| Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2019: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2018: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2017: ¥10,660,000 (Direct Cost: ¥8,200,000、Indirect Cost: ¥2,460,000)
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| Outline of Final Research Achievements |
This study is on the defect imaging technique using elastic waves in solid media generated by laser emission. For large structures such as concrete walls and steel pipes, low frequency range of audible sound can be used for the imaging. In the study for micro cracks in aluminum castings, delaminations in carbon fiber reinforced plastics and micro void in electrodes in electric circuits, the relationships between the ability of detection and resonance frequencies are revealed, which theoretically shows the feasibility for imaging micro voids.
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