Optimizing functionally graded nickel-zirconia coating profiles for thermal stress relaxation

被引：21

作者：

Joshi, Sunil C. ^{[1
]}

Ng, H. W. ^{[2
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Div Aerosp Engn, Singapore 639798, Singapore

[2] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Div Engn Mech, Singapore 639798, Singapore

来源：

SIMULATION MODELLING PRACTICE AND THEORY | 2011年 / 19卷 / 01期

关键词：

Finite element analysis; Power law; Optimization; Functionally graded coating; Thermal stress; BARRIER COATINGS;

D O I：

10.1016/j.simpat.2010.08.013

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The investigations on optimization of composite composition of nickel-zirconia for the functionally graded layered thermal barrier coating for the lowest but uniform stress field under thermal loading is presented The procedure for obtaining temperature- and composition-dependent thermal and mechanical properties of various coating compositions is discussed These material parameters were used in thermo-mechanical finite element stress analyses of a nickel substrate with the coating The results showed that the Von-Mises stresses in the substrate and the interfaces were the lowest with the coating profile that followed a concave power law relationship with the index n approximate to 2 65 (C) 2010 Elsevier B V All rights reserved

引用

页码：586 / 598

页数：13

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