| 摘要 |
<P>PROBLEM TO BE SOLVED: To allow diagnosis of corrosion of a copper stranded wire without being affected by ultrasonic coupling efficiency. <P>SOLUTION: A diagnostic device 10 includes: an ultrasonic probe 2 which makes an ultrasonic wave incident on a copper stranded wire and receives a reflected wave of the incident ultrasonic wave; a determination value calculating unit which calculates a determination value not including the coupling efficiency of the copper stranded wire on the basis of the intensity of back scattering component being a reflected wave of the ultrasonic wave from a region of the copper stranded wire, to which the distance from the ultrasonic probe 2 is within a prescribed range, and the intensity of the reflected wave of the ultrasonic wave from a target region where the degree of corrosion should be determined; and a determination unit which determines the degree of corrosion of the copper stranded wire on the basis of the determination value calculated by the determination value calculating unit. <P>COPYRIGHT: (C)2012,JPO&INPIT |
