A robust FRF damage indicator combined with optimization techniques for damage assessment in complex truss structures: Case Studies in Construction Materials

S. Khatir, S. Tiachacht, C.-L. Thanh, H. Tran-Ngoc, S. Mirjalili, M. Abdel Wahab

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Vibration-based damage detection tools are frequently employed because of their advantages over other non-destructive techniques. This paper presents an improved Frequency Response Function (FRF) indicator for damage identification in complex structures. To verify the effectiveness of the improved damage indicator, different structures are used, namely a 20-Bar Planar Truss (2D), a 28-Bar Space Truss (3D), a 72-Bar Space Truss, and a 600-bar Space Truss. The numerical models of all these structures are built in MATLAB using Finite Element Method (FEM). The improved indicator detects and localises single and multiple damages in the first stage. Next, after eliminating the healthy elements, it is used in a new objective function to solve the damage quantification problem using recent optimization techniques, including Artificial Gorilla Troops Optimizer (GTO), Dingo Optimization Algorithm (DOA), African Vulture Optimization algorithm (AVOA), and Gradient-Based Optimizer (GBO). The results demonstrate that all optimization techniques can accurately predict the exact level of damage. However, GTO is the most efficient in terms of convergence. To study the effectiveness of this indicator in case of noisy data, different levels of noise are considered in the damage assessment exercises. © 2022 The Authors
Original languageEnglish
JournalCase Stud. Constr. Mater.
Volume17
DOIs
Publication statusPublished - 2022

Keywords

  • 2D and 3D complex truss structures
  • African Vulture Optimization algorithm
  • Artificial Gorilla Troops Optimizer
  • Damage detection
  • DOA
  • Frequency response function
  • GBO
  • Inverse problem
  • Frequency response
  • Inverse problems
  • Nondestructive examination
  • Numerical methods
  • Shape optimization
  • Trusses
  • 2d and 3d complex truss structure
  • African vulture optimization algorithm
  • Artificial gorilla troop optimizer
  • Dingo optimization algorithm
  • Frequency response functions
  • Gradient-based optimizers
  • Optimization algorithms
  • Optimizers
  • Truss structure

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