Mode I intralaminar fracture toughness of 2D woven carbon fibre reinforced composites: A comparison of stable and unstable crack propagation techniques

Denis Dalli; Brian Falzon; Giuseppe Catalanotti; Luis Varandas; Steve Foster

doi:10.1016/j.engfracmech.2019.04.003

Mode I intralaminar fracture toughness of 2D woven carbon fibre reinforced composites: A comparison of stable and unstable crack propagation techniques

Denis Dalli, Brian Falzon, Giuseppe Catalanotti, Luis Varandas, Steve Foster

School of Mechanical and Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

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Abstract

This paper presents an experimental and numerical comparison of stable and unstable crack propagation techniques used to measure the mode I intralaminar fracture toughness of 2D woven carbon fibre composites. Compact Tension (CT) and Double Edge Notch Tension (DENT) specimens are used for the stable and unstable experimental tests, respectively. The precrack tip radius sensitivity of the scaled DENT specimens is investigated, concluding that the tested tip radii do not substantially affect the measured fracture toughness. The fracture toughness data obtained from the DENT and CT specimens are found to be in good agreement for both tested materials.

Original language	English
Journal	Engineering Fracture Mechanics
Early online date	10 Apr 2019
DOIs	https://doi.org/10.1016/j.engfracmech.2019.04.003
Publication status	Early online date - 10 Apr 2019

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Mode I intralaminar fracture toughness of 2D woven carbon fibre reinforced composites: A comparison of stable and unstable crack propagation techniques
Copyright 2019 Elsevier. This manuscript is distributed under a Creative Commons Attribution-NonCommercial-NoDerivs License (https://creativecommons.org/licenses/by-nc-nd/4.0/), which permits distribution and reproduction for non-commercial purposes, provided the author and source are cited
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Experimental and numerical developments in predicting the crashworthiness of Formula One composite structures
Dalli, D. (Author), Falzon, B. (Supervisor) & Catalanotti, G. (Supervisor), Jul 2020
Student thesis: Doctoral Thesis › Doctor of Philosophy

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High-resolution numerical models for damage assessment in composite materials
Varandas, L. (Author), Falzon, B. (Supervisor) & Catalanotti, G. (Supervisor), Dec 2020
Student thesis: Doctoral Thesis › Doctor of Philosophy

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Cite this

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title = "Mode I intralaminar fracture toughness of 2D woven carbon fibre reinforced composites: A comparison of stable and unstable crack propagation techniques",

abstract = "This paper presents an experimental and numerical comparison of stable and unstable crack propagation techniques used to measure the mode I intralaminar fracture toughness of 2D woven carbon fibre composites. Compact Tension (CT) and Double Edge Notch Tension (DENT) specimens are used for the stable and unstable experimental tests, respectively. The precrack tip radius sensitivity of the scaled DENT specimens is investigated, concluding that the tested tip radii do not substantially affect the measured fracture toughness. The fracture toughness data obtained from the DENT and CT specimens are found to be in good agreement for both tested materials.",

author = "Denis Dalli and Brian Falzon and Giuseppe Catalanotti and Luis Varandas and Steve Foster",

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AU - Dalli, Denis

AU - Falzon, Brian

AU - Catalanotti, Giuseppe

AU - Varandas, Luis

AU - Foster, Steve

PY - 2019/4/10

Y1 - 2019/4/10

N2 - This paper presents an experimental and numerical comparison of stable and unstable crack propagation techniques used to measure the mode I intralaminar fracture toughness of 2D woven carbon fibre composites. Compact Tension (CT) and Double Edge Notch Tension (DENT) specimens are used for the stable and unstable experimental tests, respectively. The precrack tip radius sensitivity of the scaled DENT specimens is investigated, concluding that the tested tip radii do not substantially affect the measured fracture toughness. The fracture toughness data obtained from the DENT and CT specimens are found to be in good agreement for both tested materials.

AB - This paper presents an experimental and numerical comparison of stable and unstable crack propagation techniques used to measure the mode I intralaminar fracture toughness of 2D woven carbon fibre composites. Compact Tension (CT) and Double Edge Notch Tension (DENT) specimens are used for the stable and unstable experimental tests, respectively. The precrack tip radius sensitivity of the scaled DENT specimens is investigated, concluding that the tested tip radii do not substantially affect the measured fracture toughness. The fracture toughness data obtained from the DENT and CT specimens are found to be in good agreement for both tested materials.

U2 - 10.1016/j.engfracmech.2019.04.003

DO - 10.1016/j.engfracmech.2019.04.003

M3 - Article

SN - 0013-7944

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

ER -

Mode I intralaminar fracture toughness of 2D woven carbon fibre reinforced composites: A comparison of stable and unstable crack propagation techniques

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Student theses

Experimental and numerical developments in predicting the crashworthiness of Formula One composite structures

High-resolution numerical models for damage assessment in composite materials

Cite this