小尺度浅层瞬变电磁检测复合材料的实验研究

英文篇名：Experimental research on small yardstick and shallow transient electromagnetic testing of composites
中文刊名：制造技术与机床
英文刊名：Manufacturing Technology & Machine Tool
作者：陈兵芽 ; 于润桥
英文作者：CHEN Bingya ; YU Runqiao(Key Laboratory of Nondestructive Testing(Ministry of Education) ; Nanchang Hangkong University ; Nanchang 330063 ; CHN)
中文关键词：复合材料 ; 瞬变电磁 ; 线圈 ; 异常
英文关键词：Composites ; Transient Electromagnetism ; Coil ; Anomaly
出版日期：2012-07-02
机构：南昌航空大学无损检测技术教育部重点实验室;
年：2012
期：07
出版单位：制造技术与机床

摘要

针对碳纤维复合材料复杂的结构特点,借鉴地质勘探中的瞬变电磁法,提出小尺度浅层瞬变电磁法对复合材料进行检测。采用浅层瞬变电磁勘探系统,通过改进检测线圈结构并合理选择阻尼电阻,可以实现碳纤维复合材料的瞬变电磁检测。实验结果表明,剖面曲线主要异常的个数与实际缺陷的个数相同,而且异常宽度与缺陷大小的变化规律也是一一对应的。
To the complicated structural characteristic of carbon composites,transient electromagnetic method(TEM) in the geology prospecting is used for reference,small yardstick and shallow TEM is put forward to measure composites.The TEM testing of carbon fibre composite material can be achieved by using shallow TEM exploration system,improving dection coil structure and reasonably selecting damping resistance.The experimental result indicates that main anomaly of profile curve has the same number as actual defect of test block,and anomalous width is consistent with defect size in change rule.

引文

[1]李志君.先进复合材料的无损检测[J].宇航材料工艺,2000(5):28-31.
    [2]Wright David L,Smith David V,Abraham Jare D.A VETEM survey of a former munitions foundry site at the Denver Federal Center:in Proceedings for SAGEEP’2000[C].Denver,2000,459-468.
    [3]稽艳鞠.浅层高分辨率全程瞬变电磁系统中全程二次场提取技术研究[D].吉林:吉林大学,2004.
    [4]马静.浅层瞬变电磁信号采集与处理技术研究[D].重庆:重庆大学,2008.
    [5]王华军.阻尼系数对瞬变电磁观测信号的影响特征[J].地球物理学报,2010,53(2):428-434.
    [6]陈明生.二维地质体的瞬变电磁场响应特征[J].地震地质,2001,23(2):252-256.