Determination of interfacial adhesion energies of thermal barrier coatings by compression test combined with a cohesive zone finite element model
作者单位：Key Laboratory of Low Dimensional Materials & Application TechnologyXiangtan UniversityMinistry of Education Faculty of MaterialsOptoelectronics and PhysicsXiangtan University School of Mechanical EngineeringXiangtan University Department of Mechanical EngineeringCurtin University
会议名称：《第十三届全国物理力学学术会议》
会议日期：2014年
学科分类：08[工学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）]
关 键 词：interfacial adhesion energy thermal barrier coatings compression tests edge delamination cohesive zone model
摘 要：Determination of interfacial adhesion energies of thermal barrier coatings(TBCs)is very important for understanding the failure mechanism and predicting the life of *** the compression test with cohesive zone finite element method,the interfacial adhesion energy is *** is found that the critical interfacial adhesion energy is 120 J/m2 and the corresponding loading phase angle is–*** the increases of half-length of crack,the crack propagation tends to steady-state,and the steady-state interface energy release rate reaches 150 J/m2,edge delamination experiences almost pure mode *** results are good agreement with the FEM simulation results and the values available in the literatures determined by different test methods,which confirms validity of the method used in this study.