| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Outline of Final Research Achievements |
As crack inspection method used in steel bridges, there are magnetic particle flaw detection test and penetrant inspection test. These inspection methods have problems such as long time, narrow range, inspecting unless paint is removed. Therefore, in this research, in order to solve the problem of the existing inspection technology, we developed technology capable of inspecting cracks of steel materials in a short time and in a wide range without removing paint. The development method opens and closes the crack by heating it from the paint by the induction heating device. Measure images before and after heating (before and after opening and closing cracks), and visualize cracks by image analysis. As a result of research, we developed induction heating device,camera device and measuring jig, and succeeded in visualizing cracks by conducting detection experiments on cracked steel members.
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