断后伸长率A测量结果的不确定度评定  

Uncertainty Evaluation for Percentage Elongation after Fracture

作　　者：吴益文[1] 张霁菁[2] 华沂[1] 

机构地区：[1]上海出入境检验检疫局,上海200135 [2]华东理工大学,上海200237

出　　处：《物理测试》2007年第5期51-52,58,共3页Physics Examination and Testing

摘　　要：文章按照GB/T 228-2002《金属材料室温拉伸试验方法》标准的要求,对冷轧奥氏体不锈钢板的断后伸长率进行了测试,并对检测结果的不确定度进行了评定。当k=2时,置信概率p=95%,断后伸长率不确定度评定结果为A=62.5%±2.0%。According to the requirements of the standard GB/T 228-2002 ＂metallic materials tensile testing at ambient temperature＂, the measurement uncertainty for the percentage elongation after fracture of cold-rolled austenitic stainless steel plates was studied in this paper. It shows that the uncertainty of percentage elongation after fracture is 2.0%, when k=2 and A=62.5%.

关 键 词：冷轧奥氏体不锈钢板 断后伸长率 不确定度 

分 类 号：TG115.52[金属学及工艺—物理冶金]