Modeling and Detection of Joint Loosening using Output-Only Broad-Band Vibration Data
- 1 December 2008
- journal article
- research article
- Published by SAGE Publications in Structural Health Monitoring
- Vol. 7 (4), 309-328
- https://doi.org/10.1177/1475921708090565
Abstract
Damage detection and structural health monitoring techniques based on vibration data have seen increased attention in recent years. Among the different vibration-based methods, the ones based on random vibrations are of particularly interest, especially when they do not require measurement of the input(s). In this work, several frequency and time domain signal processing techniques are explored in their respective abilities to detect damage in a bolted composite structure. First, a joint loosening model is developed and used to simulate the dynamic response to a stationary Gaussian excitation. Informed by the model, two signal processing techniques are used to assess the connection strength. The first method relies on basic statistical properties of the measured strains and their time derivatives, while the second is based on the signal power in different frequency bands. Both approaches are then used to assess progressive bolt loosening on an experimental composite-to-metal joint. All strain response data were obtained using a fiber optic strain sensing system. Results are presented in the form of Receiver Operating Characteristic (ROC) curves, showing both Type-I and Type-II errors associated with the proposed detection schemes.Keywords
This publication has 28 references indexed in Scilit:
- The use of receiver operating characteristic curves in biomedical informaticsJournal of Biomedical Informatics, 2005
- A multivariate, attractor-based approach to structural health monitoringJournal of Sound and Vibration, 2005
- Uncertainties and dynamic problems of bolted joints and other fastenersJournal of Sound and Vibration, 2005
- An assessment of modal property effectiveness in detecting bolted joint degradation: theory and experimentJournal of Sound and Vibration, 2004
- Equilibrium point damage prognosis models for structural health monitoringJournal of Sound and Vibration, 2003
- Energy dissipation through joints: theory and experimentsComputers & Structures, 2000
- The stochastic Newmark algorithm for random analysis of multi-degree-of-freedom nonlinear systemsComputers & Structures, 1999
- BISPECTRAL ANALYSIS OF THE BILINEAR OSCILLATOR WITH APPLICATION TO THE DETECTION OF FATIGUE CRACKSJournal of Sound and Vibration, 1998
- Quantitative evaluation of neural networks for NDE applications using the ROC (Receiver Operating Characteristic) curve : Okure, M.A.E.; Peshkin, M.A. Review of Progress in Quantitative Nondestructive Evaluation, Vol. 14B. Proceedings of the 21st Symposium on Quantitative Nondestructive Evaluation, Snowmass Village, Colorado (United States), 31 Jul. – 5 Aug. 1994, pp. 2405–2412. Edited by D.O. Thompson and D.E. Chimenti. Plenum Press (1995) ISBN 0306450623NDT & E International, 1997
- Forced Vibration of Continuous System With Nonlinear Boundary ConditionsJournal of Mechanical Design, 1978