| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and device for testing an interface for preventing a determining mistake of peeling and soundness on the interface of a laminated material by determining goodness/badness of a contact state of an ultrasonic probe. SOLUTION: This interface testing method comprises a first step of making ultrasonic wave come from the surface of a base material 2 via the ultrasonic probe 5 and measuring an ultrasonic multiple reflection echo from the interface, and a second step of determining the goodness/badness of the contact state of the ultrasonic probe 5 with the surface of the base material 2 by comparing the ultrasonic multiple reflection echo measured in the first step with a previously measured ultrasonic multiple reflection echo where the interface corresponds to peeling. Therefore, the determining mistake of the peeling and soundness on the interface between the inner peripheral surface of the base material 2 and a coating material 3 that are caused by a contact failure of the ultrasonic probe 5 can be prevented. COPYRIGHT: (C)2009,JPO&INPIT
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