Computers and Concrete

  • 제2권6호
  • /
  • Pages.481-498
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  • 2005
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
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Damage detection in beams and plates using wavelet transforms

  • Rajasekaran, S. (Infrastructure Engineering, PSG College of Technology) ;
  • Varghese, S.P. (Infrastructure Engineering, PSG College of Technology)
  • 투고 : 2005.01.19
  • 심사 : 2005.11.24
  • 발행 : 2005.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

A wavelet based approach is proposed for structural damage detection in beams, plate and delamination of composite plates. Wavelet theory is applied here for crack identification of a beam element with a transverse on edge non-propagating open crack. Finite difference method was used for generating a general displacement equation for the cracked beam in the first example. In the second and third example, damage is detected from the deformed shape of a loaded simply supported plate applying the wavelet theory. Delamination in composite plate is identified using wavelet theory in the fourth example. The main concept used is the breaking down of the dynamic signal of a structural response into a series of local basis function called wavelets, so as to detect the special characteristics of the structure by scaling and transformation property of wavelets. In the light of the results obtained, limitations of the proposed method as well as suggestions for future work are presented. Results show great promise of wavelet approach for damage detection and structural health monitoring.

키워드

참고문헌

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피인용 문헌

  1. A new method to detect cracks in plate-like structures with though-thickness cracks vol.14, pp.3, 2014, https://doi.org/10.12989/sss.2014.14.3.397
  2. Performance of Vibration Based Damage Detection Algorithms for Detection of Disbond in Stiffened Metallic Plates vol.144, 2016, https://doi.org/10.1016/j.proeng.2016.05.030
  3. Application of entropy in identification of breathing cracks in a beam structure: Simulations and experimental studies 2017, https://doi.org/10.1177/1475921717704626
  4. The State-of-the-Art on Framework of Vibration-Based Structural Damage Identification for Decision Making vol.7, pp.5, 2017, https://doi.org/10.3390/app7050497
  5. Development in vibration-based structural damage detection technique vol.21, pp.5, 2007, https://doi.org/10.1016/j.ymssp.2006.10.002
  6. Numerical comparison of the beam model and 2D linearized elasticity vol.33, pp.5, 2009, https://doi.org/10.12989/sem.2009.33.5.621
  7. Identification of reinforced concrete beam-like structures subjected to distributed damage from experimental static measurements vol.5, pp.1, 2008, https://doi.org/10.12989/cac.2008.5.1.037
  8. Performance evaluation of damage detection algorithms for identification of debond in stiffened metallic plates using a scanning laser vibrometer 2017, https://doi.org/10.1177/1077546316687956
  9. A simple method to detect cracks in beam-like structures vol.9, pp.4, 2005, https://doi.org/10.12989/sss.2012.9.4.335
  10. Combined effects of material properties and boundary conditions on the large deflection bending analysis of circular plates on a nonlinear elastic foundation vol.25, pp.6, 2020, https://doi.org/10.12989/cac.2020.25.6.537
  11. Towards an Integrated Approach to Infrastructure Damage Assessment in the Aftermath of Natural Hazards vol.11, pp.10, 2005, https://doi.org/10.3390/buildings11100450