Comprehensive Structural Health Monitoring (SHM) System

SPA, with the Department of Aerospace Engineering at the University of Maryland, proposes to investigate the feasibility of a wavelet-based constrained adaptive lifting (CAL) technique for health monitoring of aerospace structures. CAL has been used successfully for damage detection in planetary gear systems of rotorcraft main rotor transmission systems. The proposed effort will attempt to modify the previously developed methodologies to make them applicable to continuous structural members, which will require modifications from the methodology used for repeatable transmission vibration signatures. These modifications will include methods of incorporating multiple sensor responses and non-uniform load spectrums. Analytical development will be followed by in-laboratory experimental validation on undamaged and damaged cantilevered beams.