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http://dx.doi.org/10.3795/KSME-A.2017.41.5.401

Damage Detection on Thin-walled Structures Utilizing Laser Scanning and Standing Waves  

Kang, Se Hyeok (School of Mechanical Engineering, Chonnam Nat'l Univ.)
Jeon, Jun Young (School of Mechanical Engineering, Chonnam Nat'l Univ.)
Kim, Du Hwan (School of Mechanical Engineering, Chonnam Nat'l Univ.)
Park, Gyuhae (School of Mechanical Engineering, Chonnam Nat'l Univ.)
Kang, To (Nuclear Convergence Technology Division, Korea Atomic Energy Research Institute)
Han, Soon Woo (Nuclear Convergence Technology Division, Korea Atomic Energy Research Institute)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.41, no.5, 2017 , pp. 401-407 More about this Journal
Abstract
This paper describes wavenumber filtering for damage detection using single-frequency standing wave excitation and laser scanning sensing. An embedded piezoelectric sensor generates ultrasonic standing waves, and the responses are measured using a laser Doppler vibrometer and mirror tilting device. After scanning, newly developed damage detection techniques based on wavenumber filtering are applied to the full standing wave field. To demonstrate the performance of the proposed techniques, several experiments were performed on composite plates with delamination and aluminum plates with corrosion damage. The results demonstrated that the developed techniques could be applied to various structures to localize the damage, with the potential to improve the damage detection capability at a high interrogation speed.
Keywords
Laser Doppler Vibrometery; Damage Detection; Wave Propagation; Wavenumber Filtering;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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