Entity

Time filter

Source Type

Quorn, United Kingdom

Dhiman S.,University of Manchester | Potluri P.,University of Manchester | Silva C.,M. Wright and Sons Ltd
Composite Structures | Year: 2015

3D woven composites have the potential to revolutionise structural composites, provided the knock-down in in-plane properties can be minimised through weave optimisation. Since binder tow interactions produce waviness in warp and weft tows, 3D weaving process needs optimisation. This paper presents a predictive modelling tool based on Representative Volume Elements (RVEs) of 3D weaves capturing the binder size as a function of the weaving process. Implemented in Abaqus, this predictive tool is able to predict elastic constants and strength with a reasonable accuracy compared to experimental data. © 2015 Elsevier Ltd. Source


Dai S.,Loughborough University | Cunningham P.R.,Loughborough University | Marshall S.,M. Wright and Sons Ltd | Silva C.,M. Wright and Sons Ltd
Composites Part A: Applied Science and Manufacturing | Year: 2014

This paper presents a comprehensive study on the tensile, compressive, and flexural performance of six types of 3D woven carbon-fibre/epoxy composites which were manufactured using a traditional narrow fabric weaving loom and resin transfer moulding. Four orthogonal and two angle-interlock weaves were tested with the primary loading direction parallel to the warp direction. The mechanical performance was found to be affected by the distribution of resin rich regions and the waviness of the load-carrying fibres, which were determined by the fibre architectures. The binding points within the resin rich regions were found to be the damage initiation sites in all weave types under all loading conditions, which were confirmed with both visual observation and digital image correlation strain maps. Among all weave types, the angle interlock weave W-3 exhibited the highest properties under all loading conditions. © 2014 The Authors. Published by Elsevier Ltd. Source


Dai S.,Loughborough University | Cunningham P.R.,Loughborough University | Marshall S.,M. Wright and Sons Ltd | Silva C.,M. Wright and Sons Ltd
Composite Structures | Year: 2015

This paper presents a comprehensive study on the open-hole quasi-static tensile and tension-tension fatigue behaviour of an orthogonal and an angle-interlock 3D woven carbon/epoxy composite. The full-field strain distribution during quasi-static tests was characterised using digital image correlation (DIC), and the fatigue damage behaviour was monitored using an infra-red camera. The notched tensile strength was less than 17% lower than the un-notched tensile strength and not very sensitive to the notch size. The fatigue specimens were loaded with maximum stress of about 60% of the ultimate failure stress and no complete fracture occurred after 5,000,000 cycles. The residual fatigue strength was also found to be similar to the quasi-static tensile strength in both weaves. The surface crack initiation and progression during fatigue loading was identified using thermoelastic stress analysis which revealed that the orthogonal weave had larger surface damage area than the angle-interlock weave. © 2015 Elsevier Ltd. Source

Discover hidden collaborations