|
|||||
|
|
Digital image correlation approach to cracking and decohesion in a brittle coating/ductile substrate system |
|
| Authors: | D.J. WuW.G. Mao Y.C. ZhouC. Lu |
| Affiliation: | a Key Laboratory of Low Dimensional Materials and Application Technology, Ministry of Education, Xiangtan University, Xiangtan, Hunan 411105, China b Aeronautical Science and Technology Key Laboratory of Aeronautical Test and Evaluation, Nanchang Hangkong University, Jiangxi 330063, China c Department of Mechanical Engineering, Curtin University, Western Australia 6845, Australia |
| Abstract: | By using a digital image correlation technique, the full/local field strain in a brittle coating/ductile substrate system during tension has been successfully monitored. One of the most important experimental results indicates that the distribution of interfacial shear stress in the segmented coating is antisymmetric about the center, which clarifies several controversial assumptions introduced in theoretical models. Two key mechanical properties of thermal barrier coatings, fracture strength in coating and interfacial adhesion strength, were determined as 35.0 ± 4.6 and 14.1 ± 3.2 MPa, respectively, which are consistent with available experimental data. |
| Keywords: | Digital image correlation Tensile fracture strength Interfacial shear strength Thermal barrier coating |
| 本文献已被 ScienceDirect 等数据库收录！ | |