Non-Linear Fracture Study of Glass Fibre Reinforced Polymer Composites Using a Tapered Double Cantilever Beam

Authors: Rizov, V.¹; Mladensky, A.²

Source: Multidiscipline Modeling in Materials and Structures, Volume 5, Number 4, 2009 , pp. 363-366(4)

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Abstract:

Mode I static fracture behavior of polymer composites is studied using the tapered double cantilever beam test method. A non-linear three-dimensional finite element model is developed to analyze the test data. The fracture toughness is evaluated using a J-integral approach. A non-uniform distribution of the J-integral value along the crack front is obtained with maximum at the mid-plane of the specimen. It is shown that taking into account the damage induced non-linear behavior improves the fracture toughness. This is explained with increased strain energy dissipation as a result of the non-linear behavior.

Keywords: FRACTURE BEHAVIOR; GLASS FIBRE REINFORCED POLYMER COMPOSITE; FINITE ELEMENT ANALYSIS; MATERIAL FAILURE; TAPERED DOUBLE CANTILEVER BEAM

Document Type: Research article

DOI: http://dx.doi.org/10.1163/157361109789807945

Affiliations: 1: Associate Prof., Dr., Department of Technical Mechanics, University of Architecture, Civil Engineering and Geodesy, 1 Chr. Smirnensky blvd., 1046 - Sofia, Bulgaria;, Email: V_RIZOV_FHE@UACG.BG 2: Assistant Prof., Department of Technical Mechanics, University of Architecture, Civil Engineering and Geodesy, 1 Chr. Smirnensky blvd., 1046 - Sofia, Bulgaria

Publication date: 2009-10-01