J042043 金属中異質部の高調波画像化([J04204]超音波計測・解析法の新展開(4))
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概要
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Conventional ultrasonic techniques are unable to detect material heterogeneities such as local plastic deformation or solidification boundaries of welds which have nearly same acoustic impedance with base materials. To solve this problem, higher harmonic imaging methods using immersion local resonance and backscattered waves are proposed and the validity of the method is demonstrated for local plastic deformation in thin plates and solidification boundaries of spots welds.
- 一般社団法人日本機械学会の論文
- 2011-09-11