Journal of Structural and Construction Engineering

Journal of Structural and Construction Engineering

Identification of Damage Location in Double Layer Space Structures Using Structural Dynamic Response and Bayesian Theory

Document Type : Original Article

Authors
Neda Heshmati Shahbulaghi, 1
Elham Ghandi 2
ُShirin Esmaeili, 2
1 Master Graduate,, Faculty of Engineering, University of Mahaghegh Ardabili, Ardabil, Iran
2 Associate Professor, Faculty of Engineering, University of Mahaghegh Ardabili, Ardabil, Iran
10.22065/jsce.2024.474942.3506
Abstract
In the last two decades, identifying the location and severity of damage in structures has become one of the essential areas of research for civil engineers. This aids in increasing the lifespan of structures and controlling damage. Typically, damages occur due to factors like seismic forces, fatigue, unexpected loads, and more. If these damages aren't identified and repaired, it can significantly alter the overall performance of the structural system, leading to potentially irreparable consequences. Damage induces changes in the dynamic properties of structures, making it possible to trace the location and extent of these impairments by examining these alterations. Due to the high sensitivity of dynamic data to damage, these methods have garnered substantial attention from researchers. Among the dynamic methods reliant on modal frequencies, which are fundamental vibrational characteristics of a structure, the modal strain energy method is notable. This approach combines the dynamic properties of a structure with Bayesian statistical theory in both intact and damaged conditions to identify the location of damage. This article utilizes a combination of the modal strain energy method and Bayesian theory to more accurately determine the damaged elements and reduce the likelihood of misidentifying undamaged components as damaged ones. The obtained results demonstrate that this method is highly accurate in detecting single and multiple damages in space structures.
Keywords
Damage identification
space structure
Bayesian theory
dynamic response of structure
modal strain energy

Subjects

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Journal of Structural and Construction Engineering
Volume 12, Issue 06 - Serial Number 95
September 2025
Pages 148-169

  • Receive Date 09 September 2024
  • Revise Date 07 December 2024
  • Accept Date 15 December 2024