Paper Title:

Numerical Analysis on Surface Fractures in Two-Layered Materials Subjected to Thermal Loading

Periodical Key Engineering Materials (Volumes 353 - 358)
Main Theme Progresses in Fracture and Strength of Materials and Structures
Edited by Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages 913-916
DOI 10.4028/www.scientific.net/KEM.353-358.913
Citation Lian Chong Li et al., 2007, Key Engineering Materials, 353-358, 913
Online since September, 2007
Authors Lian Chong Li, Chun An Tang, Jun Xing, Zheng Zhao Liang, Wei Jiang, Tian Hong Yang, Xing Dong Zhao
Keywords Damage, Failure Process, Heterogeneity, Numerical Simulation, Thermal Barrier Coating (TBC)
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Abstract

With the knowledge of heterogeneous characteristics of thermal barrier coating materials at mesoscopic level, a coupled thermo-mechanical-damage (TMD Model) model was introduced and used to numerically quantify the thermal stresses and crack development of in thermal barrier coatings (TBCs) composite subjected to decreased temperatures. The effect of different surface precrack morphologies, such as precrack length and precrack density, on an interface crack subjected to thermal loading caused by a temperature change is presented. It provides us with a more sensible physical intuition and a more accurate mathematical for optimizing the design and the processing of ceramic coatings subjected to the coupled thermal-mechanical loading.