微结构三维残余应力拉曼测量理论与技术及其应用

项目名称： 微结构三维残余应力拉曼测量理论与技术及其应用

项目编号： No.11302149

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 李秋

作者单位： 天津职业技术师范大学

项目金额： 30万元

中文摘要： 微拉曼光谱技术具有对材料本征与非本征应力精细测量的特点，是一种具有发展潜力的微尺度实验力学测试新技术。然而，目前该方法对于应力状态及其空间分布的定量分析，在测量基础理论和应用技术方面尚需着力解决"复杂应力状态的张量分辨测量理论"和"三维空间分辨测量技术"两个关键性科学问题。本项目拟在国家自然科学基金的支持下，面向工程微结构工艺残余应力分布及其变化的精细表征，发展三维拉曼残余应力测量理论与技术。通过构建较为完备的张量分辨三维拉曼残余应力测量理论，发展可实现深度分辨的拉曼应力分析方法，进而建立三维空间解析的拉曼残余应力测量技术，并最终实现微结构/微区域任意应力状态的三维梯度残余应力场及其工艺时序演化的在线精细测量与分析。

中文关键词： 拉曼光谱；张量分辨测量理论；欧拉角测量；偏振控制装置；多尺度力学行为

英文摘要： Micro-Raman spectroscopy, which is sensitive to both the intrinsic and the extrinsic stresses of the materials, is one of the most potential methods of the micro-scale experimental mechanics. For the quantitative analysis of stress state and its space distribution, however, this method still has two key scientific problems to resolve in the basic measurement theory and application technology. The one is namely "the complex stress state of tensor resolution measurement theory", and the other is "the measurement technology of three dimensional stress components". This project intends, under the support of the national natural science foundation, to develop the measurement theory and technology of three dimensional residual stresses. For the precise characterization of processing residual stress distribution and the change in engineering microstructure, the Raman stress analysis method with depth resolution will be developed by constructing a complete set of analytic theory to distinguish all the components of the stress tensor, and then presenting a new technology for the three dimensional measurement of residual stresses in microstructures. The methodology studied in this project may realize the online measurement and analysis for the three dimensional gradient residual stress fields, and their processing- sequen

英文关键词： Raman spectroscopy；Tensor resolved measurement theory；Euler angle measurement；Optic accessory for controlling polarizations；Multiscale mechanical behavior