A stochastic model for evolution of creep damage in engineering materials

被引：8

作者：

Roy, N. ^{[1
]}

Ghosh, R. N. ^{[2
]}

Bose, S. C. ^{[2
]}

机构：

[1] Natl Met Lab, Math Modeling & Simulat Div, Jamshedpur 831007, Bihar, India

[2] Natl Met Lab, Mat Sci & Technol Div, Jamshedpur 831007, Bihar, India

来源：

TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2010年 / 63卷 / 2-3期

关键词：

creep; damage; stochastic modeling; Markov process;

D O I：

10.1007/s12666-010-0101-2

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In this work a stochastic model for the creep damage evolution and associated scatter has been developed in terms of a discontinuous Markov process. The magnitude of damage has been described in the form of a probability distribution function whose evolution in time characterizes the nondeterministic nature of the damage accumulation process. The model is able to describe the state of damage along with the associated scatter at a given time at any stress level. The validity of the model has been established by comparing the predicted creep curves generated for a specific loading condition with those experimentally obtained for an austenitic stainless steel (Type 316, 18Cr 8 Ni 2Mo).

引用

页码：665 / 669

页数：5

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