| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an inspection apparatus and an inspection method for accurately detecting a surface defect on a stainless steel plate whose scale is removed by hot rolling, annealing and acid washing. <P>SOLUTION: An incident light is irradiated from a light emitting apparatus for scanning a light in the width direction of the stainless steel plate at an angleαto a traveling direction of the stainless steel plate. A regular reflection light is reflected from the surface of the stainless steel plate at the angleα, and received by a regular reflection CCD camera. An irregular reflection light is reflected from the surface of the stainless steel plate at the angleβ, and received by an irregular reflection CCD camera. An input signal as regular reflection data and irregular reflection data obtained by the regular reflection CCD camera and the irregular reflection CCD camera is transmitted to a calculation apparatus. The calculation apparatus calculates and processes the regular reflection data and the irregular reflection data regarding the same surface defect. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
