A multilayer structure shear lag model applied in the tensile fracture characteristics of supersonic plasma sprayed thermal barrier coating systems based on digital image correlation
A multilayer structure shear lag model applied in the tensile fracture characteristics of supersonic plasma sprayed thermal barrier coating systems based on digital image correlation
复制标题
基于数字图像相关的多层结构剪力滞模型应用于超音速等离子喷涂热障涂层系统拉伸断裂特性
DOI：
10.1016/j.surfcoat.2018.07.013
复制
发表时间：
2018-09
影响因子：
5.4
通讯作者：
D. N. Fang
中科院分区：
文献类型：
--
作者：
W. G. Mao;Y. Y. Chen;Y. J. Wang;M. Zhou;H. Y. Yang;Z. Wang;C. Y. Dai;X. Chen;D. N. Fang
建立了一个用于分析超音速等离子喷涂8wt%氧化钇稳定氧化锆热障涂层（TBC）拉伸断裂行为的多层结构剪切滞后模型。采用剪滞模型，推导了平面应力和剪应力的解析解。采用非接触式数字图像相关（DIC）测量系统对热障涂层拉伸过程中的动态应变场、裂纹形核与扩展特征进行了原位监测。利用上述解析解，对热障涂层中平面应力和剪应力的演化进行了估算。利用DIC原位测试结果，进一步获得了热障涂层的断裂强度、界面剪切强度、断裂能和断裂韧性，总结了热障涂层的整体拉伸断裂机制。该剪切滞后模型与DIC的帮助下，是有用的其他新型多层结构的脆性涂层/韧性基板系统的力学性能的测量。
We developed a multilayer structure shear lag model used in analyzing tensile fracture behavior of supersonic plasma sprayed 8 wt% yttria-stabilized zirconia thermal barrier coatings (TBCs). The closed-form solutions of plane and shear stresses were deduced by using the shear lag model. Dynamic strain fields, cracking nucleation and propagation features of TBCs during tensions were in-situ monitored by non-contact digital image correlation (DIC) measurement system. The evolutions of plane and shear stresses in TBCs were estimated by the above closed-form solutions. Using in-situ measurement results of DIC, we further obtained the fracture strengths, interface shear strengths, fracture energy and fracture toughness of TBCs, and summarized the whole tensile fracture mechanisms of TBCs. This shear lag model with the aid of DIC is useful for measuring the mechanical properties of other novel multiple-layer structure brittle coating/ductile substrate systems.
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影响因子：
3.2
作者：
C. Hsueh
通讯作者：
C. Hsueh
DOI：
10.1016/0001-6160(89)90120-x
发表时间：
1989-04-01
期刊：
ACTA METALLURGICA
影响因子：
--
作者：
AGRAWAL, DC;RAJ, R
通讯作者：
RAJ, R
影响因子：
5.4
作者：
Ahmed, Furqan;Durst, Karsten;Goeken, Mathias
通讯作者：
Goeken, Mathias
影响因子：
5.4
作者：
Chen, BF;Hwang, J;Huang, JH
通讯作者：
Huang, JH
DOI：
10.1364/josa.11.000233
发表时间：
1925-09-01
影响因子：
--
作者：
Timoshenko, S
通讯作者：
Timoshenko, S