| Budget Amount *help |
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2021: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2020: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
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| Outline of Final Research Achievements |
An ultrasonic visualizing system applicable to high temperatures was developed by the combination of an optical fiber ultrasonic sensor and a laser-ultrasonic technique in order to inspect non-destructively the health condition of structures made of heat-resistant composite materials under high temperature. By using this system, we succeeded in visualizing the propagation behavior of ultrasonic guided waves in a structural material at high temperature of 1000 degrees Celsius. In addition, an accurate detection method for microscopic damage in composite materials was established by separation of multiple modes existing in the ultrasonic guided wave propagating in the composite material to observe the mode conversion behaviors at the damage.
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