公开(公告)号：US08506159B2

公开(公告)日：2013-08-13

申请号：US13060658

申请日：2008-09-17

申请人： Junichi Nakagawa ,  Tadayuki Ito ,  Tetsuo Nishiyama ,  Masahiro Doki ,  Kozo Saito ,  Belal Gharaibeh ,  Keng Hoo Chuah ,  Ahmad Salaimeh ,  Masahiro Yamamoto ,  Tomoya Takeuchi ,  Kazufumi Ito ,  Huaxiong Huang ,  Sean C. Bohun

发明人： Junichi Nakagawa ,  Tadayuki Ito ,  Tetsuo Nishiyama ,  Masahiro Doki ,  Kozo Saito ,  Belal Gharaibeh ,  Keng Hoo Chuah ,  Ahmad Salaimeh ,  Masahiro Yamamoto ,  Tomoya Takeuchi ,  Kazufumi Ito ,  Huaxiong Huang ,  Sean C. Bohun

IPC分类号： G01N25/18 ,  G01N25/00 ,  G01K5/00

CPC分类号： G01N25/72

摘要： A defect on the surface or in the surface layer of a moving material can be detected by using a method comprising steps of: heating the surface of the material, obtaining thermal image data of the surface of the material using an infrared thermography camera while the surface of the material is being heated up at the heating step or being cooled down after heating, and detecting the defect by calculating Laplacian with respect to temperature of the surface represented by the thermal image data. When the thermal image data is obtained while the material is being heated up, a heating device and the camera is arranged so that thermal energy emitted from the heating device is reflected by the material to come into the camera.

摘要翻译： 可以通过使用以下步骤来检测移动材料的表面或表面层中的缺陷：步骤：加热材料的表面，使用红外热像仪获得材料表面的热图像数据，同时表面 的材料在加热步骤时被加热或在加热之后被冷却，并且通过相对于由热图像数据表示的表面的温度计算拉普拉斯算子来检测缺陷。 当在材料被加热时获得热图像数据时，加热装置和相机被布置成使得从加热装置发射的热能被材料反射以进入相机。

公开(公告)号：US20110249700A1

公开(公告)日：2011-10-13

申请号：US13060658

申请日：2008-09-17

申请人： Junichi Nakagawa ,  Tadayuki Ito ,  Tetsuo Nishiyama ,  Masahiro Doki ,  Kozo Saito ,  Belal Gharaibeh ,  Keng Hoo Chuah ,  Ahmad Salaimeh ,  Masahiro Yamamoto ,  Tomoya Takeuchi ,  Kazufumi Ito ,  Huaxiong Huang ,  Sean C. Bohun

发明人： Junichi Nakagawa ,  Tadayuki Ito ,  Tetsuo Nishiyama ,  Masahiro Doki ,  Kozo Saito ,  Belal Gharaibeh ,  Keng Hoo Chuah ,  Ahmad Salaimeh ,  Masahiro Yamamoto ,  Tomoya Takeuchi ,  Kazufumi Ito ,  Huaxiong Huang ,  Sean C. Bohun

IPC分类号： G01N25/72

CPC分类号： G01N25/72

摘要： A defect on the surface or in the surface layer of a moving material can be detected by using a method comprising steps of: heating the surface of the material, obtaining thermal image data of the surface of the material using an infrared thermography camera while the surface of the material is being heated up at the heating step or being cooled down after heating, and detecting the defect by calculating Laplacian with respect to temperature of the surface represented by the thermal image data. When the thermal image data is obtained while the material is being heated up, a heating device and the camera is arranged so that thermal energy emitted from the heating device is reflected by the material to come into the camera.

摘要翻译： 可以通过使用以下步骤来检测移动材料的表面或表面层中的缺陷：步骤：加热材料的表面，使用红外热像仪获得材料表面的热图像数据，同时表面 的材料在加热步骤时被加热或在加热后被冷却，并且通过相对于由热图像数据表示的表面的温度计算拉普拉斯算子来检测缺陷。 当在材料被加热时获得热图像数据时，加热装置和相机被布置成使得从加热装置发射的热能被材料反射以进入相机。