8mm铜杆穿过式涡流探头校准方法  

Calibration Method of Through Type Eddy Current Probe for 8mm Copper Pole Testing

作　　者：徐红伟[1] 张科红[1] 孙坚[1] 徐景红[2] 

机构地区：[1]中国计量学院 机电学院,杭州310018 [2]杭州职业技术学院 信息系,杭州310018

出　　处：《无损检测》2010年第2期116-118,121,共4页Nondestructive Testing

基　　金：国家质检总局科技计划资助项目(2006QK64)

摘　　要：涡流检测探头的校准对保证涡流在线检测精度有重要意义。研究了φ8 mm铜杆穿过式涡流在线检测探头的校准方法。根据铜杆的集肤深度,设计了人工标准缺陷,利用带有人工标准缺陷的铜杆作为对比试样进行校准。在要求的校准速度下,比对探头对人工标准缺陷实际检测增益,实现探头的精度校准。Through-type eddy current probe calibration is indispensable to ensure the accuracy of on-line detection. In this paper, an eddy current probe calibration approach is studied of using contrast samples with standard artificial defects in it. According to standard depth of penetration of copper rods, the criteria of artificial defects are determined. In accordance with the speed of copper rods, through comparison of the corresponding standards for defect detection signals, the accurate calibration of probe is implemented. Experiments show the effectiveness of the method.

关 键 词：涡流检测 穿过式探头 校准 标准透入深度 

分 类 号：TG115.28[金属学及工艺—物理冶金]