涡流检测用于无粘结预应力钢绞线护套厚度测量的试验研究  

Experimental research on the eddy current testing method for sheath thickness measurement of unbonded prestressed steel strand

作　　者：王威[1] 牛晓波[1] 苏三庆[1] 任广超 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055

出　　处：《西安建筑科技大学学报（自然科学版）》2016年第3期340-345,共6页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：国家自然科学基金面上项目(51478383;51578449);陕西省自然科学基金项目(2015JM5192)

摘　　要：涡流检测技术是一种常用的无损检测技术.通过利用涡流对无粘结预应力钢绞线护套厚度的测量试验,来判断钢绞线护套厚度涡流检测方法的可行性.将此方法所得结果与游标卡尺测量所得结果的比较,发现两种结果虽然有一定差异,但差异并不大.利用差值参数d和F,分别对涡流检测结果进行误差和方差分析,发现最大误差仅为2.3%,最大方差为0.004 5,说明涡流检测无粘结预应力钢绞线护套厚度的方法是可行的,其检测结果的精度和稳定性都比较高.Eddy current testing technology is a commonly used non-destructive testing technique . By the unbonded prestressed strand sheath thickness measurement testing based on eddy current ,the feasibility of the sheath eddy current testing methods are analyzeci, and the results by this method obtained are compared with the results by the vernier caliper measurements. It was found that the two results have some difference, but the difference is small. Using the different parameters d and F, eddy current testing results for error are analyzed and then found that the maximum error is only 2.3%,and the maximum variance is 0.004 5. The proposed method of eddy current testing to measure sheath thickness is feasible, and the accuracy and stability of the method can be ensured definitely.

关 键 词：涡流检测 护套厚度 误差 稳定性 钢绞线 

分 类 号：TU391[建筑科学—结构工程]