A novel technique for time-resolved detection and tracking of interfacial and matrix fracture in layered materials

Minnaar, Karel; Zhou, Min

doi:10.1016/j.jmps.2004.05.006

Cited by 13 publications

(8 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Once damage is initiated in a cohesive element, the interface follows the mixed-mode fracture criterion [32] (details about the CFEM approach presented here can be found in Refs. [33][34][35][36]). After failure of cohesive elements, contact between bulk elements leads to frictional sliding.…”

Section: Numerical Frameworkmentioning

confidence: 99%

Response of Cylindrical Composite Structures Subjected to Underwater Impulsive Loading: Experimentations and Computations

Avachat

Zhou

2017

Journal of Engineering Materials and Technology

View full text Add to dashboard Cite

The dynamic response of both thick-walled and thin-walled cylindrical composite structures subjected to underwater impulsive loads is analyzed. In the case of thick-walled structures, a novel experimental setup, the underwater shock loading simulator (USLS), is used to generate the impulsive loads. Deflection and core compression are characterized using high-speed digital imaging. The experiments are supported by fully dynamic numerical calculations which account for fluid–structure interactions (FSIs) and damage and failure mechanisms in the materials. The analysis focuses on the effect of varying structural attributes and material properties on load-carrying capacity, deformation mechanisms, and damage. Results show that cylindrical sandwich structures have superior blast-resistance than cylindrical monolithic structures of equal mass with only relatively minor increases in wall thickness. In the case of thin-walled structures, a unique computational framework based on a coupled Eulerian–Lagrangian (CEL) approach is developed to study the structural collapse and damage evolution under large impulsive loads which induces an implosion event. Simulations are carried out for a range of hydrostatic pressure and impulsive load intensity, with different loading configurations. Ply level stress analysis provides an insight on the stress–structural deformation–damage evolution relationship during the severe explosion-induced implosion event. The experiments, computations, and structure–performance relations developed in the current study offer approaches for improving the blast-mitigation capabilities of cylindrical composite sections in critical parts of marine structures, such as the keel, hull, and pipes.

show abstract

Section: Numerical Frameworkmentioning

confidence: 99%

Response of Cylindrical Composite Structures Subjected to Underwater Impulsive Loading: Experimentations and Computations

Avachat

Zhou

2017

Journal of Engineering Materials and Technology

View full text Add to dashboard Cite

show abstract

“…On peut également citer des techniques qui utilisent l'interférométrie laser ((Minnaar et al, 2004)...) ou des capteurs piézo-électriques ( (Yan et al, 2002)...).…”

Section: Synthèse Bibliographiqueunclassified

Détection d'endommagement dans les composites fibres/résine à l'aide de la technologie micro-onde

Rossignol¹,

Thionnet²

2006

Revue des composites et des matériaux avancés

View full text Add to dashboard Cite

“…In order to reduce the costs of samplings and experiments, and enhance the image resolution, many researchers (Laroque et al, 2008;Batenburg and Sijbers, 2011;Sheppard and Shan, 2010) proposed different algorithms to improve diffraction tomography. In the inverse problems, other approaches were given, which were suitable for different models, such as eddy current methods (Dobson and Santosa, 1998), time reversal (Minnaar and Zhou, 2004) and modal power flow (Wang et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

A novel approach to surface defect detection

Dong

Wang

et al. 2018

International Journal of Engineering Science

View full text Add to dashboard Cite

Defects or flaws in highly loaded structures have a significant impact on the structural integrity. Early inspection of faults can reduce the likelihood of occurrence of potential disasters and limit the damaging effects of destructions. According to our previous work, a novel approach called as Quantitative Detection of Fourier Transform (QDFT) using guided ultrasonic waves is developed in this paper for efficiently detecting defects in pipeline structures. Details of this fast method consist of three steps: First, an in-house finite element code has been developed to calculate reflection coefficients of guided waves travelling in the pipe. Then, based on boundary integral equations and Fourier transform of space-wavenumber domain, theoretical formulations of the quantitative detection are derived as a function of wavenumber using Born approximation. This lays a solid foundation for QDFT method, in which a reference model in a problem with a known defect is utilized to effectively evaluate the unknown defects. Finally, the location and shape of the unknown defect are reconstructed using signal processing for noise removal. Several examples are presented to demonstrate the correctness and efficiency of the proposed methodology. It is concluded that the general two-dimensional surface defects can be detected with high level of accuracy by this fast approach.

show abstract

A novel technique for time-resolved detection and tracking of interfacial and matrix fracture in layered materials

Cited by 13 publications

References 45 publications

Response of Cylindrical Composite Structures Subjected to Underwater Impulsive Loading: Experimentations and Computations

Response of Cylindrical Composite Structures Subjected to Underwater Impulsive Loading: Experimentations and Computations

Détection d'endommagement dans les composites fibres/résine à l'aide de la technologie micro-onde

A novel approach to surface defect detection

Contact Info

Product

Resources

About