基于音圈致动的微米压入力学测试仪器的研制

项目名称： 基于音圈致动的微米压入力学测试仪器的研制

项目编号： No.11272318

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 张泰华

作者单位： 浙江工业大学

项目金额： 118万元

中文摘要： 微米力学测试是材料、物理、力学等学科基础研究的通用和必备技术，相关测试仪器的研制蕴含着力学的科学原理和问题。本申请项目旨在，针对金属材料，发展一类基于音圈致动压入方式测定材料硬度和弹塑性参数的技术，以兼顾传统硬度计和材料试验机的测试功能，拓宽纳米压入仪的测试范围。主要内容包括：研究柔性支撑的音圈致动测量系统动力学的建模、分析和控制，以优化其设计方案；制作基于深度敏感原理的微米压入仪，以发展样品的微区测量技术；建立相关的检验和校准技术，以评定仪器特性；完善基于球形压入识别硬度、弹性模量、屈服应变和幂硬化指数的一体化分析方法，以形成高效测试方法；选择若干典型材料，进行压入和拉伸对比和校核的试验，以确认压入所测定弹塑性参数的可靠性。所研制的仪器，做到理论可靠、技术可行、结果可信，拥有自主知识产权，强化实用性和经济性，并以此形成有关技术方法和规范。

中文关键词： 实验力学；微米力学；力学性能；仪器化压入；力学参数识别

英文摘要： Micromechanical testing is a universal and essential technique for fundamental researches on materials, physics, mechanics, and so on. Mechanical theories and problems are involved in the developing instrument for micromechanical testing. This proposed project is aimed to develop a catalog of voice coil actuated indentation testing techniques for measuring hardness and elastoplastic parameters of metals. These techniques will be compatible with hardness testers and material test machines, and will expand the working range of nanoindentation testers. Targets of this project mainly include: (i) researching model, analyze and control of dynamics for measuring system based on flexible supporting voice coil actuator to optimize tester design, (ii) manufacturing a depth-sensing microindentation tester to develop locally probing techniques, (iii) developing techniques of verification and calibration to evaluate instrument characteristics, (iv) improving the integrated analyzing method for measuring hardness, elastic modulus, yield strain, and work-hardening exponent using spherical indentation to develop simplified testing procedures, (v) comparing the results of indentation tests and conventional tensile tests on typical materials to verify the reliability of determination of elastoplastic parameters by indentation te

英文关键词： experimental mechanics；micromechanics；mechanical property；instrumented indentation；extracting mechanical property