Sensitivity of Parameter Changes in Structural Damage Detection | Zendy

Christopher H. Jenkins | Zendy; Lidvin Kjerengtrøen | Zendy; H. Oestensen | Zendy

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Sensitivity of Parameter Changes in Structural Damage Detection

Author(s) -

Christopher H. Jenkins,

Lidvin Kjerengtrøen,

H. Oestensen

Publication year - 1997

Publication title -

shock and vibration

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.418

H-Index - 45

eISSN - 1875-9203

pISSN - 1070-9622

DOI - 10.1155/1997/807239

Subject(s) - deflection (physics) , hinge , modal , structural engineering , normal mode , modal analysis , sensitivity (control systems) , computer science , engineering , acoustics , materials science , vibration , physics , finite element method , optics , electronic engineering , polymer chemistry

Structural damage detection by nondestructive methods is highly desirable. Changes in modal parameters such as frequency, damping, and mode shape are particularly inviting. Evidence is presented here that reveals that static deflection can, in many cases, be a more sensitive predictor of structural damage than frequency. The reasons for this are illuminated within, and hinge on very fundamental issues about the very nature of structural response. Furthermore, static deflection measurements are often easier to make, with higher levels of accuracy than dynamic measurements. Comparisons are made between theoretical models and experimental results for simple structures, with extensions given to more complex structures.

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