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20 July 2004 Development of an automatic tapping device for practical application of tapping sound
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In this work, a newly proposed NDE method named Tapping Sound Analysis was verified and demonstrated. The numerically simulated reference data for the detection of the subsurface defects of laminated composites were verified experimentally. The closeness of numerical results and experimental results were checked by using the concept of feature index. According to the comparison of numerical results and experimental results, sound print (the reference data of Tapping Sound Analysis) could be successfully obtained through present numerical procedures. In order to show the performance of Tapping Sound Analysis as a NDE method, detection of delamination inside laminated composite was demonstrated. Using numerically simulated reference data and the concept of feature index, delaminated region was successfully detected. To improve the practicality of Tapping Sound Analysis, more large laminated composites were inspected. A two-dimensional image of feature indices was drawn to visualize the damaged area.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Joon Seok Hwang and Seung Jo Kim "Development of an automatic tapping device for practical application of tapping sound", Proc. SPIE 5393, Nondestructive Evaluation and Health Monitoring of Aerospace Materials and Composites III, (20 July 2004);

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