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用云纹干涉法测定了FGM试件和双材料试件在温度载荷作用下的变形位移场 ,给出了温度应力沿界面层上的分布曲线 ,讨论了梯度界面对温度应力特别是对界面层端部区域应力集中的影响 .实验结果表明 :与双材料试件相比 ,FGM试件中的梯度层有效地缓释了界面端部区域的应力集中 ,改善了界面应力的分布 ,减缓了界面区域的变形与应变并还将实验结果与有限元数值计数结果进行了比较
The deformation and displacement fields of FGM and bimaterial specimens under temperature loading were measured by moire interferometry. The distribution curves of temperature stress along the interface layer were given. The effects of gradient interface on thermal stress, especially on the interface layer The results show that compared with the bimaterials, the gradient layer in the FGM specimen effectively relieves the stress concentration in the end region of the interface, improves the distribution of the interface stress and slows down the interface Regional deformation and strain and also compare the experimental results with the numerical results of finite element numerical