eprintid: 1433717
rev_number: 26
eprint_status: archive
userid: 608
dir: disk0/01/43/37/17
datestamp: 2014-07-03 18:55:36
lastmod: 2021-11-25 23:34:55
status_changed: 2014-07-03 18:55:36
type: article
metadata_visibility: show
item_issues_count: 0
creators_name: Murat, BIS
creators_name: Khalili, P
creators_name: Fromme, P
title: Guided ultrasonic waves for impact damage detection in composite panels
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F45
note: Copyright 2014 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
abstract: Carbon fiber laminate composites, consisting of layers of polymer matrix reinforced with high strength carbon fibers, are increasingly employed for aerospace structures. They offer advantages for aerospace applications, e.g., good strength to weight ratio. However, impact during the operation and servicing of the aircraft can lead to barely visible and difficult to detect damage. Depending on the severity of the impact, fiber and matrix breakage or delaminations can occur, reducing the load carrying capacity of the structure. Efficient structural health monitoring of composite panels can be achieved using guided ultrasonic waves propagating along the structure. Impact damage was induced in the composite panels using standard drop weight procedures. The guided wave scattering at the impact damage was measured using a noncontact laser interferometer, quantified, and compared to baseline measurements on undamaged composite panels. Significant scattering of the first anti-symmetrical (A0) guided wave mode was observed, allowing for the detection of barely visible impact damage. The guided wave scattering was modeled using full three-dimensional Finite Element (FE) simulations, and the influence of the different damage mechanisms investigated. Good agreement between experiments and predictions was found. The sensitivity of guided waves for the detection of barely visible impact damage in composite panels has been verified. © 2014 SPIE.
date: 2014-03-09
official_url: http://dx.doi.org/10.1117/12.2046309
vfaculties: VENG
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_source: Scopus
elements_id: 960129
doi: 10.1117/12.2046309
lyricists_name: Fromme, Paul
lyricists_id: PFROM09
full_text_status: public
publication: Proceedings of SPIE
volume: 9064
article_number: 906419
issn: 0277-786X
citation:        Murat, BIS;    Khalili, P;    Fromme, P;      (2014)    Guided ultrasonic waves for impact damage detection in composite panels.                   Proceedings of SPIE , 9064     , Article 906419.  10.1117/12.2046309 <https://doi.org/10.1117/12.2046309>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1433717/1/906419.pdf