并联式微小试样力学拉伸性能高通量测试系统  

High-throughput testing system for mechanical tensile properties of parallel micro-specimen

作　　者：王贵勇 王海舟[1,3] 王蓬 朱林茂[1,2] 祝铁柱 沈学静[1,2] 赵雷 李冬玲[2,3] WANG Gui-yong;WANG Hai-zhou;WANG Peng;ZHU Lin-mao;ZHU Tie-zhu;SHEN Xue-jing;ZHAO Lei;LI Dong-ling(Central Iron&Steel Research Institute,Beijing 100081,China;NCS Testing Technology Co.,LTD.,Beijing 100081,China;Beijing Key Laboratory of Metal Material Characterization,Beijing 100081,China)

机构地区：[1]钢铁研究总院,北京100081 [2]钢研纳克检测技术股份有限公司,北京100081 [3]金属材料表征北京市重点实验室,北京100081

出　　处：《机电工程》2022年第4期524-531,共8页Journal of Mechanical & Electrical Engineering

基　　金：国家重点研发计划资助项目(2018YFB0704100,2021YFB3702103)。

摘　　要：针对材料力学拉伸性能的高通量测试设备及方法缺失的问题,提出了一种并联式的微小试样力学拉伸性能高通量测试系统。首先,对测试系统的结构进行了设计,阐述了其工作原理;对测试系统的控制系统和软件进行了设计,阐述了其工作流程,并搭建了测试系统;然后,对测试系统的准确度进行了评价,并开展了实验研究;实验中,设计了3种不同尺寸的微小拉伸试样,从国家标准拉伸物质上进行了取样加工,并在测试系统上进行了测试;最后,对实验的结果进行了分析,并对测试结果的不确定度进行了评定。研究结果表明:并联式的微小试样力学拉伸性能高通量测试系统准确度等级为0.5级;被测试样的强度随着试样直径的减小,出现了减小的趋势;评定的测试结果不确定度可满足GB/T228.1—2010《金属材料拉伸试验第1部分:室温试验方法》的要求;测试系统的方案可行,能同时对多个微小拉伸试样的力学性能进行测试,且测试结果的离散度较小;相关研究可为微小试样力学性能的高通量测试及工程应用提供设计参考。Aiming at the problem of the lack of high-throughput testing equipment and methods for mechanical tensile properties of materials, a high-throughput testing system based on parallel for mechanical tensile properties of micro-samples was proposed. The structure of the testing system was designed and its working principle was explained. The control system and software of the testing system was designed, its work flow was explained, and the testing system was built. Then, the accuracy of the testing system was evaluated, and experimental research was carried out. In the experiment, three types of micro tensile specimens of different sizes were designed, which were sampled and processed on the national standard tensile material, and were tested on the testing system. Finally, the results of the experiment were analyzed, and the uncertainty of the testing results was evaluated. The results indicate that the accuracy level of the high-throughput testing system for mechanical tensile properties of micro-specimen based on parallel is 0.5, the strength of the tested specimen has a decreasing trend as the diameter of the specimen decreases, and the uncertainty of the evaluated testing results meets the requirements of GB/T 228.1-2010 Metallic Materials-Tensile Testing Part 1:Method of Test at Room Temperature. The testing system is feasible which can test the mechanical tensile properties of multiple micro-samples at the same time, and the dispersion of the test results is small. The relevant research can provide design reference for high-throughput testing and engineering application of mechanical properties of micro-specimen.

关 键 词：金属材料 力学拉伸性能 微小试样 高通量测试系统 

分 类 号：TH871[机械工程—仪器科学与技术]