热轧中宽钢带拉伸试验测量不确定度分析

ANALYSIS OF MEASUREMENT UNCERTAINTY OF TENSILE TEST FOR MIDDLE BROAD STEEL BAND OF HOT-ROLLING

摘要: 根据GUM和JJF 1059—1999标准,分析计算了热轧中宽钢带试样拉伸试验中的不确定度行为,得到Urel(ReL)=1.6%,Urel(Rm)=1.4%,Urel(A)=0.5% 。结果表明,热轧中宽钢带试样拉伸试验中不确定度的水平与GB 228标准附录J预测水平相当,检测过程受控正常。

Abstract: According to GUM and JJF 1059—1999,calculating and comprising every factor on measurement uncertainty of tensile test for square specimen, the result of the relative measurement uncertainty is Urel(ReL)=1.6%,Urel(Rm)=1.4%,Urel(A)=0.5% respectively. It is shown that the level of measurement uncertainty of tensile test for middling broad strip of hot-rolling is match with Annex J of GB/T 228,which means auctorial tensile test procedures are under control normally.