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LÜ Xiuqian, SHI Zhengyan, ZHAI Haimeng. Uncertainty Evaluation on Average Grain Size of Metals Measured by Straight-Line Cutting Point Method[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2018, 54(4): 265-268. DOI: 10.11973/lhjy-wl201804006
Citation: LÜ Xiuqian, SHI Zhengyan, ZHAI Haimeng. Uncertainty Evaluation on Average Grain Size of Metals Measured by Straight-Line Cutting Point Method[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2018, 54(4): 265-268. DOI: 10.11973/lhjy-wl201804006

Uncertainty Evaluation on Average Grain Size of Metals Measured by Straight-Line Cutting Point Method

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  • Received Date: May 08, 2017
  • The average intercept of grains of a metal was measured by straight-line cutting point method, each uncertainty component during measurement was evaluated, and then according to the uncertainty propagation law, the combined standard uncertainty and the final expanded uncertainty of the average grain size were obtained. The results show that under the test condition, the expanded uncertainty for measurement of average grain size of the metal U=0.1, when the coverage factor k=2, and the average grain size grade G=8.4±0.1. The smaller measurement uncertainty of this evaluation was related to the uniform grain size, clear grain boundaries, good condition of instruments, close measurement level of staffs, high accuracy of straight-line cutting point method and so on. During the measurement, attentions should be paid to above factors.
  • [1]
    叶卫平. 实用钢铁材料金相检验[M]. 北京:机械工业出版社,2012.
    [2]
    王滨. 国内外结构钢产品的晶粒度要求与检验[J]. 理化检验(物理分册),2015,51(8):564-569.
    [3]
    王维发,王星,王培科,等. ZG25MnF8钢调质组织原奥氏体晶粒的显示方法[J]. 理化检验(物理分册),2016, 52(1):25-27,35.
    [4]
    中国合格评定国家认可中心. 材料理化检验测量不确定度评估指南及实例(CNAS-GL10:2006)[M]. 北京:中国计量出版社,2007.
    [5]
    王承忠. 测量不确定度基本原理和评定方法及在材料检测中的评定实例[J]. 理化检验(物理分册),2013,49(9):597-604,617;2013,49(10):668-673;2013,49(11):756-758;2013,49(12):823-826.

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