悬丝耦合共振法测量金属弹性模量的不确定度评定  

Evaluation on measurement uncertainty of elastic modulus of metallic materials by suspension wire coupled resonance

作　　者：李春辉 张聪毅 王雪放 刘攀[1,2,3] 刘辉 张欣耀 LI Chunhui;ZHANG Congyi;WANG Xuefang;LIU Pan;LIU Hui;ZHANG Xinyao(Luoyang Ship Material Research Institute,Luoyang 471023,China;National Key Laboratory for Marine Corrosion and Protection,Luoyang 471023,China;National New Material Production and Application Demonstration Platform(Advanced Marine Engineering and High-tech Ship Materials),Luoyang 471023,China;Henan Key Laboratory of Technology and Application of Structural Materials for Ship and Marine Equipment,Luoyang 471023,China)

机构地区：[1]洛阳船舶材料研究所,河南洛阳471023 [2]海洋腐蚀与防护全国重点实验室,河南洛阳471023 [3]国家新材料生产应用示范平台(先进海工与高技术船舶材料),河南洛阳471023 [4]河南省船舶及海工装备结构材料技术与应用重点实验室,河南洛阳471023

出　　处：《物理测试》2025年第1期26-29,共4页Physics Examination and Testing

基　　金：国家新材料生产应用示范平台建设项目(TC180A6MR/2)。

摘　　要：蒙特卡洛法(MCM)是利用对概率分布进行随机抽样而进行分布传播的方法。分别采用蒙特卡洛法和GUM法对GB/T 22315—2008《金属材料弹性模量和泊松比试验方法》中悬丝耦合共振法(动态法)测定钛合金弹性模量的不确定度进行了评定。根据蒙特卡洛法的评定结果,单次试验结果可表达为(123.6±1.6)GPa,包含因子k=2;根据GUM法的评定结果,单次试验结果可表达为(123.6±1.7)GPa,k=2。两种方法所得结果、不确定度及置信区间上、下限的偏差分别为+0.0、-0.2、+0.2、-0.1 GPa,偏差均小于数值容差(0.5 GPa),两种评定方法结果一致。Monte Carlo method is a distributed propagation method based on random sampling for probability distribution.Monte Carlo method and GUM method were used to evaluate the uncertainty in the determination of elastic modulus of titanium alloy by suspension wire coupled resonance(dynamic method)specified in GB/T 22315-2008 Metallic materials-Determination of modulus of elasticity and Poisson′s ratio.According to the evaluation results of Monte Carlo method,the results of single test could be expressed as(123.6±1.6)GPa with coverage factor of k=2.According to the evaluation results of GUM method,the results of single test could be expressed as(123.6±1.7)GPa,k=2.The deviations of the results,expanded uncertainty,the upper and lower limits of the confidence interval obtained by the above two methods were+0.0,0.2,+0.2,and 0.1 GPa,respectively.The deviations were less than the numerical tolerance(0.5 GPa).The results of the above two methods were consistent.

关 键 词：蒙特卡洛法(MCM) GUM法 不确定度 弹性模量 钛合金 悬丝耦合共振法 

分 类 号：TG115.5[金属学及工艺—物理冶金]