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1. 发明专利

JP2007113974A Method and apparatus for measuring distortion using phase-shift digital holographic method 有权
标题翻译：使用相位数字全息方法测量失真的方法和装置
公开(公告)号：JP2007113974A
公开(公告)日：2007-05-10
申请号：JP2005303775
申请日：2005-10-19
申请人： Hitachi Zosen Corp , 日立造船株式会社
发明人： KITAGAWA AKIKAZU , NAKATANI MITSUYOSHI , FUKUDA NAOAKI , IWATA SETSUO , ASHIDA SATOSHI , ISHIHARA TERUHISA , MORIMOTO YOSHIHARU , MATSUI TORU , FUJIGAKI MOTOHARU , MEGURO SAKAE
IPC分类号： G01B11/16
摘要： PROBLEM TO BE SOLVED: To provide a distortion measuring method using a phase-shift digital holographic method capable of performing noncontact, wide-range, and highly accurate measurement on distortions of a part to be measured with high spatial resolution.
SOLUTION: When the phase-shift digital holographic method and two luminous fluxes of a laser beam R are used to measure in-plane displacements and out-of-plane displacements in the surface of an object to be measured, the laser beam R emitted from one laser irradiator 11 is divided into two measuring lights Ra and Rb. The measuring lights are irradiated to the object M to be measured mounted to a placing surface D in perpendicular in-plane directions which intersect with each other at right angles. Half of each measuring light is directly irradiated to the object to be measured on the placing surface, and the rest halves are reflected at reflecting mirrors 31 and 32 arranged at right angles to the placing surface and made incident at the same angle of incidence from both sides of the object to be measured to measure the amount of displacement in in-plane directions in axial directions of intersection between the placing surface and each perpendicular surface and in out-of-plane directions perpendicular to the placing surface. The amount of displacement in three-dimensional directions is differentiated to determine distortions of the surface of the object to be measured in this method.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种使用能够以高空间分辨率对待测量部件的失真进行非接触，宽范围和高精度测量的相移数字全息方法的失真测量方法。解决方案：当使用相移数字全息方法和激光束R的两个光束来测量待测物体的表面中的面内位移和面外位移时，激光束从一个激光照射器11发射的R被分成两个测量光Ra和Rb。将测量光照射到安装在放置面D上的测量对象物M的垂直面内方向上，直角相交。每个测量光的一半在放置表面上直接照射到待测量的物体，其余半部在与放置表面成直角布置的反射镜31和32处被反射并以与入射角相同的入射角进入要测量的物体的侧面以测量在放置表面和每个垂直表面之间以及垂直于放置表面的平面外方向上的轴向方向上的面内方向上的位移量。在三维方向上的位移量是微分的，以确定该方法中待测物体的表面的变形。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2007071793A Method for sensing crack of structural member 有权
标题翻译：传感结构构件裂纹的方法
公开(公告)号：JP2007071793A
公开(公告)日：2007-03-22
申请号：JP2005261426
申请日：2005-09-09
申请人： Hitachi Zosen Corp , 日立造船株式会社
发明人： ASHIDA SATOSHI , ISHIHARA TERUHISA , TANO HIROSHI , KITAGAWA AKIKAZU , NAKATANI MITSUYOSHI , KENTA TATSUYA , IWATA SETSUO , MORIMOTO YOSHIHARU , MATSUI TORU , FUJIGAKI MOTOHARU
IPC分类号： G01B11/16 , G01N21/88
CPC分类号： G03H2001/0458
摘要： PROBLEM TO BE SOLVED: To provide a method for sensing cracks of structural member, capable of sensing a crack over a wide range without a need for work such as coating to a structural member of an object to be inspected. SOLUTION: The method senses a crack generated at a welded joint of steel plates using distortion data obtained a phase shift digital holography, which includes a crack sensing step for sensing the presence of a crack, based on the presence of a distortion relaxation region B indicated by a semi-ellipse range which is adjacent to a linear section 4 with a distortion value that varies and the distortion value of the region B is smaller than the average distortion value of a distortion normal region A sufficiently separated from the section 4, and a crack-length sensing step for sensing a crack length based on a length in parallel with the section 4 of the region B sensed by the crack-sensing step. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于感测结构构件的裂纹的方法，其能够在宽范围内感测裂纹，而不需要诸如涂覆到被检查物体的结构构件的工件。解决方案：该方法使用获得的相移数字全息术的失真数据来感测在钢板的焊接接头处产生的裂纹，其包括用于感测裂纹的存在的裂纹感测步骤，基于存在失真弛豫区域B由半椭圆范围表示，该半椭圆范围与畸变值变化的线性部分4相邻，并且区域B的失真值小于与部分4充分分离的畸变正常区域A的平均失真值以及裂纹长度检测步骤，用于基于与由裂纹检测步骤感测的区域B的部分4平行的长度来感测裂纹长度。版权所有（C）2007，JPO＆INPIT

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