Imperial College London
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Professor Emile S Greenhalgh

Faculty of Engineering, Department of Aeronautics

Professor of Composite Materials
 
 
 
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Contact

 

+44 (0)20 7594 5070e.greenhalgh CV

 
 
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Location

 

334City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Yu:2023:10.1098/rsta.2021.0220,
author = {Yu, B and Katafiasz, TJ and Nguyen, S and Allegri, G and Finlayson, J and Greenhalgh, ES and Pinho, ST and Pimenta, S},
doi = {10.1098/rsta.2021.0220},
journal = {Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences},
title = {Characterising and predicting the relationship between  translaminar fracture toughness and pull-out length distributions  under distinct temperatures},
url = {http://dx.doi.org/10.1098/rsta.2021.0220},
volume = {381},
year = {2023}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The translaminar fracture toughness reflects the damage tolerance of a fibre-reinforced composite under longitudinal tension, which often governs the final failure of structures. One of the main energy-dissipation mechanisms that contributes to the translaminar toughness of composites is the fibre pull-out process. The present study aims to quantify and model the statistical distribution of fibre pull-out lengths formed on the translaminar fracture surface of composites, for the first time in the literature; this is done under different temperatures, so that the relationship between pull-out length distributions, micromechanical properties and the translaminar fracture toughness can be established. The fracture surfaces of cross-ply compact tension specimens tested under three different temperatures have been scanned through X-ray computed tomography to quantify the extent of fibre pull-out on the fracture surfaces; the distribution of pull-out lengths showed alarger average and larger variability with an increase in temperature, which also lead to an increase in translaminar fracture toughness. A similar trend has been captured by the proposed analytical model, which predicts the pull-out length distribution based on the analysis of quasi-fractal idealizations of the fracture surface, yielding an overall accuracy of more than 85%.This article is part of the theme issue 'Ageing and durability of composite materials'.
AU  - Yu,B
AU  - Katafiasz,TJ
AU  - Nguyen,S
AU  - Allegri,G
AU  - Finlayson,J
AU  - Greenhalgh,ES
AU  - Pinho,ST
AU  - Pimenta,S
DO  - 10.1098/rsta.2021.0220
PY  - 2023///
SN  - 1364-503X
TI  - Characterising and predicting the relationship between  translaminar fracture toughness and pull-out length distributions  under distinct temperatures
T2  - Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
UR  - http://dx.doi.org/10.1098/rsta.2021.0220
UR  - http://hdl.handle.net/10044/1/100555
VL  - 381
ER  -
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