Coupled Experimental and Analytical Investigations of Creep Crack Growth in Metallic Materials

本研究将应用高温云纹干涉法和高温数字图像相关技术，获得高温蠕变载荷作用下裂纹尖端附近的应变场和位移场。这项工作将包括损伤萌生和扩展的微观结构检查，以更好地理解物理，同时提出近尖端应力-应变场的解析和数值解。最终目的是开发预测材料和结构中蠕变损伤的改进方法。

The research will apply high temperature Moire interferometry and high temperature digital image correlation to obtain strain and displacement fields in the vicinity of crack tips under high temperature creep loading. THe work will include microstructural examination of damage initiation and growth to develop a better understanding of the physics, at the same time advancing analytical and numerical solutions for the near tip stress-strain fields. The ultimate aim is to develop improved methods for prediction of creep damage in materials and structures.//