Very high cycle fatigue; Ultrasonic fatigue; Infrared thermography; Energy dissipation; SUBSURFACE CRACK INITIATION; THERMOGRAPHIC METHODOLOGY; RAPID-DETERMINATION; ULTRASONIC FATIGUE; LIFE; STEEL; MECHANISMS; SURFACE; TEMPERATURE; EVOLUTION;
D O I：
10.1016/j.ijfatigue.2016.09.004
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This paper is concerned with an application of full-field calorimetric method for the Microplasticity evaluation in the very high cycle fatigue regime. The employed method is essentially based on the establishment of an experimental energy balance during the fatigue process. It allows the estimation of the plastic strain of very low magnitude produced by cyclic slip, which is considered as the primary mechanism of the ultrahigh cycle fatigue in the face-centered cubic materials. By the developed method, the plastic strain amplitudes of a polycrystalline copper in the very high cycle fatigue regime are estimated, and its relationship with the fatigue lives is established via the Manson-Coffin law. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：6 / 15
页数：10
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