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Basic study on crack inspection technique using vibro-thermography

In recent study, active thermography has reached a high status as an easy and speedy defects inspection method in a NDT field.This paper newly proposes a non-disassembly and non-contact NDT method using a Vibro-Thermography for detecting and evaluating of fatigue cracks at neck parts of the conveyance roll in the steel making plant.In this method,

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