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1. 发明申请

WO1996028727A1 NON-DESTRUCTIVE EVALUATION OF PIPES AND TUBES USING MAGNETOSTRICTIVE SENSORS 审中-公开
标题翻译：使用磁感应传感器对管和管进行非破坏性评估
公开(公告)号：WO1996028727A1
公开(公告)日：1996-09-19
申请号：PCT/US1996002255
申请日：1996-02-20
申请人： SOUTHWEST RESEARCH INSTITUTE
发明人： SOUTHWEST RESEARCH INSTITUTE , KWUN, Hegeon , TELLER, Cecil, M., II
IPC分类号： G01N29/14
CPC分类号： G01N29/14 , G01N29/2412 , G01N2291/0421 , G01N2291/048 , G01N2291/101 , G01N2291/102 , G01N2291/2626 , G01N2291/2634
摘要： A method and apparatus for the inspection of ferromagnetic and non-ferromagnetic pipes (14) or other cylindrical shell structures utilizing the magnetostrictive effect to detect defects within the structure. The invention constitutes an active testing application, wherein a transmitting coil element (16) generates a mechanical pulse (15) within a cylindrical shell structure through the magnetostrictive effect and a second coil (24) detects reflected mechanical waves (15) within the pipe, or a single sensor (10) functions as both transmitter and detector. The present invention also anticipates a passive monitoring application with a detection coil (16) that continuously monitors ferromagnetic or non-ferromagnetic cylindrical structures for mechanical or acoustic wave emissions (15). Non-ferromagnetic structures (14) are made amenable to inspection by attaching a layer of ferromagnetic material such as nickel on a wall of the structure by plating or bonding such material in a local area where the sensor is to be placed.
摘要翻译：用于检查铁磁和非铁磁管（14）或利用磁致伸缩效应来检测结构内的缺陷的其它圆柱形壳结构的方法和装置。本发明构成主动测试应用，其中发射线圈元件（16）通过磁致伸缩效应在圆柱形外壳结构内产生机械脉冲（15），第二线圈（24）检测管内的反射机械波（15）或者单个传感器（10）用作发射器和检测器两者。本发明还预期具有连续监测用于机械或声波发射的铁磁或非铁磁圆柱形结构的检测线圈（16）的被动监测应用（15）。非铁磁结构（14）可以通过在传感器要放置的局部区域中电镀或粘合这种材料来将结构上的铁等铁磁材料层附着在结构的壁上来进行检查。

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