作　　者： (谢科）; (何光成）;

机构地区： 贵州钢绳股份有限公司,贵州遵义563000

出　　处： 《金属制品》 2017年第4期46-48,67,共4页

摘　　要： 为了对松弛性能是否符合相应等级做出准确判定,需要计算测量结果的不确定度。对1×7-15.20-1 860级预应力混凝土用钢绞线进行应力松弛试验,分析试验过程中的不确定度来源,并对每个不确定度分项逐一进行不确定度评定,给出合成不确定度、扩展不确定度及检测结果的不确定度报告,为评定应力松弛试验结果不确定度提供参考。 To conclude whether the relaxation performance meets the corresponding level,calculation to the uncertainty of the measurement results is required. 1 × 7-15. 20-1 860 grade steel strand for pre-stressed concrete was carried out stress relaxation test,the uncertainty sources in the test were analyzed,and each uncertainty was assessed by its scale individually. Reports on synthetic uncertainty,extended uncertainty and test results uncertainty are initiated,which can provide reference for assessing the uncertainty of stress relaxation test results.

关 键 词： 钢绞线 应力松弛 不确定度 弹性模量 松弛率