Imperial College London

Prof Milo Shaffer

Faculty of Natural SciencesDepartment of Chemistry

Professor of Materials Chemistry



+44 (0)20 7594 5825m.shaffer Website




Mr John Murrell +44 (0)20 7594 2845




M221Royal College of ScienceSouth Kensington Campus






BibTex format

author = {Stanier, D and Radhakrishnan, A and Gent, I and Roy, SS and Hamerton, I and Potluri, P and Scarpa, F and Shaffer, M and Ivanov, DS},
doi = {10.1016/j.compstruct.2018.09.019},
journal = {Composite Structures},
pages = {72--80},
title = {Matrix-graded and fibre-steered composites to tackle stress concentrations},
url = {},
volume = {207},
year = {2019}

RIS format (EndNote, RefMan)

AB - This paper studies the feasibility of improving structural performance of composites in the presence of stress concentrators. Matrix grading through local deposition of additive-enhanced matrices and fibre steering by varying fibrous architecture are examined independently and in combination on a glass-fibre triaxial braided composite subjected to open hole tensile test. Stiffened and toughened matrices were incorporated through precise point-wise injections of liquid reactive resin into dry preforms (Liquid Resin Printing). Fibre steering was implemented by varying the braiding angle along the length of the braided sleeve. It has been shown that these novel forms of architecture modification enable a significant improvement in composite strength through a variety of deformation mechanisms. This includes local stiffening of composite in the direct vicinity of the stress concentrator and damage accumulation away from the stress concentrators. The experimental observations are explained by using simple finite-element models.
AU - Stanier,D
AU - Radhakrishnan,A
AU - Gent,I
AU - Roy,SS
AU - Hamerton,I
AU - Potluri,P
AU - Scarpa,F
AU - Shaffer,M
AU - Ivanov,DS
DO - 10.1016/j.compstruct.2018.09.019
EP - 80
PY - 2019///
SN - 0263-8223
SP - 72
TI - Matrix-graded and fibre-steered composites to tackle stress concentrations
T2 - Composite Structures
UR -
UR -
UR -
VL - 207
ER -