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Patent Agency Ranking
公开(公告)号：US10473730B2
公开(公告)日：2019-11-12
申请号：US15787001
申请日：2017-10-18
Inventor： Jin Yi Lee , Jung Min Kim , Myung Chul Jung , Ji Su Kim
Abstract: A defect detection device enables easy removal of magnetic impurities. The defect detection device has a structure capable of effectively removing magnetic impurities adhered to a magnetic flux leakage detection device for nondestructive inspection of a small-diameter heat transfer tube or a partially saturated eddy current detection system. With the defect detection device, it is possible to minimize adhesion of magnetic impurities that deteriorate the performance of a leakage magnetic flux detection device for nondestructive inspection of a small-diameter tube of ferromagnetic metal material or a partially saturated eddy current detection system. Further, there is an advantage in that it is possible to remove the adhered magnetic impurities from the defect detection device easily.
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公开(公告)号：US09279783B2
公开(公告)日：2016-03-08
申请号：US13667086
申请日：2012-11-02
Inventor： Jin Yi Lee , Jong Woo Jun , Jung Min Kim
CPC classification number: G01N27/82 , G01R33/072 , G01R33/091
Abstract: Disclosed herein are an apparatus and a method for detecting a crack. The apparatus includes a power supply unit, a sensor module, and a signal reception module. The power supply unit supplies power. The sensor module receives the input power from the power supply unit, and outputs sensing power corresponding to the magnetic field of an object to be measured. The signal reception unit converts the sensing power output from the sensor module into a quantitative value, and computes the distribution of the magnetic field. The sensor module includes a first sensor array configured to detect magnetic field vectors in a direction vertical to a sensor surface, and a second sensor array placed on the first sensor array in an overlapping manner and configured to detect magnetic field vectors in a direction lateral with respect to the sensor surface.
Abstract translation: 这里公开了一种用于检测裂纹的装置和方法。 该装置包括电源单元，传感器模块和信号接收模块。 电源单元供电。 传感器模块从电源单元接收输入电力，并且输出与被测量物体的磁场相对应的感测功率。 信号接收单元将从传感器模块输出的感测功率转换为定量值，并计算磁场的分布。 传感器模块包括第一传感器阵列，其被配置为在垂直于传感器表面的方向上检测磁场矢量;以及第二传感器阵列，其以重叠的方式放置在第一传感器阵列上，并且被配置为检测沿着横向的方向的磁场矢量， 相对于传感器表面。
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公开(公告)号：US11169116B2
公开(公告)日：2021-11-09
申请号：US16694220
申请日：2019-11-25
Inventor： Jin Yi Lee
Abstract: Disclosed herein are a probe for a nondestructive testing device using a crossed gradient induced current and a method of manufacturing an induction coil for a nondestructive testing device. The probe for a nondestructive testing device using a crossed gradient induced current includes an induction coil formed to have a predetermined width and to generate first and second induced currents in a direction crossing each other when a current is applied from a power supply, and a magnetic sensor part installed adjacent to the induction coil so as to measure the first and second induced currents induced from the induction coil.
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公开(公告)号：US10788456B2
公开(公告)日：2020-09-29
申请号：US15748728
申请日：2017-11-28
Inventor： Jin Yi Lee , Jung Min Kim , Sun Bo Sim
IPC: G01N27/90
Abstract: Disclosed is an eddy current inspection device for nondestructive testing. The device includes: a bobbin-shaped coil configured to be inserted into a specimen, which is an object of nondestructive testing, and to apply induction current to an inner diameter of the specimen; a reference coil configured to be inserted into a nondestructive specimen, which is a reference of the specimen, and to apply induction current to an inner diameter of the nondestructive specimen; a cylindrical manual sensor array configured to disposed in the bobbin-shaped coil and to include lines and rows; and a control module configured to select one or more frequencies of multiple frequencies, apply AC power to the bobbin-shaped coil and the reference coil, generate a square wave signal with a varying phase difference, and perform first multiplication by an applied signal and the square wave signal. Accordingly, it is possible to accurately detect a flaw.
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公开(公告)号：US09182373B2
公开(公告)日：2015-11-10
申请号：US13667064
申请日：2012-11-02
Inventor： Jin Yi Lee , Jong Woo Jun , Jung Min Kim
Abstract: Disclosed herein are an apparatus and method for detecting a crack in a small-bore piping system. The apparatus includes a sensor unit, a bobbin coil, a power supply unit, and a signal reception unit. The sensor unit is configured such that a plurality of magnetic sensors is arranged thereon and formed to be cylindrical. The bobbin coil is wound around the outside surface of the sensor unit. The power supply unit applies direct current (DC) power to the sensor unit and alternating current (AC) power to the bobbin coil. The signal reception unit quantifies a signal from the sensor unit. The sensor unit detects the distribution of a magnetic-field attributable to the crack in the small-bore piping system based on the AC power applied to the bobbin coil.
Abstract translation: 这里公开了一种用于检测小口径管道系统中的裂纹的装置和方法。 该装置包括传感器单元，筒管线圈，电源单元和信号接收单元。 传感器单元构造成使得多个磁性传感器布置在其上并形成为圆柱形。 绕线圈卷绕在传感器单元的外表面上。 电源单元向传感器单元施加直流（DC）电力，并向绕线圈线圈施加交流（AC）电力。 信号接收单元对来自传感器单元的信号进行量化。 传感器单元基于施加到筒管线圈的交流电力来检测归因于小口径管道系统中的裂纹的磁场的分布。
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