Adaptive-scale damage detection strategy for plate structures based on wavelet finite element model

Wen Yu He, Songye Zhu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

14 Citations (Scopus)

Abstract

An adaptive-scale damage detection strategy based on a wavelet finite element model (WFEM) for thin plate structures is established in this study. Equations of motion and corresponding lifting schemes for thin plate structures are derived with the tensor products of cubic Hermite multi-wavelets as the elemental interpolation functions. Sub-element damages are localized by using of the change ratio of modal strain energy. Subsequently, such damages are adaptively quantified by a damage quantification equation deduced from differential equations of plate structure motion. WFEM scales vary spatially and change dynamically according to actual needs. Numerical examples clearly demonstrate that the proposed strategy can progressively locate and quantify plate damages. The strategy can operate efficiently in terms of the degrees-of-freedom in WFEM and sensors in the vibration test.
Original languageEnglish
Pages (from-to)239-256
Number of pages18
JournalStructural Engineering and Mechanics
Volume54
Issue number2
DOIs
Publication statusPublished - 1 Jan 2015

Keywords

  • Adaptive-scale damage detection
  • Modal strain energy
  • Plate structure
  • Wavelet finite element model

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanical Engineering
  • Mechanics of Materials

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