Indentation-Damage Visualization in CFRP by Resistive Heating: Analytical Verification of The Inspection of Aircraft Using Its Lightning Protection Systems
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概要
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Quick and automatic inspection of carbon fiber reinforced polymer (CFRP) aircraft after each flight would reduce the safety factor and allow for more flights. Visualization of impact damage was developed in an earlier study as an automatic self-monitoring method. The damaged area was visualized by selective and intense resistive heating based on its decreased through-thickness resistivity compared to undamaged areas. In the present study, the lightning protection system of a composite aircraft was used to apply a uniform electrical current distribution and electric heat to a large structure. Subsequent coupled thermal-electrical analyses showed that even small indentations (depth <0.15 mm) could be relatively easily detected in structures about 1 m in size.
著者
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SUZUKI Yoshiro
Tokyo Institute of Technology
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MIZUTANI Yoshihiro
Tokyo Institute of Technology
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MATSUZAKI Ryosuke
Tokyo Institute of Technology
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Todoroki Akira
Tokyo Inst. Technol. Tokyo Jpn
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