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Mode I Interlaminar Fracture Toughness of Through-Thickness Reinforced Laminated Structures
Advanced Materials Research, 2011The main objective of the study is to understand the mechanisms of the preform reinforcement (2D, stitched and 2.5D) in laminated composite materials. The study is focusing on the mode I interlaminar fracture toughness for glass/vinylester based composites.
Tarfaoui, Mostapha, Hamitouche, Lotfi
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Analytical compliance method for Mode I interlaminar fracture toughness testing of composites
Composites, 1987Abstract An analytical compliance method has been successfully applied to Mode I interlaminar fracture toughness tests for laminated composites. A new double cantilever beam (DCB) specimen was designed to measure load-line crack opening displacement with high accuracy, and an interpolation function proposed to calculate the crack length and the ...
K. Kageyama, T. Kobayashi, T.-W. Chou
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Experimental Investigation of Mode I Interlaminar Fracture Toughness in T300/914 Composite
Materials Today: Proceedings, 2020Abstract An aerospace structural material T300/914 has been studied to understand the Mode I interlaminar fracture toughness. For experimental analysis a Double Cantilever Beam (DCB) test is conducted on the laminate to estimate the Mode I interlaminar fracture toughness of the sample.
S. Sachin +3 more
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1993
Static and fatigue double-cantilever beam (DCB) and end-notch flexure (ENF) tests were conducted to determine the effect of the simulated initial delamination on interlaminar fracture toughness, Gc, and fatigue fracture threshold, Gth. Unidirectional, 24-ply specimens of S2/SP250 glass/epoxy were tested with Kapton inserts at the midplane at one end to
GB Murri, RH Martin
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Static and fatigue double-cantilever beam (DCB) and end-notch flexure (ENF) tests were conducted to determine the effect of the simulated initial delamination on interlaminar fracture toughness, Gc, and fatigue fracture threshold, Gth. Unidirectional, 24-ply specimens of S2/SP250 glass/epoxy were tested with Kapton inserts at the midplane at one end to
GB Murri, RH Martin
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Prediction of Mode I interlaminar fracture toughness of stitched flax fiber composites
Journal of Materials Science, 2017This paper aims to propose a simulation procedure to predict the interlaminar fracture toughness of stitched flax fiber composites through a virtual double cantilever beam test. The proposed procedure is constituted of two steps. First, the interlaminar failure of unstitched flax fiber laminate, as the parent laminate, is modeled using cohesive ...
M. Ravandi +3 more
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Mode I interlaminar fracture toughness properties of advanced textile fibreglass composites
Composites Part A: Applied Science and Manufacturing, 1999Abstract The Mode I interlaminar fracture toughness properties of vinyl ester-based composites reinforced with fibreglass manufactured by the advanced textile technologies of braiding, knitting, stitching and through-the-thickness weaving are assessed in comparison to a variety of traditional composites made from fibreglass such as unidirectional or ...
A.P Mouritz, C Baini, I Herszberg
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Materials Testing
Abstract The influence of stitching on the delamination resistance of unidirectional glass fiber-reinforced plastic laminates depends strongly on the loading mode. The application of a lock stitch with a stitch density of 3.4 cm−1 perpendicular to the fibers results in an increase of the interlaminar fracture toughness energy, mode I, G
Simon Backens +2 more
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Abstract The influence of stitching on the delamination resistance of unidirectional glass fiber-reinforced plastic laminates depends strongly on the loading mode. The application of a lock stitch with a stitch density of 3.4 cm−1 perpendicular to the fibers results in an increase of the interlaminar fracture toughness energy, mode I, G
Simon Backens +2 more
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Evaluation of Mode I interlaminar fracture toughness in asymmetric interlayer in CFRP laminates
Advanced Composite Materials, 2019Assuming the interlaminar failure in quasi-isotropic laminates, we evaluated the Mode I interlaminar fracture in asymmetric 0°/45° interlayer.
Hiroshi Saito +2 more
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Round Robin Testing for Mode I Interlaminar Fracture Toughness of Composite Materials
Journal of Composites Technology and Research, 1993This report summarizes the results of several interlaboratory “round robin” test programs for measuring the Mode I interlaminar fracture toughness of advanced fiber-reinforced composite materials. Double cantilever beam (DCB) tests were conducted by participants in ASTM Committee D-30 on High Modulus Fibers and Their Composites and by representatives ...
WS Johnson +4 more
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2019
The present paper devised two novel methods to measure the mode I and mixed modes I/II fracture toughness for composite materials. A double compliance method is proposed for the mode I interlaminar fracture. Only the load and displacement recorded from the test machine are required for the determination of the fracture toughness.
W. Xu, Z. Z. Guo, Y. Yu, X. J. Zhang
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The present paper devised two novel methods to measure the mode I and mixed modes I/II fracture toughness for composite materials. A double compliance method is proposed for the mode I interlaminar fracture. Only the load and displacement recorded from the test machine are required for the determination of the fracture toughness.
W. Xu, Z. Z. Guo, Y. Yu, X. J. Zhang
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