지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.12
- 수록면
- 684 - 691 (8page)
- DOI
- 10.5050/KSNVE.2021.31.6.684
이용수
초록· 키워드
오류제보하기
In the present work, a new method to classify healthy and damaged composite structures using experimentally obtained structural vibration data is proposed and evaluated. After fabricating healthy and damaged laminated composite beam specimens, structural vibration data for fixed-free boundary conditions is experimentally obtained via random excitation. The measured vibration signals are converted into images using a Short-Time Fourier Transform and used as input data for learning and testing. First, an autoencoder is used to detect the presence of damage. The autoencoder model is trained using the vibration data of the healthy composite structure. The vibration data of a healthy composite structure is input to the trained autoencoder model with the data of a damaged composite structure, and errors between the input and output data are compared to detect the presence of damage. Second, a convolutional neural network model is used to classify the healthy and damaged composite structures with two different damage locations. This study confirms that the proposed technique can effectively detect and locate damage in composite structures.
목차
ABSTRACT
1. 서론
2. 데이터 획득
3. 탐지 및 분류
4. 결론
References
참고문헌 (12)
참고문헌 신청
Saravanos, D. A. and Hopkins, D. A., 1996, Effects of Delaminations on the Damped Dynamic Characteristics of Composite Laminates: Analysis and Experiments, Journal of Sound and Vibration, Vol. 192, No. 5, pp. 977~993.
Cho, M. and Kim, J. S., 2001, Higher-order Zig-zag Theory for Laminated Composites with Multiple Delaminations, Journal of Applied Mechanics, Vol. 68, No. 6, pp. 869~877.
Radu, A. G. and Chattopadhyay, A., 2002, Dynamic Stability Analysis of Composite Plates Including Delaminations Using a Higher Order Theory and Transformation Matrix Approach, International Journal of Solids and Structures, Vol. 39, No. 7, pp. 1949~1965.
Kim, H. S., Kim, J. and Choi, S. B., 2005, Study on Dynamic Characteristics of Delaminated Smart Composite Laminates, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 15, No. 4, pp. 395~403.
Chattopadhyay, A., Peralta, P., Papandreou- Suppappola, A. and Kovvali, N., 2009, A Multidisciplinary Approach to Structural Health Monitoring and Damage Prognosis of Aerospace Hotspots, Aeronautical Journal, Vol. 113, No. 1150, pp.799~810.
Cho, M. and Kim, J. S., 2001, Higher-order Zig-zag Theory for Laminated Composites with Multiple Delaminations, Journal of Applied Mechanics, Vol. 68, No. 6, pp. 869~877.
Radu, A. G. and Chattopadhyay, A., 2002, Dynamic Stability Analysis of Composite Plates Including Delaminations Using a Higher Order Theory and Transformation Matrix Approach, International Journal of Solids and Structures, Vol. 39, No. 7, pp. 1949~1965.
Kim, H. S., Kim, J. and Choi, S. B., 2005, Study on Dynamic Characteristics of Delaminated Smart Composite Laminates, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 15, No. 4, pp. 395~403.
Chattopadhyay, A., Peralta, P., Papandreou- Suppappola, A. and Kovvali, N., 2009, A Multidisciplinary Approach to Structural Health Monitoring and Damage Prognosis of Aerospace Hotspots, Aeronautical Journal, Vol. 113, No. 1150, pp.799~810.
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