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11.发明公开
公开(公告)号：KR1020130065924A
公开(公告)日：2013-06-20
申请号：KR1020110132532
申请日：2011-12-12
Applicant: 한국표준과학연구원
CPC classification number: B06B1/08 , G01N27/825 , G01N29/04 , H01L41/125
Abstract: PURPOSE: A line contact magnetostriction transducer for omnidirectional horizontal shear bulk acoustic wave conversion is provided to easily perform a non-destructive inspection of a sample. CONSTITUTION: A magnetostriction member (100) with a ferromagnetic material closely installs a plate structure end surface (110) with a surface of a sample. An insulator (200) is arranged in a side of the magnetostriction member. A meander coil(300) has a plurality of coil lines extended in the parallel direction to the end surface on the insulator, connects the adjacent coil line so that current flows in the opposite direction with each other and generates a dynamic magnetic field with respect to the magnetostriction member. Magnets (400a,400b) are installed to generate a static magnetic field. [Reference numerals] (AA) Omni-directional horizontal shear
Abstract translation: 目的：提供用于全向水平剪切体声波转换的线接触磁致伸缩传感器，以便轻松执行样品的无损检测。 构成：具有铁磁材料的磁致伸缩构件（100）将板结构端面（110）紧密地安装在样品的表面上。 绝缘体（200）布置在磁致伸缩构件的侧面。 曲折线圈（300）具有在与绝缘体上的端面平行的方向上延伸的多个线圈线，连接相邻的线圈线，使得电流彼此相反地流动，并产生相对于 磁致伸缩构件。 安装磁铁（400a，400b）以产生静磁场。 （标号）（AA）全向水平剪切
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公开(公告)号：KR1020130064171A
公开(公告)日：2013-06-18
申请号：KR1020110130647
申请日：2011-12-08
Applicant: 한국표준과학연구원
CPC classification number: B06B1/08 , G01N27/825 , G01N29/04 , H01L41/125
Abstract: PURPOSE: A magnetostrictive transducer for omnidirectional shear horizontal wave conversion is provided to generate a shear horizontal wave across all the directions of a contacted test piece. CONSTITUTION: A magnetostrictive transducer includes a waveguide(10), a magnetostrictive patch(20), a coil(30), and a magnet(40). A cylindrical waveguide is equipped with a circular cross section and a contact terminal which contacts with a test piece. One or more ring-shaped grooves with different sizes are formed around a central point. The magnetostrictive patch is made of a ferromagnetic material and attached to the waveguide along a circumferential surface. The coil forms a dynamic magnetic field passing through the inside of the waveguide. The magnet forms a static magnetic field in the circumferential direction of the waveguide.
Abstract translation: 目的：提供用于全向剪切水平波转换的磁致伸缩换能器，以在接触的测试件的所有方向上产生剪切水平波。 构造：磁致伸缩换能器包括波导（10），磁致伸缩补片（20），线圈（30）和磁体（40）。 圆柱形波导配备有圆形横截面和与测试片接触的接触端子。 在中心点周围形成一个或多个具有不同尺寸的环形槽。 磁致伸缩贴片由铁磁材料制成并沿圆周表面附接到波导管。 线圈形成通过波导内部的动态磁场。 磁体在波导的圆周方向上形成静磁场。
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公开(公告)号：KR101356751B1
公开(公告)日：2014-02-04
申请号：KR1020120111005
申请日：2012-10-06
CPC classification number: G01N29/048 , B61K9/10 , G01N29/043 , G01N2291/2623
Abstract: The present invention relates to a non-destructive inspection device for a head part of a rail. By inspecting the internal defects of a rail without contacts, the present invention can highly decrease the possibility of the abrasion or damage to a probe or an inspection system being in contact with the top or one side of the rail, can nearly occur the deformation of inspection signals caused by the surface of the rail, can prevent the angle variation of ultrasonic propagation caused inside the rail, and can reduce the inspection time by making the inspection speed fast using ultrasonic signals. The inspection device and the gap control method for maintaining a gap between an EMAT and a rail are to inspect the internal defects of the rail in a state where the ultrasonic probe is not physically in contact with the rail by installing the electromagnetic acoustic transducer (EMAT) for generating and measuring ultrasonic waves in the lower part of a rail inspection vehicle for inspecting the internal defects of the rail on which trains, trams, or subways are driven while moving on the rail.
Abstract translation: 本发明涉及一种用于轨道头部的非破坏性检查装置。 通过检查没有接触的轨道的内部缺陷，本发明可以大大降低与轨道的顶部或一侧接触的探针或检查系统的磨损或损坏的可能性，几乎可以发生变形 由轨道表面引起的检查信号，可以防止轨道内引起的超声波传播的角度变化，并可以通过超声信号使检测速度快速地缩短检查时间。 用于保持EMAT和轨道之间的间隙的检查装置和间隙控制方法是通过安装电磁换能器（EMAT）来检查在超声波探头与轨道物理接触的状态下轨道的内部缺陷 ），用于在轨道检查车辆的下部生成和测量超声波，用于检查轨道上移动时列车，电车或地铁的轨道的内部缺陷。
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公开(公告)号：KR101328063B1
公开(公告)日：2013-11-08
申请号：KR1020110132533
申请日：2011-12-12
Applicant: 한국표준과학연구원
CPC classification number: G01N29/262 , B06B1/085 , G01N29/2412 , G01N2291/0425 , G01N2291/106
Abstract: 본 발명은 수평전단 체적파 변환용 자기변형 위상배열 트랜스듀서에 대한 것으로서, 더욱 상세하게는 강자성 재질로 이루어진 판상 구조의 끝면이 설치지점의 표면과 밀착 설치되는 복수 개의 자기변형 부재; 각 자기변형 부재의 측면 상에 배치되는 절연체; 각 절연체 상에서 상기 끝면과 나란한 방향으로 연장된 복수의 코일 라인들을 구비하고, 인접한 코일 라인은 서로 반대 방향으로 전류가 흐르도록 연결되어 각 자기변형 부재에 대해 동자기장을 발생시키는 미엔더 코일; 및 상기 동자기장에 대해 수직인 정자기장을 발생시키도록 설치되는 자석;을 포함하고, 상기 미엔더 코일에 전류가 공급되면 상기 자기변형 부재가 자기변형 효과에 의해 변형되면서 복수의 수평전단 체적파를 발생시킴으로써, 시간 지연-합(time delay and sum) 처리를 통한 빔 포커싱으로 특정 지점에 신호를 집속하여 스캔을 통해 다양한 지점에 배치된 측정 시편에 대한 이미지를 처리할 수 있고, 이미지 처리된 측정 시편 내 결함 검출도 효과적으로 수행할 수 있으며, 공간상 제약 없이 미소 면적만으로도 설치가 가능하여 활용도가 높다는 장점이 있다.
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