小量塊國際比對及能力驗(yàn)證

韓李疆 何曉延

陜西省計(jì)量科學(xué)研究院,陜西西安710048

摘　要:按照國際比對組織機(jī)構(gòu)提供的比對樣品及技術(shù)指標(biāo)，采用比較法比對測量原理，完成了國際間小量塊比對任務(wù)。建立的測量不確定度分析模型，其擴(kuò)展不確定度置信概率按國際間要求統(tǒng)一選取95％，包含因子選用2的原則，較以前國內(nèi)擴(kuò)展不確定度評定范圍有所縮小，并增加了對測量環(huán)境和測量設(shè)備的技術(shù)要求。此次國際比對證明我們的檢測數(shù)據(jù)全部有效、可信，其評定方法得到了APLAC組織的認(rèn)可。[著者文摘]

International comparison and proficiency tests of short gauge blocksHAN Li-jiang, HE Xiao-yan Shanxi Institute of Metrology, Xi＇ an 710048, China）HAN Li-jiang, HE Xiao-yan Shanxi Institute of Metrology, Xi＇ an 710048, ChinaAbstract:The technical criterion and the short gauge blocks were provided by the international comparison institute APLAC. The authors successfully completed this international comparison of short gauge blocks with the comparative measurement theory. And the mathematical model for evaluating the measurement uncertainty was also built. The evaluated measurement uncertainty was less than that of former domestic measurements when the confidence probability is 95% and the coverage factor k is 2 according to the general international requirements. This international comparison proved the valid and reliable of our test data, and this measurement uncertainty evaluation method has been accepted by APLAC.[著者文摘]

Key words:Short gauge block; International comparison; Mathematical model; Measurement uncertainty