| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a magnetic characteristic measuring method and a magnetic characteristic measuring device capable of easily and highly accurately detecting a shape defective part, a magnetic characteristic defective part and a sound part which is neither the shape defective part nor the magnetic characteristic defective part. <P>SOLUTION: When measuring magnetic characteristic distribution of a steel plate using electromagnetism, a speed of changing a signal level of a magnetic characteristic detection signal received from the steel plate and the signal level are extracted. On the basis of the speed of changing the signal level, a shape defective part is determined and on the basis of the signal level, a magnetic characteristic defective part is determined. Thus, the shape defective part, the magnetic characteristic defective part and a sound part which is neither the shape defective part nor the magnetic characteristic defective part can be detected easily and highly accurately. <P>COPYRIGHT: (C)2013,JPO&INPIT |
