Journal ArticleDOI
Identification of subsurface delaminations in composite laminates
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TLDR
In this article, the authors presented a novel procedure for the identification of delaminations in composite laminated panels from surface displacement measurements, where the damage identification procedure is formulated as an inverse problem where experimental data from digital speckle pattern interferometry (DSPI) out-of-plane displacement measurements are used to quantify the planar location, size, orientation and depth of the flaw.About:
This article is published in Composites Science and Technology.The article was published on 2007-10-01. It has received 28 citations till now. The article focuses on the topics: Composite laminates.read more
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On the use of in-situ piezoelectric sensors for the manufacturing and structural health monitoring of polymer-matrix composites: A literature review
TL;DR: In this paper, a general overview of what has been achieved recently in the scientific community on the manufacturing monitoring and structural health monitoring of polymer-matrix composites (PMC) using in-situ piezoelectric sensors is provided.
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Full field measurements and identification in Solid Mechanics Depth-resolved Phase Imaging
TL;DR: In this paper, a theoretical framework based on the Ewald sphere construction is proposed to estimate the depth resolution and displacement sensitivity for any given optical geometry and wavelength scan range, and the related issue of robust phase unwrapping of noisy 3-D wrapped phase volumes is also described.
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Identification of the local stiffness reduction of a damaged composite plate using the virtual fields method
TL;DR: In this paper, the virtual fields method (VFM) is used as an inverse procedure to process curvatures for the identification of the local loss of stiffness, which is based on a relevant use of the equilibrium equations through the principle of virtual work.
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A Hybrid Particle Swarm Optimization (PSO)-Simplex Algorithm for Damage Identification of Delaminated Beams
TL;DR: In this paper, a hybrid optimization algorithm (HOA), combining particle swarm optimization (PSO) with simplex method (SM), is proposed to identify delamination in laminated beams.
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Detection of delamination in laminated composites with limited measurements combining PCA and dynamic QPSO
TL;DR: Studies carried out and presented in this paper clearly indicate that the proposed SHM scheme can robustly identify the instant of damage, spatial location, the extent of delamination and matrix cracking even with limited sensor measurements and also with noisy data.
References
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Journal ArticleDOI
Visual pattern recognition by moment invariants
TL;DR: It is shown that recognition of geometrical patterns and alphabetical characters independently of position, size and orientation can be accomplished and it is indicated that generalization is possible to include invariance with parallel projection.
Image analysis by moments
Miroslaw Pawlak,Simon Liao +1 more
TL;DR: The detailed error analysis involved in the moment method is discussed and several new techniques to increase the accuracy and efficiency of moment descriptor are proposed for image reconstruction from the orthogonal Legendre moments computed from discrete and noisy data.
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Ultimate axial load capacity of a delaminated beam-plate
TL;DR: In this article, elastic buckling and postbuckling analysis of an axially loaded beam-plate with an across-the-width delamination symmetrically located at an arbitrary depth is presented.
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Buckling of a sublaminate in a quasi-isotropic composite laminate
TL;DR: In this paper, the buckling of an elliptic delamination embedded near the surface of a thick quasi-isotropic laminate was predicted using finite element and Rayleigh-Ritz methods.