Paper Title:
Novel Vibration-Based Methods for Detecting Delamination Damage in Composite Plate and Shell Laminates
  Abstract

The paper describes an on-going research effort aimed at detecting the presence of delamination damage in composite panels based upon their higher-frequency structural response. Two alternative damage indexes are examined that facilitate the identification of the location and extent of delaminations. The damage indexes do not require vibration measurements to be performed on the undamaged structure. Use is made of the bending and twisting curvatures corresponding to the higher-frequency mode shapes that are post-processed via two different smoothing techniques. The modal data are obtained via finite element models based on Mindlin theory and including delaminations. These are introduced using a sub-laminate strategy that permits multiple damages to be modelled through the thickness. Various delamination sizes and locations are examined with a random noise superposed on the data in order to ascertain the degree of sensitivity of the damage index to the noise in the experimental data.

  Info
Periodical
Key Engineering Materials (Volumes 293-294)
Edited by
W.M. Ostachowicz, J.M. Dulieu-Barton, K.M. Holford, M. Krawczuk and A. Zak
Pages
289-296
DOI
10.4028/www.scientific.net/KEM.293-294.289
Citation
M. Gherlone, M. Mattone, C. Surace, A. Tassotti, A. Tessler, "Novel Vibration-Based Methods for Detecting Delamination Damage in Composite Plate and Shell Laminates ", Key Engineering Materials, Vols. 293-294, pp. 289-296, 2005
Online since
September 2005
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Marco Gherlone, Marco Di Sciuva
Abstract:The article deals with the application of a higher-order FEM approach to the analysis of the dynamic behaviour of undamaged and damaged...
531
Authors: Stuart Wildy, Benjamin Cazzolato, Andrei Kotousov
Abstract:This paper presents an experimental investigation of a new method for damage detection based on the most fundamental concept in continuum...
269
  | Authors: C. Devivier, Daniel Thompson, Fabrice Pierron, M.R. Wisnom
Abstract:This paper studies the effect of delaminations on strain maps for a simple cantilever beam. The aim is to build an experimental set-up which...
109
Authors: Dong Wei Shu
Abstract:In this work analytical solutions are developed to study the free vibration of composite beams under axial loading. The beam with a single...
477
Authors: Zhi Fang Zhang, Krishna Shankar, Murat Tahtali, Evgeny V. Morozov
Abstract:In this paper, a simple graphical method for the detection of delaminations in damaged composite laminates is introduced. By using this...
1410