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    • 3. 发明授权
    • Eddy current testing method and apparatus for inspecting an object for flaws
    • 用于检查物体的涡流检测方法和装置的缺陷
    • US08803516B2
    • 2014-08-12
    • US13140845
    • 2009-12-14
    • Takashi HibinoTakashi FujimotoKeisuke KomatsuYoshiyuki NakaoMakoto TakataMakoto Sakamoto
    • Takashi HibinoTakashi FujimotoKeisuke KomatsuYoshiyuki NakaoMakoto TakataMakoto Sakamoto
    • G01R33/12G01N27/90G01N27/82
    • G01N27/902G01N27/82
    • In an eddy current testing method which involves using a rotatable eddy current testing probe in which a detection coil is arranged within an exciting coil, a change in detection sensitivity (a deviation of detection sensitivity) which changes depending on the rotational position of the detection coil is reduced. The eddy current testing probe includes an exciting coil EC1, a detection coil DC1, an exciting coil EC2 and a detection coil DC2, which are mounted on a disk DS. The eddy current testing probe is placed so as to face a circumferential surface of an object to be inspected T, which is in the shape of a circular cylinder, and the disk DS is rotated. Then, the distance (liftoff) between the detection coils DC1 and DC2 and an inspection surface changes. Therefore, also the detection sensitivity to a flaw signal changes. To reduce the change in detection sensitivity, the detection sensitivity is adjusted by detecting the rotational position (rotational angle) of the detection coils DC1 and DC2.
    • 在涡电流测试方法中,涉及使用其中检测线圈布置在励磁线圈内的可旋转涡流测试探针,检测灵敏度的变化(检测灵敏度的偏差)根据检测线圈的旋转位置而变化 降低了。 涡电流测试探头包括安装在盘DS上的励磁线圈EC1,检测线圈DC1,励磁线圈EC2和检测线圈DC2。 将涡电流测试探针放置成面对被检查物体T的圆周表面,该圆形表面呈圆柱形,圆盘DS旋转。 然后,检测线圈DC1和DC2之间的距离(剥离)和检查面发生变化。 因此,对缺陷信号的检测灵敏度也会发生变化。 为了减小检测灵敏度的变化,通过检测检测线圈DC1和DC2的旋转位置(旋转角度)来调节检测灵敏度。
    • 4. 发明申请
    • EDDY CURRENT TESTING METHOD AND EDDY CURRENT TESTING APPARATUS
    • EDDY电流测试方法和EDDY电流测试装置
    • US20120161758A1
    • 2012-06-28
    • US13140845
    • 2009-12-14
    • Takashi HibinoTakashi FujimotoKeisuke KomatsuYoshiyuki NakaoMakoto TakataMakoto Sakamoto
    • Takashi HibinoTakashi FujimotoKeisuke KomatsuYoshiyuki NakaoMakoto TakataMakoto Sakamoto
    • G01R33/12
    • G01N27/902G01N27/82
    • In an eddy current testing method which involves using a rotatable eddy current testing probe in which a detection coil is arranged within an exciting coil, a change in detection sensitivity (a deviation of detection sensitivity) which changes depending on the rotational position of the detection coil is reduced. The eddy current testing probe includes an exciting coil EC1, a detection coil DC1, an exciting coil EC2 and a detection coil DC2, which are mounted on a disk DS. The eddy current testing probe is placed so as to face a circumferential surface of an object to be inspected T, which is in the shape of a circular cylinder, and the disk DS is rotated. Then, the distance (liftoff) between the detection coils DC1 and DC2 and an inspection surface changes. Therefore, also the detection sensitivity to a flaw signal changes. To reduce the change in detection sensitivity, the detection sensitivity is adjusted by detecting the rotational position (rotational angle) of the detection coils DC1 and DC2.
    • 在涡电流测试方法中,涉及使用其中检测线圈布置在励磁线圈内的可旋转涡流测试探针,检测灵敏度的变化(检测灵敏度的偏差)根据检测线圈的旋转位置而变化 降低了。 涡电流测试探头包括安装在盘DS上的励磁线圈EC1,检测线圈DC1,励磁线圈EC2和检测线圈DC2。 将涡电流测试探针放置成面对被检查物体T的圆周表面,该圆形表面呈圆柱形,圆盘DS旋转。 然后,检测线圈DC1和DC2之间的距离(剥离)和检查面发生变化。 因此,对缺陷信号的检测灵敏度也会发生变化。 为了减小检测灵敏度的变化,通过检测检测线圈DC1和DC2的旋转位置(旋转角度)来调节检测灵敏度。
    • 5. 发明申请
    • MAGNETIC TESTING METHOD AND APPARATUS
    • 磁性测试方法和装置
    • US20140191751A1
    • 2014-07-10
    • US14238958
    • 2012-08-15
    • Toshiyuki SuzumaYoshiyuki NakaoMakoto SakamotoYoshiuki Oota
    • Toshiyuki SuzumaYoshiyuki NakaoMakoto SakamotoYoshiuki Oota
    • G01N27/82
    • G01N27/82G01N27/83G01N27/902
    • A magnetic testing method and apparatus can accurately detect a flaw by magnetizing a test object to such a degree that the object becomes magnetically saturated while solving the problems of a large magnetizing device is required when only a DC magnetic field is applied and that the test object generates heat when only an AC magnetic field is applied.A magnetic testing apparatus comprises a first magnetizing device for applying a DC bias magnetic field to a test object P in substantially parallel to the direction in which a flaw F to be detected extends, a second magnetizing device for applying an AC magnetic field to the test object P substantially perpendicularly to the direction in which the flaw F to be detected extends, and a detecting device for detecting leakage flux produced by the magnetization of the test object P accomplished by the first and second magnetizing devices.
    • 磁性测试方法和装置可以通过将测试对象磁化以使物体变得磁饱和的程度来准确地检测缺陷,同时在仅施加DC磁场的同时解决大的磁化装置的问题,并且测试对象 仅在施加交流磁场时产生热量。 磁性测试装置包括:第一磁化装置,用于将大致平行于待检测的缺陷F的方向的测试对象P施加直流偏置磁场延伸的第二磁化装置,用于将AC磁场施加到测试的第二磁化装置 物体P大体上垂直于待检测的缺陷F的方向延伸;以及检测装置,用于检测由第一和第二磁化装置实现的被测试物体P的磁化产生的漏磁通。
    • 7. 发明授权
    • Defect inspecting apparatus
    • 缺陷检查装置
    • US09121833B2
    • 2015-09-01
    • US13551014
    • 2012-07-17
    • Kazunori AnayamaToshiyuki SuzumaYoshiyuki NakaoMasami IkedaKenta Sakai
    • Kazunori AnayamaToshiyuki SuzumaYoshiyuki NakaoMasami IkedaKenta Sakai
    • H04N7/18G01N21/952
    • G01N21/952
    • A defect inspecting apparatus includes a first light source, a first image capture device that receives the reflection light emitted from the first light source and reflected by the outer peripheral surface of a lip part to grab the image of the outer peripheral surface of the lip part, a second light source, a second image capture device 8 that receives the reflection light emitted from the second light source and reflected by a load face to grab the image of the load face, a third light source, a third image capture device that receives the reflection light emitted from the third light source and reflected by a thread bottom face inspection zone 106 to grab the image of the thread bottom face inspection zone, and an inspection device for inspecting defects by processing the captured images grabbed by the first to third image capture devices.
    • 缺陷检查装置包括第一光源,第一图像捕获装置,其接收从第一光源发射并被唇部的外周面反射的反射光,以抓住唇部的外周面的图像 ,第二光源,第二图像捕获装置8,其接收从第二光源发射并被负载面反射以吸收负载面的图像的反射光;第三光源;第三图像捕获装置,其接收 从第三光源发射并由线底面检查区域106反射的反射光,以抓取线底面检查区域的图像;以及检查装置,用于通过处理由第一至第三图像抓取的捕获图像来检查缺陷 捕获设备。
    • 8. 发明授权
    • Eddy current testing method and eddy current testing apparatus
    • 涡流测试方法和涡流测试仪
    • US08552717B2
    • 2013-10-08
    • US12531840
    • 2008-03-17
    • Shigetoshi HyodoYoshiyuki Nakao
    • Shigetoshi HyodoYoshiyuki Nakao
    • G01N27/82
    • G01N27/9013
    • It is an object of the present invention to provide an eddy current testing apparatus capable of accurately detecting any flaws occurring in a columnar or cylindrical subject to be tested regardless of their extending directions, with the use of the same probe coil.The eddy current testing apparatus 100 according to the present invention comprises a spinning plate 1 and a probe coil 2 disposed on the spinning plate 1. The probe coil is a probe coil capable of obtaining a differential output about a scanning direction of a detection signal which corresponds to a detected eddy current induced in the subject to be tested. The spinning plate is disposed in such a position that a spinning center RC of the spinning plate faces with an axial center PC of the subject to be tested. A distance R between the spinning center of the spinning plate and a center of the probe coil is set so that a difference between a maximum amplitude of a differential output at an axially extending artificial flaw provided in the subject to be tested and a maximum amplitude of a differential output at a circumferentially extending artificial flaw provided in the subject to be tested falls within a predetermined range.
    • 本发明的目的是提供一种涡流测试装置,其能够使用相同的探针线圈来精确地检测在被测试的柱状或圆柱体中发生的任何缺陷,而不管其延伸方向如何。 根据本发明的涡流检测装置100包括设置在纺丝板1上的纺丝板1和探针线圈2.探针线圈是能够获得关于检测信号的扫描方向的差分输出的探针线圈, 对应于在待测试对象中感测的检测到的涡流。 纺丝板被设置在纺纱板的纺纱中心RC与待测试对象的轴心中心PC相对的位置。 将纺丝板的纺纱中心与探针线圈的中心之间的距离R设定为使被测试对象物中设置的轴向延伸的人造缺陷的差动输出的最大振幅与最大振幅 在待测试对象中设置的周向延伸的人造缺陷的差分输出落在预定范围内。