Estimation of residual stresses in SiC/Ti-15-3 composites and their relaxation during a fatigue test

被引：16

作者：

Bobet, JL ^{[1
]}

Masuda, C ^{[1
]}

Kagawa, Y ^{[1
]}

机构：

[1] UNIV TOKYO,INST IND SCI,MINATO KU,TOKYO 106,JAPAN

来源：

JOURNAL OF MATERIALS SCIENCE | 1997年 / 32卷 / 23期

基金：

日本科学技术振兴机构;

关键词：

D O I：

10.1023/A:1018665901020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Residual stresses induced by cooling down from the elaboration process in SiC/Ti-15-3 composite were calculated by the finite element model using MARC and MENTAT software. An analytical model (derived from those of Eshelby and of Mikata and Taya) already used for ceramic matrix composites has also been used in this study for elementary composites. The influence of uncertainty on thermomechanical properties and also the influence of fibre packing and spacing were also studied. Then, evolution (relaxation) of the thermal residual stresses (TRS) during a fatigue test were investigated. Results show that the TRS decreased rapidly during the first cycles and then became almost constant at about one-third of their initial values.

引用

页码：6357 / 6369

页数：13

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