Analytical and Experimental Study on the Mechanical Strength Evaluation of Advanced Devices

我们开发了几个计算机程序和一种实验技术来评估先进设备的机械强度。本课题开发的计算机程序包括各向异性双材料界面断裂力学评价程序、包含位错密度等材料微观信息的位错本构方程评价程序和大尺度问题的分子动力学程序。作为一种实验技术，我们开发了利用光学显微镜或扫描激光显微镜拍摄的图像测量小区域应变分布的系统。我们使用本研究项目中开发的分析和实验技术对电子设备进行了机械强度研究。

We developed several computer programs and an experimental technique for mechanical strength evaluation of advanced devices. The computer programs developed in the present research project are a program for fracture mechanics evaluation of interface between anisotropic bimaterial, a program for dislocation evaluation using a constitutive equation including microscopic information of materials such as dislocation density, and a molecular dynamics program for large scale problems. As an experimental technique, we developed systems for measuring strain distribution of small region with the use of images taken by an optical microscope or a scanning laser microscope. We performed mechanical strength studies for electronic devices using the analytical and experimental techniques developed in the present research project.