内齿异型钢管抗拉强度试验结果不确定度评定
EVALUATION OF UNCERTAINTY IN MEASUREMENT ON TENSILE STRENGTH OF IRREGULAR-SHAPED TUBES WITH INTERNAL TEETH
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摘要: 采用称重法对内齿异型钢管抗拉强度试验结果进行不确定度评定。结果表明,内齿异型钢管的Rm为400.5 N·mm-2,U95为5.6 N·mm-2,νeff为3.2。该方法对类似产品抗拉强度试验的不确定度评定有一定参考价值。Abstract: The evaluation of uncertainty on tensile strength test for section steel tube with internal tooth was made by weighting method. The results reveal that,Rm=400.5 N/mm2 (MPa),U95=5.6 N/mm2 and νeff=32,respectively. It is considered that the method will provid reference for uncertainty evaluation of tensile strength test of similar products.
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