| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
Although carbon fiber reinforced polymer (CFRP) has high mechanical properties, the impact-damage resistance of laminated CFRP continues to be a weak point. An off-plate load easily causes delamination cracking. This study presents an inspection method for composite aircraft components employing the two-step ERCM using lightning protection system. By utilizing strong electrical anisotropy of CFRPs, we can heat only arbitrarily selected layer(s) in a laminated CFRP structure using resistive heating. Because the delamination crack interrupts heat conduction, we can detect the crack by monitoring temperature profile on the structure surface. The method could be used with existing airplane lightning protection systems, which consist of metal strips or mesh mounted on the aircraft surface.
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