Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지
DOI QR코드

DOI QR Code

Structural Damage Detection for Metal Panel Using Embedded Sensitivity Functions

내재민감도 함수를 이용한 단열타일의 손상 탐지 기법

  • Published : 2005.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

Vibration-based damage identification method using embedded sensitivity functions is discussed. The theory of embedded sensitivity functions is reviewed and applied to identify damage in a three degree-of-freedom system and a metallic panel. Embedded sensitivity functions are algebraic combinations of measured frequency response functions that reflect changes in the response of mechanical systems when mass, damping or stiffness parameters are changed. By comparing the embedded sensitivity functions with finite difference functions using undamaged and damaged frequency response functions, damage is shown to be properly detected, located and quantified in theory and practice assuming that structures of interest are only damaged in one location. Simulated and experimental results indicate that the technique is most effective when changes to frequency response functions are small to avoid distorsions in the estimated perturbations due to variations in the sensitivity functions.

Keywords

References

  1. Doebling, S., Farrar. C., Prime. M. and Shevitz. D., 1996. 'Damage Identification and Health Monitoring of Structural and Mechanical Systems from Changes in Their Vibration Characteristics: A Literature Review.' Los Alamos National Laboratory Report LA-13070-MS
  2. Afolabi. D., Apr. 1987. 'An Anti-resonance Technique for Detecting Structural Damage,' Proceedings of the 5th International Modal Analysis Conference. pp. 491-495
  3. Schulz. M. J., Naser. A. S., Pai, P. F., Linville. M. S. and Chung. J., Feb. 1997. 'Detecting Structural Damage Using Transmittance Functions,' Proceedings of the 15th International Modal Analysis Conference. pp. 638-644
  4. Zhang, H., Schulz. M. J., Naser. A., Ferguson. F. and Pai P. F., 1999. 'Structural Health Monitoring Using Transmittance Functions,' Mechanical Systems and Signal Processing Vol. 13. No.5. pp. 765-787 https://doi.org/10.1006/mssp.1999.1228
  5. Johnson. T. J. and Adams. D. E., 2002. 'Transmissibility as a Differential Indicator of Structural Damage,' Journal of Vibration and Acoustics Vol. 124m No.4. pg. 634-641 https://doi.org/10.1115/1.1500744
  6. Adams. D. E. and Farrar. C. R, Mar. 2002. 'Application of Frequency Domain ARX Features for Linear and Nonlinear Structural Damage Identification,' Proceedings of SPIE. Smart Non-Destructive Evaluation for Health Monitoring of Structural and Biological Systems 4702. pp. 134-147
  7. Meneghetti, U. and Maggiore, A., 1994, 'Crack Detection by Sensitivity Analysis,' Proceedings of the 12th International Modal Analysis Conference, pp. 1292-1298
  8. Wang, W. and Zhang, A., 1987, 'Sensitivity Analysis in Fault Vibration Diagnosis of Structures,' Proceedings of the 5th International Modal Analysis Conference, pp. 496-501
  9. 백용진, 최재성, 배동명, 김경진, 2003, '다변량 통계기법을 이용한 K 및 n의 산정에 관한 연구', 한국소음진동공학회논문집, 제 13권. 제 8호, pp.583-590
  10. Lin, R. M. and Lim, M.K., 1997, 'Derivation of Structural Design Sensitivities from Vibration Test Data,' Journal of Sound and Vibration 201, pp. 613-631 https://doi.org/10.1006/jsvi.1996.0836
  11. Vanhonacker, P., 1980, 'Differential and Difference Sensitivities of Natural Frequencies and Mode Shapes of Mechanical Structures,' American Institute of Aeronautics and Astronautics Journal 18, pp. 1511-1514 https://doi.org/10.2514/3.7738
  12. Belle, H. V., 1982, 'Higher Order Sensitivities in Structural Systems,' American Institute of Aeronautics and Astronautics Journal 20, pp. 286-288 https://doi.org/10.2514/3.7911
  13. Liu, A. Q., Lim, S. P. and Liew, K. M. 1993, 'Sensitivity Analysis of Complex Dynamic System Modeling,' JSME 36, pp. 209-213
  14. Yang, C., Adams, D. E., Yoo, S. and Kim, H., 2004, 'An Embedded Sensitivity Approach for Diagnosing System level Vibration Problems,' Journal of Sound and Vibration 269, pp. 1063-1081 https://doi.org/10.1016/S0022-460X(03)00220-7
  15. Johnson, T, Yang, C., Adams, D. and Ciray, S., 2005, 'Embedded Sensitivity Functions for Characterizing Structural Damage', Journal of Smart Materials and Structures, 14, pp. 155-169 https://doi.org/10.1088/0964-1726/14/1/015
  16. Yang, C., 2004, Experimental Embedded Sensitivity Functions for Use in Mechanical System Identification, Ph. D. Dissertation, School of Mechanical Engineering, Purdue University