Measurement of fracture parameters based upon digital image correlation and virtual crack closure techniques

Huo, X; Luo, Q; Li, Q; Sun, G

Measurement of fracture parameters based upon digital image correlation and virtual crack closure techniques

Huo, X Luo, Q

Li, Q Sun, G

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Publisher:: ELSEVIER SCI LTD
Publication Type:: Journal Article
Citation:: Composites Part B: Engineering, 2021, 224
Issue Date:: 2021-11-01

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Field	Value	Language
dc.contributor.author	Huo, X
dc.contributor.author	Luo, Q https://orcid.org/0000-0001-5727-9290
dc.contributor.author	Li, Q
dc.contributor.author	Sun, G
dc.date.accessioned	2022-05-10T03:25:39Z
dc.date.available	2022-05-10T03:25:39Z
dc.date.issued	2021-11-01
dc.identifier.citation	Composites Part B: Engineering, 2021, 224
dc.identifier.issn	1359-8368
dc.identifier.issn	1879-1069
dc.identifier.uri	http://hdl.handle.net/10453/157200
dc.description.abstract	This study aims to develop a novel approach to characterizing fracture parameters of cracked structures made of composite laminates and brittle adhesive joints by using digital image correlation (DIC) and virtual crack closure technique (VCCT). The parameters of mixed-mode fracture can be identified properly using the present method, which allows characterizing the important fracture properties of composite laminates, such as mixed parameter η in the Benzeggagh-Kenane fracture criterion. The energy release rates (ERR) of cracked structure is formulated in a context of linear elastic fracture mechanics (LEFE) based upon DIC measurement, finite element analysis and VCCT. Explicit formulae of energy release rates are derived in terms of the full-field displacements measured from DIC. To verify the effectiveness of the proposed method, the joint specimens are prepared and tested subject to the double cantilever beam, end-notched flexure and single-leg bending conditions, respectively. Energy release rates and fracture toughness for each specimen are obtained by using the proposed approach, which are compared with those obtained from the analytical solutions and finite element analysis (FEA). For showcasing the potential of further applications, the present method is also employed to acquire the fracture parameters of composite laminate, which contains both inter-laminar and intra-laminar fracture modes. The new parametric identification approach exhibits excellent agreement with the other methods. The proposed DIC - VCCT based method demonstrates the effectiveness for determining the energy release rates of various cracked structures.
dc.language	English
dc.publisher	ELSEVIER SCI LTD
dc.relation.ispartof	Composites Part B: Engineering
dc.relation.isbasedon	10.1016/j.compositesb.2021.109157
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	09 Engineering
dc.subject.classification	Materials
dc.title	Measurement of fracture parameters based upon digital image correlation and virtual crack closure techniques
dc.type	Journal Article
utslib.citation.volume	224
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2022-05-10T03:25:36Z
pubs.publication-status	Published
pubs.volume	224

Abstract:

This study aims to develop a novel approach to characterizing fracture parameters of cracked structures made of composite laminates and brittle adhesive joints by using digital image correlation (DIC) and virtual crack closure technique (VCCT). The parameters of mixed-mode fracture can be identified properly using the present method, which allows characterizing the important fracture properties of composite laminates, such as mixed parameter η in the Benzeggagh-Kenane fracture criterion. The energy release rates (ERR) of cracked structure is formulated in a context of linear elastic fracture mechanics (LEFE) based upon DIC measurement, finite element analysis and VCCT. Explicit formulae of energy release rates are derived in terms of the full-field displacements measured from DIC. To verify the effectiveness of the proposed method, the joint specimens are prepared and tested subject to the double cantilever beam, end-notched flexure and single-leg bending conditions, respectively. Energy release rates and fracture toughness for each specimen are obtained by using the proposed approach, which are compared with those obtained from the analytical solutions and finite element analysis (FEA). For showcasing the potential of further applications, the present method is also employed to acquire the fracture parameters of composite laminate, which contains both inter-laminar and intra-laminar fracture modes. The new parametric identification approach exhibits excellent agreement with the other methods. The proposed DIC - VCCT based method demonstrates the effectiveness for determining the energy release rates of various cracked structures.

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http://hdl.handle.net/10453/157200