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Verification of Damage Detection Using In-Service Time Domain Response  

Choi, Sang-Hyun (한국철도대학 철도시설토목과)
Kim, Dae-Hyork (한국철도대학 철도시설토목과)
Park, Nam-Hoi (한국건설교통기술평가원 건설2실)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.9, no.5, 2009 , pp. 9-13 More about this Journal
Abstract
Modal parameters including resonant frequencies and mode shapes are heavily utililized in most damage identification throries for structural health monitoring. However, extracting modal parameters from dynamic responses needs postprocessing which inevitably involves errors in curve-fitting resonants as well as transforming the domain of responses. In this paper, the applicability of a damage identification method based on free vibration responses to the in-sevice responses is experimentally verified. The experiment is performed via applying periodic and nonperiodic moving loads to a simply supported beam and displacement responses are measured. The moving load is simulated using steel balls and a downhill device. The damage identification results show that the in-service response may be applicable to identifying damage in the beam.
Keywords
Damage detection; In-service response; Time domain; Health monitoring;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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