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{Bullegas:2018:10.1016/j.compscitech.2018.07.004,
author = {Bullegas, G and Benoliel, J and Fenelli, PL and Pinho, ST and Pimenta, S},
doi = {10.1016/j.compscitech.2018.07.004},
journal = {Composites Science and Technology},
pages = {290--306},
title = {Towards Quasi Isotropic laminates with engineered fracture behaviour for industrial applications},
url = {http://dx.doi.org/10.1016/j.compscitech.2018.07.004},
volume = {165},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Carefully placed patterns of micro-cuts have been inserted in the microstructure of Cross-Ply (CP) and Quasi-Isotropic (QI) thin-ply CFRP laminates to engineer their translaminar fracture behaviour with the purpose of increasing their damage resistance under different loading conditions. A novel Finite Fracture Mechanics model has been developed to predict the translaminar crack propagation behaviour and to guide the microstructure design. This technique led to a 68% increase in the laminate notched strength, and a 460% increase in the laminate translaminar work of fracture during Compact Tension tests for CP laminates. It also allowed to achieve a 27% increase in the laminate notched strength, and a 189% increase in the translaminar work of fracture during Compact Tension tests for QI laminates. Furthermore, an increase of 43% in the total energy dissipated, and of 40% in maximum deflection at complete failure was achieved during quasi-static indentation tests on QI laminates. Given the significant improvements in the mechanical performance under different loading conditions, and the industrial relevance of QI laminates and the increasing industrial interest in thin-ply laminates, these results demonstrate that microstructure design can be used effectively to improve the damage tolerance of CFRP structures in industrially-relevant applications.
AU  - Bullegas,G
AU  - Benoliel,J
AU  - Fenelli,PL
AU  - Pinho,ST
AU  - Pimenta,S
DO  - 10.1016/j.compscitech.2018.07.004
EP  - 306
PY  - 2018///
SN  - 0266-3538
SP  - 290
TI  - Towards Quasi Isotropic laminates with engineered fracture behaviour for industrial applications
T2  - Composites Science and Technology
UR  - http://dx.doi.org/10.1016/j.compscitech.2018.07.004
UR  - http://hdl.handle.net/10044/1/61311
VL  - 165
ER  -
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