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- Title
Damage detection in a fixed-fixed beam using natural frequency changes.
- Authors
Khan, Muhammad Wasif; Din, Naveed Akmal; Haq, Rizwan Ul
- Abstract
This paper presents a damage detection technique which uses change in Frequency Response Function (FRF) and Modal Strain Energy (MSE) for damage detection in beam and truss like structures. It's a robust approach for Structural Health Monitoring (SHM) using natural frequency for structural damage assessment. This technique couples FRF with Iterative Modal Strain Energy (IMSE) method to accurately localize and quantify the damage with only few frequencies, overcoming the limitation of mode shape based damage detection methods which requires mode shapes at full coordinates but damage is either over/underestimated. In the current approach, a damage detection algorithm is developed and validated by conducting numerical studies for a Fixed-Fixed beam, both noise-free and noise-effected cases are simulated. The numerical studies reveal that proposed algorithm is capable of identifying, localizing and quantifying the damage accurately at reduce computational cost.
- Subjects
STRUCTURAL health monitoring; MODE shapes; STRAIN energy
- Publication
Vibroengineering Procedia, 2020, Vol 30, p38
- ISSN
2345-0533
- Publication type
Article
- DOI
10.21595/vp.2019.21081