A semi-analytical method for measuring the strain energy release rates of elliptical cracks

Mohammad Burhan, Tommaso Scalici, Zahur Ullah, Zafer Kazancı, Brian Falzon, Giuseppe Catalanotti

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

In this study, a fracture mechanics analysis is presented to address the concern of delamination propagation at the interface of a bi-material laminate. In general, the energy release rate at the crack front is the fracture parameter required to study the propagation of cracks. A new three-dimensional finite element technique, for the evaluation of the energy release rate along the interfacial semi-elliptical crack front in hybrid composite-metal substrates, is presented. Using a non-dimensional correction factor, the related equation expresses the normalized energy release rate. A non-dimensional function with non-dimensionalized functional groups is utilized to investigate the effects of several factors. These factors include the variation in material stiffness between layers, the relative thickness of the two substrates at whose interface the analysis is performed, and the effects of two semi-axes of a semielliptical crack on the analysis of the correction factor. These non-dimensional function values were derived by employing a careful interpolation technique on a set of finite element solutions, yielding predictions that exhibit accuracy within acceptable range of numerical results.

Original languageEnglish
Title of host publicationProceedings of the 23rd International Conference on Composite Materials, ICCM23
EditorsBrian Falzon, Conor McCarthy
PublisherQueen's University Belfast
Number of pages10
Publication statusPublished - 30 Jul 2023
Event23rd International Conference on Composite Materials 2023 - Belfast, United Kingdom
Duration: 31 Jul 202304 Aug 2023
https://www.iccm-central.org/Proceedings/ICCM23proceedings/index.htm (Conference proceedings)
https://iccm23.org/

Conference

Conference23rd International Conference on Composite Materials 2023
Abbreviated titleICCM23
Country/TerritoryUnited Kingdom
CityBelfast
Period31/07/202304/08/2023
Internet address

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