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http://dx.doi.org/10.5139/JKSAS.2021.49.1.13

Image Based Damage Detection Method for Composite Panel With Guided Elastic Wave Technique Part II. Damage Size Estimation Algorithm  

Kim, Changsik (Inha University)
Jeon, Yongun (Korea Aerospace University)
Park, Jungsun (Korea Aerospace University)
Cho, Jin Yeon (Inha University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.49, no.1, 2021 , pp. 13-20 More about this Journal
Abstract
In this paper, a new algorithm is proposed to estimate the damage size by combining the reflected area with the reflected position and extracting contours in proportion to the maximum value of pixels from the visible image. The cumulative summation feature vector algorithm is used to obtain the area of the reflected signal. To get the position of the reflected signal, the signal correlation algorithm is used to decompose the reflected signal from the damage. The proposed algorithm is tested and validated for composite panels. Repetitive experiments are performed and it is confirm that the proposed algorithm is reproducible. Further, it is verified that the damage size can be estimated appropriately by the proposed algorithm.
Keywords
Guided Elastic Wave; Damage Size; Cumulative Summation; Signal Correlation; Composite Panel;
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