All Outputs (19)

Characterisation of process-induced variability in wrinkle defects during double diaphragm forming of non-crimp fabric (2024)
Journal Article
Codolini, A., Chen, S., Lawrence, G., Harper, L., & Sutcliffe, M. (2024). Characterisation of process-induced variability in wrinkle defects during double diaphragm forming of non-crimp fabric. Composites Part B: Engineering, 281, Article 111549. https://doi.org/10.1016/j.compositesb.2024.111549

Experiments and numerical simulations are employed to determine the critical process variables that affect the quality of a two-layer biaxial non-crimp fabric (NCF) preformed using the double diaphragm forming (DDF) process. To prevent wrinkling defe... Read More about Characterisation of process-induced variability in wrinkle defects during double diaphragm forming of non-crimp fabric.

The Relationship Between the Extent of Indentation and Impact Damage in Carbon-Fibre Reinforced-Plastic Composites after a Low-Velocity Impact (2024)
Journal Article
Brooks, R. A., Liu, J., Hall, Z. E., Joesbury, A. M., Harper, L. T., Liu, H., …Dear, J. P. (2024). The Relationship Between the Extent of Indentation and Impact Damage in Carbon-Fibre Reinforced-Plastic Composites after a Low-Velocity Impact. Applied Composite Materials, https://doi.org/10.1007/s10443-024-10223-2

The present paper investigates the low-velocity impact behaviour of carbon-fibre reinforced-plastic (CFRP) composite panels and the damage incurred when they are subjected to a single impact. The relationship between the depth of permanent surface in... Read More about The Relationship Between the Extent of Indentation and Impact Damage in Carbon-Fibre Reinforced-Plastic Composites after a Low-Velocity Impact.

Modelling the effects of patch-plug configuration on the impact performance of patch-repaired composite laminates (2023)
Journal Article
Liu, H., Liu, J., Hall, Z. E., Brooks, R. A., Crocker, J. W., Joesbury, A. M., …Dear, J. P. (2023). Modelling the effects of patch-plug configuration on the impact performance of patch-repaired composite laminates. Composites Science and Technology, 233, Article 109917. https://doi.org/10.1016/j.compscitech.2023.109917

The patch-plug configuration has been widely used to repair composite structures and restore the structural integrity of damaged composites. In the present research, single-sided CFRP patch-repaired panels, with different patch-plug configurations, a... Read More about Modelling the effects of patch-plug configuration on the impact performance of patch-repaired composite laminates.

Experimental and numerical investigations on the impact behaviour of pristine and patch-repaired composite laminates (2022)
Journal Article
Liu, H., Brooks, R. A., Hall, Z. E., Liu, J., Crocker, J. W., Joesbury, A. M., …Dear, J. P. (2022). Experimental and numerical investigations on the impact behaviour of pristine and patch-repaired composite laminates. Philosophical Transactions A: Mathematical, Physical and Engineering Sciences, 380(2232), Article 20210340. https://doi.org/10.1098/rsta.2021.0340

The present paper investigates the impact behaviour of both pristine carbon-fibre-reinforced-plastic (CFRP) composite laminates and repaired CFRP laminates. For the patch-repaired CFRP specimen, the pristine CFRP panel specimen has been damaged by cu... Read More about Experimental and numerical investigations on the impact behaviour of pristine and patch-repaired composite laminates.

Multiscale viscoplastic modeling of recycled glass fiber-reinforced thermoplastic composites: Experimental and numerical investigations (2022)
Journal Article
Nachtane, M., Meraghni, F., Chatzigeorgiou, G., Harper, L., & Pelascini, F. (2022). Multiscale viscoplastic modeling of recycled glass fiber-reinforced thermoplastic composites: Experimental and numerical investigations. Composites Part B: Engineering, 242, Article 110087. https://doi.org/10.1016/j.compositesb.2022.110087

One of the main challenges facing fiber-reinforced polymer composites is the lack of options for end-of-life recycling. The environmental impact of waste materials disposed of at landfill sites, by incineration, or by erratic dispersion in the enviro... Read More about Multiscale viscoplastic modeling of recycled glass fiber-reinforced thermoplastic composites: Experimental and numerical investigations.

Simulating the effect of fabric bending stiffness on the wrinkling behaviour of biaxial fabrics during preforming (2021)
Journal Article
Yu, F., Chen, S., Harper, L., & Warrior, N. (2021). Simulating the effect of fabric bending stiffness on the wrinkling behaviour of biaxial fabrics during preforming. Composites Part A: Applied Science and Manufacturing, 143, Article 106308. https://doi.org/10.1016/j.compositesa.2021.106308

A macroscopic finite element model has been established to investigate the forming-induced wrinkling behaviour for bi-axial fabrics. Results indicate that using a linear bending model with a constant bending stiffness produces unrealistic wrinkle pat... Read More about Simulating the effect of fabric bending stiffness on the wrinkling behaviour of biaxial fabrics during preforming.

Solid epoxy resin systems for automated composite manufacturing (2020)
Journal Article
Yousefi, N., Evans, A. D., Harper, L. T., Maples, H. A., James, T., & Bismarck, A. (2021). Solid epoxy resin systems for automated composite manufacturing. Composites Part A: Applied Science and Manufacturing, 142, Article 106205. https://doi.org/10.1016/j.compositesa.2020.106205

© 2020 The Author(s) Thermosetting resins were formulated by mixing solid epoxy components, hardener and accelerator at elevated temperature. These mixtures were ground into uncured, solid resin powders and dispensed onto carbon fibres using a powder... Read More about Solid epoxy resin systems for automated composite manufacturing.

The behaviour of thermoplastic and thermoset carbon-fibre composites subjected to low-velocity and high-velocity impact (2020)
Journal Article
Liu, H., Liu, J., Ding, Y., Zheng, J., Kong, X., Zhou, J., …Dear, J. P. (2020). The behaviour of thermoplastic and thermoset carbon-fibre composites subjected to low-velocity and high-velocity impact. Journal of Materials Science, 55, 15741–15768. https://doi.org/10.1007/s10853-020-05133-0

The present paper describes the results from experimental and theoretical modelling studies on the behaviour of continuous carbon-fibre/polymer matrix composites subjected to a relatively low-velocity or high-velocity impact, using a rigid, metallic... Read More about The behaviour of thermoplastic and thermoset carbon-fibre composites subjected to low-velocity and high-velocity impact.

Optimisation of local in-plane constraining forces in double diaphragm forming (2018)
Journal Article
Chen, S., McGregor, O. P., Harper, L. T., Endruweit, A., & Warrior, N. A. (2018). Optimisation of local in-plane constraining forces in double diaphragm forming. Composite Structures, 201, 570-581. https://doi.org/10.1016/j.compstruct.2018.06.062

© 2018 Elsevier Ltd Rigid blocks (risers) were introduced in the double diaphragm forming (DDF) process to change the local in-plane strain distribution in the diaphragms, aimed at reducing wrinkling defects in the production of fabric preforms. A tw... Read More about Optimisation of local in-plane constraining forces in double diaphragm forming.

Simulating damage onset and evolution in fully bio-resorbable composite under three-point bending (2018)
Journal Article
Gao, X., Chen, M., Yang, X., Harper, L., Ahmed, I., & Lu, J. (2018). Simulating damage onset and evolution in fully bio-resorbable composite under three-point bending. Journal of the Mechanical Behavior of Biomedical Materials, 81, https://doi.org/10.1016/j.jmbbm.2018.02.022

This paper presents a strain-based damage model to predict the stress-strain relationship and investigate the damage onset and evolution of the fibre and matrix of a fully bio-resorbable phosphate glass fibre reinforced composite under three-point be... Read More about Simulating damage onset and evolution in fully bio-resorbable composite under three-point bending.

Finite element study of the microdroplet test for interfacial shear strength: Effects of geometric parameters for a carbon fibre/epoxy system (2017)
Journal Article
Zhao, Q., Qian, C., Harper, L., & Warrior, N. (2018). Finite element study of the microdroplet test for interfacial shear strength: Effects of geometric parameters for a carbon fibre/epoxy system. Journal of Composite Materials, 52(16), 2163-2177. https://doi.org/10.1177/0021998317740943

A 3D finite element model has been developed to identify the main causes of variability in the microdroplet test, which is commonly used to characterise the interfacial shear strength between polymer matrices and single filaments. A more realistic dr... Read More about Finite element study of the microdroplet test for interfacial shear strength: Effects of geometric parameters for a carbon fibre/epoxy system.

A water-soluble core material for manufacturing hollow composite sections (2017)
Journal Article
Xiao, Z., Harper, L., Kennedy, A. R., & Warrior, N. (2017). A water-soluble core material for manufacturing hollow composite sections. Composite Structures, 182, https://doi.org/10.1016/j.compstruct.2017.09.058

This paper presents the development of a low-cost water-soluble core material, which is suitable for producing hollow composite structures via high pressure moulding processes, such as compression moulding and resin transfer moulding. The bulk materi... Read More about A water-soluble core material for manufacturing hollow composite sections.

Compression moulding of composites with hybrid fibre architectures (2016)
Journal Article
Corbridge, D., Harper, L. T., De Focatiis, D. S., & Warrior, N. (2017). Compression moulding of composites with hybrid fibre architectures. Composites Part A: Applied Science and Manufacturing, 95, 87-99. https://doi.org/10.1016/j.compositesa.2016.12.018

Advanced Sheet Moulding Compounds (ASMC) and unidirectional (UD) prepregs have been co-compression moulded to form a hybrid composite material. In-mould flow influences the UD fibre architecture in two ways. When UD fibres are aligned transversely to... Read More about Compression moulding of composites with hybrid fibre architectures.

3D geometric modelling of discontinuous fibre composites using a force-directed algorithm (2016)
Journal Article
Harper, L., Qian, C., Luchoo, R., & Warrior, N. (2017). 3D geometric modelling of discontinuous fibre composites using a force-directed algorithm. Journal of Composite Materials, 51(17), 2389-2406. https://doi.org/10.1177/0021998316672722

A geometrical modelling scheme is presented to produce representative architectures for discontinuous fibre composites, enabling downstream modelling of mechanical properties. The model generates realistic random fibre architectures containing high f... Read More about 3D geometric modelling of discontinuous fibre composites using a force-directed algorithm.

Defect formation during preforming of a bi-axial non-crimp fabric with a pillar stitch pattern (2016)
Journal Article
Chen, S., McGregor, O., Harper, L., Endruweit, A., & Warrior, N. (2016). Defect formation during preforming of a bi-axial non-crimp fabric with a pillar stitch pattern. Composites Part A: Applied Science and Manufacturing, 91, 156-167. https://doi.org/10.1016/j.compositesa.2016.09.016

To capture the asymmetrical shear behaviour of a bi-axial NCF with a pillar stitch, a non-orthogonal constitutive model was developed and implemented in finite element forming simulations. Preforming experiments indicate that the local distribution o... Read More about Defect formation during preforming of a bi-axial non-crimp fabric with a pillar stitch pattern.

Optimisation of composite bone plates for ulnar transverse fractures (2016)
Journal Article
Chakladar, N. D., Harper, L. T., & Parsons, A. J. (2016). Optimisation of composite bone plates for ulnar transverse fractures. Journal of the Mechanical Behavior of Biomedical Materials, 57, https://doi.org/10.1016/j.jmbbm.2016.01.029

Metallic bone plates are commonly used for arm bone fractures where conservative treatment (casts) cannot provide adequate support and compression at the fracture site. These plates, made of stainless steel or titanium alloys, tend to shield stress t... Read More about Optimisation of composite bone plates for ulnar transverse fractures.

Mechanical, degradation and cytocompatibility properties of magnesium coated phosphate glass fibre reinforced polycaprolactone composites (2014)
Journal Article
Liu, X., Hasan, M. S., Grant, D. M., Harper, L. T., Parsons, A. J., Palmer, G., …Ahmed, I. (2014). Mechanical, degradation and cytocompatibility properties of magnesium coated phosphate glass fibre reinforced polycaprolactone composites. Journal of Biomaterials Applications, 29(5), https://doi.org/10.1177/0885328214541302

Retention of mechanical properties of phosphate glass fibre reinforced degradable polyesters such as polycaprolactone and polylactic acid in aqueous media has been shown to be strongly influenced by the integrity of the fibre/polymer interface. A pre... Read More about Mechanical, degradation and cytocompatibility properties of magnesium coated phosphate glass fibre reinforced polycaprolactone composites.

Initial mechanical properties of phosphate-glass fibre-reinforced rods for use as resorbable intramedullary nails (2012)
Journal Article
Felfel, R. M., Ahmed, I., Parsons, A. J., Harper, L. T., & Rudd, C. D. (2012). Initial mechanical properties of phosphate-glass fibre-reinforced rods for use as resorbable intramedullary nails. Journal of Materials Science, 47(12), 4884-4894. https://doi.org/10.1007/s10853-012-6355-9

This paper investigates the use of novel phosphate- glass fibre-reinforced rods as resorbable intramedullary nails. Random and unidirectional fibres were moulded into composite rods by forging at ∼100 °C. Rods produced using non-woven random mats (RM... Read More about Initial mechanical properties of phosphate-glass fibre-reinforced rods for use as resorbable intramedullary nails.

Influence of screw holes and gamma sterilization on properties of phosphate glass fiber-reinforced composite bone plates (2011)
Journal Article
Han, N., Ahmed, I., Parsons, A. J., Harper, L., Scotchford, C. A., Scammell, B. E., & Rudd, C. D. (2013). Influence of screw holes and gamma sterilization on properties of phosphate glass fiber-reinforced composite bone plates. Journal of Biomaterials Applications, 27(8), 990-1002. https://doi.org/10.1177/0885328211431855

Polymers prepared from polylactic acid (PLA) have found a multitude of uses as medical devices. For a material that degrades, the main advantage is that an implant would not necessitate a second surgical event for removal. In this study, fibers produ... Read More about Influence of screw holes and gamma sterilization on properties of phosphate glass fiber-reinforced composite bone plates.