论文部分内容阅读
一、概述里氏硬度计示值误差测量结果的不确定度主要来自于硬度计的测量重复性、标准里氏硬度块扩展不确定度以及标准里氏硬度块稳定度引入的不确定度。用符合JJG747-1999《里氏硬度计》检定规程中周期检定要求的常用的硬度块对里氏硬度计进行示值测量,在每一硬度块上重复测量5次,5次测量点算术平均值和
First, an overview Leeb hardness tester indication error measurement uncertainty mainly comes from the measurement repeatability of the hardness tester, the standard Leeb hardness of the expansion of uncertainty and the stability of the standard reference to the stability of the block. With the JJG747-1999 “Leeb Hardness Tester” test procedures for verification requirements of the cycle of the commonly used hardness of the Leeb Hardness Tester for indication of measurement, repeated measurements in each hardness block 5 times, 5 times the arithmetic mean with