金属板材室温抗拉强度测量不确定度评定和分析
Evaluation and analysis of Uncertainty in the measurement of tensile strength of metal sheets at room temperature
本文立足于检验检测工作过程中测试参数测量不确定度评定的重要性，以金属板材室温抗拉强度测试为例，分析了某检测机构在实际抗拉强度和断后伸长率参数的测量过程中，受到所使用的力学试验机准确度等级、检测人员操作熟练度、测量重复性等因素的影响下，不确定度来源和评定的过程，为金属板材室温抗拉强度测试的不确定度评定工作提供参考依据，旨在对后续实验室质量控制提出改进措施，促进技术人员专业水平、测试能力的进一步提升。
Based on the importance of evaluating the measurement uncertainty of test parameters in the process of inspection and testing work, taking the tensile strength test of metal plates at room temperature as an example, this paper analyzes that in the actual measurement process of tensile strength and elongation after fracture parameters of a certain testing institution, under the influence of factors such as the accuracy grade of the mechanical testing machine used, the operational proficiency of the testing personnel, and the measurement repeatability, The source of uncertainty and the evaluation process provide a reference basis for the uncertainty evaluation work of the tensile strength test of metal sheets at room temperature, aiming to propose improvement measures for the subsequent laboratory quality control and promote the further improvement of the professional level and testing ability of technicians.
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