Imperial College London
Alternate

Dr Soraia Pimenta

Faculty of Engineering, Department of Mechanical Engineering

Reader in Mechanics of Materials and Structures
 
 
 
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Contact

 

+44 (0)20 7594 3784soraia.pimenta Website

 
 
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Location

 

521City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Henry:2017:10.1016/j.compscitech.2017.01.027,
author = {Henry, J and Pimenta, S},
doi = {10.1016/j.compscitech.2017.01.027},
journal = {Composites Science and Technology},
pages = {230--244},
title = {Semi-analytical simulation of aligned discontinuous composites},
url = {http://dx.doi.org/10.1016/j.compscitech.2017.01.027},
volume = {144},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Aligned-discontinuous-fibre reinforced polymers have the potential to combine (i) the high specific stiffness and strength and light weight of conventional continuous-fibre composites with (ii) increased damage tolerance, improved manufacturability, and the ability to close the life-cycle loop of composites by using recycled fibres. However, predicting the mechanical response of discontinuous composites is a challenge for which no universally accepted and computationally-efficient solution exists yet. This paper presents a model for aligned discontinuous-fibre reinforced composites considering (i) a generic constitutive law for the matrix, (ii) stochastic fibre failure under non-uniform stress fields due to the presence of fibre-ends, and (iii) unstable final failure from a critical cluster of damage. Results show good agreement with experiments from the literature, and the model also stresses the importance of considering the stochastic nature of both the fibre-end locations and the fibre-strengths to model aligned discontinuous composites. Parametric studies suggest that failure of aligned discontinuous composites depends on (i) the overlap length between fibres for short-fibre composites, and (ii) the fibre strength for long-fibre composites; intermediate-length fibres would result in discontinuous composites with maximum stiffness, strength, and failure strain simultaneously.
AU  - Henry,J
AU  - Pimenta,S
DO  - 10.1016/j.compscitech.2017.01.027
EP  - 244
PY  - 2017///
SN  - 0266-3538
SP  - 230
TI  - Semi-analytical simulation of aligned discontinuous composites
T2  - Composites Science and Technology
UR  - http://dx.doi.org/10.1016/j.compscitech.2017.01.027
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000401205900028&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.sciencedirect.com/science/article/pii/S0266353816320000
UR  - http://hdl.handle.net/10044/1/49149
VL  - 144
ER  -
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