个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:力学与航空航天学院
电子邮箱:xlguo@dlut.edu.cn
A new application of the infrared thermography for fatigue evaluation and damage assessment
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论文类型:期刊论文
发表时间:2012-11-01
发表刊物:INTERNATIONAL JOURNAL OF FATIGUE
收录刊物:SCIE、EI、Scopus
卷号:44
页面范围:1-7
ISSN号:0142-1123
关键字:Fatigue behavior; Damage assessment; Infrared thermography; Energetic damage model
摘要:A new method, based on the infrared thermography, was proposed and applied to rapidly determine the fatigue behavior of Q235 steel. The temperature evolution due to localized microplasticity was considered as the fatigue damage indicator, and good predictions were confirmed between the predicted values and the traditional values. The temperature patterns of the hot-spot zone on the specimen surface were tightly linked with the physical evolution of the fatigue damage in order to identify the damage status for safety evaluation. Based on the limiting energy theory, an energetic damage model was established to predict the residual fatigue life. (C) 2012 Elsevier Ltd. All rights reserved.