CN2222352Y - 高分辨率单探头内应力磁测仪的探头 - Google Patents

高分辨率单探头内应力磁测仪的探头 Download PDF

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Publication number
CN2222352Y
CN2222352Y CN 94244736 CN94244736U CN2222352Y CN 2222352 Y CN2222352 Y CN 2222352Y CN 94244736 CN94244736 CN 94244736 CN 94244736 U CN94244736 U CN 94244736U CN 2222352 Y CN2222352 Y CN 2222352Y
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probe
internal stress
high resolution
iron cores
magnetic tester
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CN 94244736
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方慧珍
鹿安理
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Tsinghua University
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Tsinghua University
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Abstract

一种高分辨率单探头内应力磁测仪的探头，属检测仪器。该探头为一由软磁材料制成的圆柱体，一端十字形切开，成为二对相互垂直的铁芯；在一对铁芯上绕激磁线圈，另一对铁芯上绕检测线圈。用本内应力磁测仪可以测得构件表面浓度为0.1mm-1.5mm范围内的内应力。

Description

高分辨率单探头内应力磁测仪的探头
本实用新型涉及金属材料内应力的无损检测，属检测仪器。
在工业生产及日常生活中常需要对工程构件中的内应力进行无损检测，以了解构件中内应力状况，国内已有的磁检测仪，由于检测面积要求大，(15mm×15mm)且检测时必须同时使用一个参考探头(即双探头法)，其检测分辨率不高。因此大大限制了该法的实际应用范围。
木实用新型的目的是提供一种分辨率较高的、不用参考探头的磁测仪的探头。
本实用新型的探头为一由软磁材料制成的园柱体，其一端十字形切开，成为二对相互垂直的铁芯，在一对铁芯上绕激磁线圈，另一对铁芯上绕检测线圈，由于采用高导磁软磁材料，所以探头的直径可制成φ10mm以下。
说明附图如下：
图1为本实用新型探头结构示意图。
结合附图说明实施例如下：
本实用新型的探头结构如图1所示，为一由软磁材料(如铁铝1J16)制成的园柱体，其一端十字切开，成二对相互垂直的铁芯，一对铁芯上(1，2)绕以激磁线圈，另一对铁芯(3，4)上绕以检测线圈，线圈的匝数可按所需激磁强度及检测信号的大小而定。二个线圈的引线都接入信号处理及显示系统。
本实用新型探头使用时，将探头放在被测工件上转动，在激磁线圈上通以交变电流后，即可在检测线圈上测得相应的电信号，将该信号进行处理后即可得知被测件上的内应力情况。
用本实用新型的内应力磁测仪检测构件内应力，当激磁电源在频率50HZ～5000HZ范围内调整时，可测得深度达0.1mm－1.5mm，检测灵敏度为2—3kg/mm2。

Claims (1)

1、一种高分辨率单探头内应力磁测仪的探头，其特征是探头为一由软磁材料制成的圆柱体，其一端十字形切开，成为二对相互垂直的铁芯；在一对铁芯上绕激磁线圈，另一对铁芯上绕检测线圈。
CN 94244736 1994-11-18 1994-11-18 高分辨率单探头内应力磁测仪的探头 Expired - Fee Related CN2222352Y (zh)

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CN 94244736 CN2222352Y (zh) 1994-11-18 1994-11-18 高分辨率单探头内应力磁测仪的探头

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CN 94244736 CN2222352Y (zh) 1994-11-18 1994-11-18 高分辨率单探头内应力磁测仪的探头

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CN2222352Y true CN2222352Y (zh) 1996-03-13

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100370238C (zh) * 2005-07-18 2008-02-20 吉林大学 一种测量铁磁性材料内应力的装置
CN103063735A (zh) * 2011-10-21 2013-04-24 无锡强力环保科技有限公司 五脚磁性应力传感器探头
CN103063734A (zh) * 2011-10-21 2013-04-24 无锡强力环保科技有限公司 九脚磁性应力传感器探头
CN103713040A (zh) * 2012-10-09 2014-04-09 无锡强力环保科技有限公司 两脚磁性探头的残余奥氏体含量检测传感器
CN103837268A (zh) * 2012-11-22 2014-06-04 中国特种设备检测研究院 一种用于结构焊接残余应力检测的九极磁传感器

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100370238C (zh) * 2005-07-18 2008-02-20 吉林大学 一种测量铁磁性材料内应力的装置
CN103063735A (zh) * 2011-10-21 2013-04-24 无锡强力环保科技有限公司 五脚磁性应力传感器探头
CN103063734A (zh) * 2011-10-21 2013-04-24 无锡强力环保科技有限公司 九脚磁性应力传感器探头
CN103713040A (zh) * 2012-10-09 2014-04-09 无锡强力环保科技有限公司 两脚磁性探头的残余奥氏体含量检测传感器
CN103837268A (zh) * 2012-11-22 2014-06-04 中国特种设备检测研究院 一种用于结构焊接残余应力检测的九极磁传感器

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