文献类型：期刊文献

英文题名：A small cantilever beam test for determination of creep properties of materials

作者：Zhuang, F. K.[1];Tu, S. T.[1];Zhou, G. Y.[1];Wang, Q. Q.[1]

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety MOE, Shanghai 200237, Peoples R China

年份：2015

卷号：38

期号：3

起止页码：257

外文期刊名：FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES

收录：;EI(收录号：20150500479339);WOS:【SCI-EXPANDED(收录号:WOS:000349105300002)】；

基金：National Natural Science Foundation of China (no. 50835003) and the Fundamental Research Funds for the Central Universities (no. WG1214022) are gratefully acknowledged for their financial supports.

语种：英文

外文关键词：creep properties; cantilever beam specimen; small specimen test; finite element method

摘要：The application of small specimen creep test techniques in the evaluation of creep properties of materials in-service has been increasing. To obtain the creep data accurately and conveniently, a new creep test method with small cantilever beam specimens is proposed. Analytical equations are derived that can convert the load to equivalent uniaxial stress and the displacement rate to equivalent uniaxial strain rate. Three types of the cantilever beam specimens are designed. The optimal configuration of the cantilever beam specimens is recommended with the aid of finite element method, which is further validated by the cantilever beam and uniaxial specimen tests. The results show that parameters obtained from the cantilever beam tests correspond reasonably well with those from uniaxial tests at low stress levels. With a relatively large equivalent gauge length, the cantilever beam specimen allows the small creep strain rate data obtained with a high accuracy.