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  4. Low energy impact damage monitoring of composites using dynamic strain signals from FBG sensors - Part II: Damage identification
 
research article

Low energy impact damage monitoring of composites using dynamic strain signals from FBG sensors - Part II: Damage identification

Frieden, Jeannot  
•
Cugnoni, Joel  
•
Botsis, John  
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2012
Composite Structures

In part I of this two-paper series, a method for the localization of an impact using dynamic strain signals from fiber Bragg grating (FBG) sensors is presented. In this paper, an inverse numerical-experimental method allowing to identify the damage based on experimentally measured eigenfrequency changes is developed and validated. The damage identification is limited to a region in the vicinity of the impact position predicted by the localization method. The eigenfrequency changes are determined experimentally from dynamic strain signals obtained with embedded FBG sensors and the parameters of a homogenized damage model are adjusted to fit the numerical results to the experimental data. (C) 2011 Elsevier Ltd. All rights reserved.

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Type
research article
DOI
10.1016/j.compstruct.2011.08.025
Web of Science ID

WOS:000298362600031

Author(s)
Frieden, Jeannot  
Cugnoni, Joel  
Botsis, John  
Gmuer, Thomas  
Date Issued

2012

Published in
Composite Structures
Volume

94

Start page

593

End page

600

Subjects

Low energy impact

•

FBG sensor

•

CFRP composite

•

Delamination damage

•

Identification

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LMAF  
Available on Infoscience
February 9, 2012
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/77643
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