Share Email Print
cover

Proceedings Paper

Impact damage detection in composite structures using Lamb waves
Author(s): Ajit K. Mal; Frank J. Shih; Fabrizio Ricci; Sauvik Banerjee
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

This paper is concerned with the detection of low velocity impact and the associated internal damage in composite structures using Lamb waves. Impact tests are carried out on a cross ply graphite epoxy plate using an instrumented impact testing system. The contact force and the surface motion caused by the impact load are recorded at several points on the plate surface away from the impact location and are analyzed based on theoretical simulations. The Lamb waves generated by the impact load and internal damage to the plate caused by it are shown to be highly effective tools for damage detection in laboratory specimens. Ultrasonic and impact tests are also conducted on a stiffened, woven composite panel in an effort to examine the propagation characteristics of ultrasonic waves in realistic composite structural components. Preliminary analysis of the recorded waveforms indicates that Lamb waves can be used to interrogate relatively large composite structures.

Paper Details

Date Published: 9 May 2005
PDF: 9 pages
Proc. SPIE 5768, Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems IV, (9 May 2005); doi: 10.1117/12.600566
Show Author Affiliations
Ajit K. Mal, Univ. of California/Los Angeles (United States)
Frank J. Shih, Seattle Univ. (United States)
Fabrizio Ricci, Univ. of Naples Federico II (Italy)
Sauvik Banerjee, Univ. of California/Los Angeles (United States)


Published in SPIE Proceedings Vol. 5768:
Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems IV
Tribikram Kundu, Editor(s)

© SPIE. Terms of Use
Back to Top