Journal of the Korean Society for Nondestructive Testing (비파괴검사학회지)

The Korean Society for Nondestructive Testing (한국비파괴검사학회)
권호 표지

Vibration-based Identification of Directional Damages in a Cylindrical Shell

  • Kim, Sung-Hwan (Department of Mechanical Engineering, Inha University) ;
  • Oh, Hyuk-Jin (Department of Mechanical Engineering, Inha University) ;
  • Lee, U-Sik (Department of Mechanical Engineering, Inha University)
  • Published : 2005.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

This paper introduces a structural damage identification method to identify 4he multiple directional damages generated within a cylindrical shell by using the measured frequency response function (FRF). The equations of motion for a damaged cylindrical shell are derived. by using a theory of continuum damage mechanics in which a small material volume containing a directional damage is represented by the effective orthotropic elastic stiffness. In contrast with most existing vibration-based structural damage identification methods which require the modal Parameters measured in both intact and damaged states, the present method requires only the FRF-data measured at damaged state. Numerically simulated damage identification tests are conducted to verify the feasibility of the Proposed structural damage identification method.

Keywords

References

  1. Journal of Mechanical Engineering Science v.20 no.2 A Vibration Technique for Non-Destructively Assessing the Integrity of Structures Adams, R.D.;Cawley, P.;Pye, C.J.;Stone, B.J. https://doi.org/10.1243/JMES_JOUR_1978_020_016_02
  2. Journal of Sound and Vibration v.191 no.5 An Experimentally Validated Damage Detection Theory in Smart Structures Banks, H.T.;Inman, D.J.;Leo, D.J.;Wang, Y. https://doi.org/10.1006/jsvi.1996.0160
  3. Numerical Methods for Engineers Chapra, S.C.;Canale, R.P.
  4. European Journal of Mechanics A/Solids v.21 Locating Damage in Circular Cylindrical Composite Shells Based on Frequency Sensitivities and Mode Shapes Ip, K.H.;Tse, P.C. https://doi.org/10.1016/S0997-7538(02)01228-7
  5. 45th AIAA Structures, Structural Dynamics, and Material Conference, AIAA-2004-1982 A Frequency Response Function-Based Damage Identification Method for Cylindrical Shell Structures Kim, S.;Jeong, W.;Cho, J.;Lee, U.
  6. International Journal of Solids and Structures v.34 no.33;34 Anisotropic Damage Mechanics Based on Strain Energy Equivalence and Equivalent Elliptical Microcracks Lee, U.;Lesieutre, G.A.;Fang, L. https://doi.org/10.1016/S0020-7683(97)00022-X
  7. Computers & Structures v.80 no.2 A Frequency Response Function-Based Structural Damage Identification Method Lee, U.;Shin, J. https://doi.org/10.1016/S0045-7949(01)00170-5
  8. The Mechanics of Vibrations of Cylindrical Shells Markus, S.
  9. Journal of Sound and Vibration v.230 no.4 Use of Non-degeneracy in Nominally Axisymmetric Structures for Fault Detection with Application to Cylindrical Geometries Royston, T.J.;Spohnholtz, T.;Ellingson, W.A. https://doi.org/10.1006/jsvi.1999.2653
  10. Vibrations of Shells and Plates Soedel, W.
  11. Journal of Sound and Vibration v.215 no.3 Damage Index Algorithm for a Circular Cylindrical Shell Srinivasan, M.G.;Kot, C.A. https://doi.org/10.1006/jsvi.1998.1627
  12. Journal of Sound and Vibration v.210 no.1 Detecting Structural Damage Using Frequency Response Functions Thyagarajan, S.K.;Schulz, M.J.;Pai, P.E. https://doi.org/10.1006/jsvi.1997.1308
  13. Stresses in Plates and Shells Ugural, A.
  14. Computer Methods in Applied Mechanics and Engineering v.147 Structural Damage Detection Using Measured FRF Data Wang, Z.;Lin, R.M.;Lim, M.K. https://doi.org/10.1016/S0045-7825(97)00013-3
  15. Structural Analysis of Laminated Anisotropic Plates Whitney, J.M.