パッチで接着補修された航空機機体構造パネル内の疲労き裂および接着はく離の先端位置および先端形状の同定に関する研究

抄録

Structural health monitoring of fatigue-cracked aircraft structural panels repaired with bonded patches for extending the service life of aging aircraft has received wide attention. In this paper, we deal with an identification for the locations and shapes of crack and disbond fronts in aircraft structural panels repaired with bonded patches. The identification is performed by minimizing the residual norm between the measured in-plane strain range at multiple points on a free surface of patches and the calculated in-plane strain range. The validity of the identification is verified by experiments.