Identification of the local stiffness reduction of a damaged composite plate using the virtual fields method

J.-H. Kim; F. Pierron; M. R. Wisnom; K. Syed-Muhamad

doi:10.1016/j.compositesa.2007.04.006

Identification of the local stiffness reduction of a damaged composite plate using the virtual fields method

J.-H. Kim^*, F. Pierron, M. R. Wisnom, K. Syed-Muhamad

^*Corresponding author for this work

Bristol Composites Institute

Research output: Contribution to journal › Article (Academic Journal) › peer-review

61 Citations (Scopus)

Abstract

In the present study, a damage detection problem is formulated as the identification of the spatial stiffness distribution in a damaged composite plate. Full-field heterogeneous curvature fields obtained from an optical deflectometry technique are processed by using the virtual fields method adapted to retrieve the 2D stiffness distribution map of a damaged carbon-epoxy plate. The method not only picks up the location of the damage but also provides a fairly good estimate of the stiffness reduction in the damaged area. In this paper, the procedure is described, validated on simulated measurements and some initial experimental results are given. (c) 2007 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	2065-2075
Number of pages	11
Journal	Composites Part A: Applied Science and Manufacturing
Volume	38
Issue number	9
DOIs	https://doi.org/10.1016/j.compositesa.2007.04.006
Publication status	Published - 2007

Keywords

ANISOTROPIC PLATES
MATERIAL PARAMETERS
damage mechanics
IMPACT DAMAGE
delamination
non-destructive testing
VIBRATING PLATES
optical properties/techniques

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@article{c2373b1506a149039a8dcf25dcccc3ef,

title = "Identification of the local stiffness reduction of a damaged composite plate using the virtual fields method",

abstract = "In the present study, a damage detection problem is formulated as the identification of the spatial stiffness distribution in a damaged composite plate. Full-field heterogeneous curvature fields obtained from an optical deflectometry technique are processed by using the virtual fields method adapted to retrieve the 2D stiffness distribution map of a damaged carbon-epoxy plate. The method not only picks up the location of the damage but also provides a fairly good estimate of the stiffness reduction in the damaged area. In this paper, the procedure is described, validated on simulated measurements and some initial experimental results are given. (c) 2007 Elsevier Ltd. All rights reserved.",

keywords = "ANISOTROPIC PLATES, MATERIAL PARAMETERS, damage mechanics, IMPACT DAMAGE, delamination, non-destructive testing, VIBRATING PLATES, optical properties/techniques",

author = "J.-H. Kim and F. Pierron and Wisnom, \{M. R.\} and K. Syed-Muhamad",

year = "2007",

doi = "10.1016/j.compositesa.2007.04.006",

language = "English",

volume = "38",

pages = "2065--2075",

journal = "Composites Part A: Applied Science and Manufacturing",

issn = "1359-835X",

publisher = "Elsevier Limited",

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}

TY - JOUR

T1 - Identification of the local stiffness reduction of a damaged composite plate using the virtual fields method

AU - Kim, J.-H.

AU - Pierron, F.

AU - Wisnom, M. R.

AU - Syed-Muhamad, K.

PY - 2007

Y1 - 2007

N2 - In the present study, a damage detection problem is formulated as the identification of the spatial stiffness distribution in a damaged composite plate. Full-field heterogeneous curvature fields obtained from an optical deflectometry technique are processed by using the virtual fields method adapted to retrieve the 2D stiffness distribution map of a damaged carbon-epoxy plate. The method not only picks up the location of the damage but also provides a fairly good estimate of the stiffness reduction in the damaged area. In this paper, the procedure is described, validated on simulated measurements and some initial experimental results are given. (c) 2007 Elsevier Ltd. All rights reserved.

AB - In the present study, a damage detection problem is formulated as the identification of the spatial stiffness distribution in a damaged composite plate. Full-field heterogeneous curvature fields obtained from an optical deflectometry technique are processed by using the virtual fields method adapted to retrieve the 2D stiffness distribution map of a damaged carbon-epoxy plate. The method not only picks up the location of the damage but also provides a fairly good estimate of the stiffness reduction in the damaged area. In this paper, the procedure is described, validated on simulated measurements and some initial experimental results are given. (c) 2007 Elsevier Ltd. All rights reserved.

KW - ANISOTROPIC PLATES

KW - MATERIAL PARAMETERS

KW - damage mechanics

KW - IMPACT DAMAGE

KW - delamination

KW - non-destructive testing

KW - VIBRATING PLATES

KW - optical properties/techniques

U2 - 10.1016/j.compositesa.2007.04.006

DO - 10.1016/j.compositesa.2007.04.006

M3 - Article (Academic Journal)

SN - 1359-835X

VL - 38

SP - 2065

EP - 2075

JO - Composites Part A: Applied Science and Manufacturing

JF - Composites Part A: Applied Science and Manufacturing

IS - 9

ER -

Identification of the local stiffness reduction of a damaged composite plate using the virtual fields method

Abstract

Keywords

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