Fracture toughness of the tensile and compressive fibre failure modes in laminated composites

By S. Pinho, P. Robinson, L. Iannucci. 2006

634 citations recorded by the source corpus.

Abstract The fracture toughnesses associated with fibre tensile failure and compressive fibre kinking in a T300/913 carbon-epoxy laminated composite are measured using compact tension and ‘compact compression’ tests respectively. The specimen strain fields were monitored using a digital speckle photogrammetry system during the tests. The damage present in the specimens after the tests was investigated using C-scan and optical and scanning electron microscopy. The initiation and propagation values of the tensile fibre failure critical energy release rate were determined as 91.6 kJ/m 2 and 133 kJ/m 2 respectively. For fibre compressive kinking, an initiation value of 79.9 kJ/m 2 was obtained, but no meaningful propagation values could be determined. In both cases, the test results showed low scatter.

Subfields: Computer Vision and Pattern Recognition, Mechanical Engineering, Mechanics of Materials

View Paper: https://www.semanticscholar.org/paper/4739c6fb59495355c4f4354aedeec0b7dcf951b6

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In Computer Vision and Pattern Recognition

In Mechanical Engineering

In Mechanics of Materials

Citations in the corpus

Numerical analysis of intralaminar failure mechanisms in composite structures, Part I: FE implementation (2011, methodology): “Different number of specimens and crack geometries are available in the literature to characterise the intralaminar fracture behaviour of composite fibre-failure modes [15–17].”
A micromechanical model for kink-band formation: Part II—Analytical modelling (2009, methodology): “This agrees with the well-known fact that the longitudinal compressive strength of UD CFRP is highly dependent on the manufacturing process and material defects.”
Measurement of resistance curves in the longitudinal failure of composites using digital image correlation (2010, positive): “[14] and that obtained by post-processing the displacement and strain fields measured by the DIC system.”
Low velocity impact modeling in composite laminates capturing permanent indentation (2012, positive): “1), it can be observed that the t and kt are the only two parameters directly determined using the impact test: all other values come from conventional experimental tests presented in the literature [31,32,37,38,41].”
Progressive damage modeling of open-hole composite laminates under compression (2015, background): “[24] reported a even higher compressive fracture toughness of 79.”