薄板拉伸能力验证计划与技术分析  

Proficiency testing scheme of sheet steel and technical analysis

作　　者：方健[1] 丁富连[1] 魏毅静[1] 纪红玲[1] 

机构地区：[1]宝山钢铁股份有限公司研究院,上海201900

出　　处：《中国计量学院学报》2008年第4期319-324,共6页Journal of China Jiliang University

基　　金：宝钢股份科研基金资助项目(No.R05DSEC100)

摘　　要：介绍了由宝钢股份公司组织的"BSTC T002金属材料拉伸试验"能力验证计划,以及围绕金属薄板所开展的"两步法"性能均匀性检验.基于稳健统计技术与Z比分数,对15家实验室获得的数据进行了技术分析,讨论了影响试验结果可靠性的测量因素.稳健化置信椭圆揭示出造成PT计划离群结果的主要因素应为系统误差(实验室间变异).A proficiency testing scheme of tensile for metallic materials （No. BSTC T002 organized by Baoshan Iron ＆ Steel Co. , Ltd. ） has been introduced. A two-step homogeneity testing procedure was applied to evaluate the raw materials, properties and the PT samples after machinery preparation. By using the robust statistics method and Z scores, the measurement performance of 15 participant laboratories was evaluated, with the investigation of influence factors on the tensile results as well. In addition, it was clearly revealed by the confidence ellipse diagram that systematic errors （between laboratory variations） might be the main resource causing the outlier data in the PT scheme.

关 键 词：拉伸试验 能力验证 稳健统计 

分 类 号：TH701[机械工程—仪器科学与技术]