Vibration tests in CFRP plates for damage detection via non-parametric signal analysis

Issue title: International Conference on Structural Engineering Dynamics – ICEDyn 2011

Article type: Research Article

Authors: Moreno-García, P. | Castro, E. | Romo-Melo, L. | Gallego, A. | Roldán, A.

Affiliations: Applied Physics Department, University of Granada, Granada, Spain | Applied Physics Department, Universidad Politécnica de Cartagena, Cartagena, Murcia, Spain | Electronics and Computer Technology Department, University of Granada, Granada, Spain

Note: [] Corresponding author: P. Moreno-García, Applied Physics Department, University of Granada, 18071, Granada, Spain. E-mail: [email protected]

Abstract: In this paper, two procedures for damage detection in Carbon Fiber-Reinforced Polymer (CFRP) plates are shown. One is based on the use of statistical frequency series to detect the presence of damage. This method was tested experimentally on a CFRP plate with induced damage. The other one is a procedure based on Ritz method and wavelet transform that was applied to the numerical vibration modes of a damaged CFRP plate. The former method can also be used experimentally, even if the material engineering constants are unknown.

Keywords: CFRP plates, SHM, damage detection, vibration test, Ritz method, wavelet analysis

DOI: 10.3233/SAV-2012-0694

Journal: Shock and Vibration, vol. 19, no. 5, pp. 857-865, 2012