A New Inverse Vibration Method For Detection And Characterization Of Multiple Defects In Beams
This paper concerns the development of a vibration-based method for non-destructive detection and characterization of defects (e.g., flaws or cracks) in structures, particularly in beams. The developed method considers changes in the strain energy of the structure when excited by external sources (mechanically or acoustically) as a means for detecting localized effects of defects. We implemented non-contact laser vibrometery, optimization techniques, identified and utilized the most contributing modes in an elegant formulation for the weighted energy computation. Experimental and computer-simulated results for cantilever beams with multiple circular holes are presented. The results obtained clearly demonstrate the effectiveness of the developed method for determining the location and size of defects. Also, the accuracy and robustness of the method are discussed.
Proceedings of SPIE - The International Society for Optical Engineering
Number of Pages
Article; Proceedings Paper
Source API URL
Moslehy, Faissal A., "A New Inverse Vibration Method For Detection And Characterization Of Multiple Defects In Beams" (2002). Scopus Export 2000s. 2920.