Data of: "Estimating the mode I through-thickness intralaminar R-curve of unidirectional carbon fibre-reinforced polymers using a micromechanics framework combined with the size effect method"

Published: 9 May 2022| Version 1 | DOI: 10.17632/z8x2hnpmhy.1


A three-dimensional micromechanics framework is developed to estimate the mode I through-thickness intralaminar crack resistance curve of unidirectional carbon fibre-reinforced polymers. Finite element models of geometrically-scaled single edge notch tension specimens were generated. These were modelled following a combined micro-/meso-scale approach, where the region at the vicinity of the crack tip describes the actual microstructure of the material, while the regions far from the crack tip represent the mesoscopic linear-elastic behaviour of the composite, whose properties were obtained using computational homogenisation. This work presents a novel methodology to estimate fracture properties of composite materials by combining computational micromechanics with the size effect method. The advantages of using unstable crack propagation specimens from a numerical modelling perspective are emphasised, where the size effect law of the material, and consequently the crack resistance curve, are estimated through the numerically calculated peak stresses. In-depth parametric analyses, which are hard to conduct empirically, are undertaken, allowing for quantitative and qualitative comparisons to be successfully made with experimental and numerical observations taken from literature.



Universidade de Evora, RMIT University, University of Bristol, Universidade do Porto Faculdade de Engenharia