TY - JOUR
T1 - Modeling of micro-crack growth during thermal shock based on microstructural images of thermal barrier coatings
AU - Wei, Shen
AU - Qun-bo, Fan
AU - Fu-chi, Wang
AU - Zhuang, Ma
PY - 2009/9
Y1 - 2009/9
N2 - Based on digital image processing theory and finite element mesh generation principle, a methodology is proposed to model the micro-crack growth of thermal barrier coatings (TBCs) during thermal shock with the aid of finite element program. Firstly, a microstructural image of plasma sprayed TBCs is transferred to digital image; secondly, a finite element grid model is generated by thresholding segmentation according to the actual microstructure; finally, based on the finite element grid model, the Tuler-Butcher failure criterion is employed to model the micro-crack growth of TBCs during thermal shock. The numerical simulation result agrees well with the experimental result, and the methodology presented in this paper is found to be effective to model the micro-crack growth.
AB - Based on digital image processing theory and finite element mesh generation principle, a methodology is proposed to model the micro-crack growth of thermal barrier coatings (TBCs) during thermal shock with the aid of finite element program. Firstly, a microstructural image of plasma sprayed TBCs is transferred to digital image; secondly, a finite element grid model is generated by thresholding segmentation according to the actual microstructure; finally, based on the finite element grid model, the Tuler-Butcher failure criterion is employed to model the micro-crack growth of TBCs during thermal shock. The numerical simulation result agrees well with the experimental result, and the methodology presented in this paper is found to be effective to model the micro-crack growth.
KW - Digital image processing
KW - Finite element grid model
KW - Micro-crack growth
KW - Microstructural image of TBCs
KW - Thermal shock
UR - http://www.scopus.com/inward/record.url?scp=69249209918&partnerID=8YFLogxK
U2 - 10.1016/j.commatsci.2009.03.039
DO - 10.1016/j.commatsci.2009.03.039
M3 - Article
AN - SCOPUS:69249209918
SN - 0927-0256
VL - 46
SP - 600
EP - 602
JO - Computational Materials Science
JF - Computational Materials Science
IS - 3
ER -