Eigenfrequecy-based damage identification method for non-destructive testing based on topology optimization

T. Nishizu, A. Takezawa, M. Kitamura

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Non-destructive testing (NDT) detects damage according to a difference in a physical phenomenon between a normal structure and damaged structure. As a solution avoiding human errors in NDT, a numerical method based on a dynamical numerical analysis model and a structural optimization algorithm was proposed. This method automatically derives a structure with a response that is equal to that of a damaged structure through an optimization procedure. Among structural optimization methods, topology optimization can optimize the structure fundamentally by changing the topology and not just the shape of a structure. Thus, topology optimization is employed together with eigenfrequency analysis, which is the most fundamental methodology of NDT. The proposed method derives a structure that has the same eigenfrequencies as a damaged structure employing topology optimization. The shape and location of damage can be identified through the optimal shape obtained.

Original languageEnglish
Pages (from-to)417-433
Number of pages17
JournalEngineering Optimization
Volume49
Issue number3
DOIs
Publication statusPublished - 2017 Mar 4
Externally publishedYes

Keywords

  • eigenfrequency analysis
  • non-destructive testing
  • sensitivity analysis
  • Topology optimization

ASJC Scopus subject areas

  • Computer Science Applications
  • Control and Optimization
  • Management Science and Operations Research
  • Industrial and Manufacturing Engineering
  • Applied Mathematics

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