Outputs (45)

Introduction (2023)
Book Chapter
Harper, L., & Clifford, M. (2023). Introduction. In Design and Manufacture of Structural Composites (3-17). Elsevier. https://doi.org/10.1016/b978-0-12-819160-6.00009-3

Fibre-reinforced polymer composites are acknowledged to offer some of the highest specific properties (stiffness, strength) of any engineering materials, but this chapter takes a look at why these materials are not more widely adopted for general str... Read More about Introduction.

Reinforcing fibres (2023)
Book Chapter
Parsons, A. (2023). Reinforcing fibres. In L. Harper, & M. Clifford (Eds.), Design and Manufacture of Structural Composites (19-34). Elsevier. https://doi.org/10.1016/B978-0-12-819160-6.00008-1

This chapter provides information on the type of reinforcing fibres commonly used in polymer composites. Inorganic and organic fibres are described along with general information on their manufacture, applications, and representative properties. Suit... Read More about Reinforcing fibres.

Rapidly predicting the effect of tool geometry on the wrinkling of biaxial NCFs during composites manufacturing using a deep learning surrogate model (2023)
Journal Article
Viisainen, J., Yu, F., Codolini, A., Chen, S., Harper, L., & Sutcliffe, M. (2023). Rapidly predicting the effect of tool geometry on the wrinkling of biaxial NCFs during composites manufacturing using a deep learning surrogate model. Composites Part B: Engineering, 253, Article 110536. https://doi.org/10.1016/j.compositesb.2023.110536

A deep learning surrogate model is developed to rapidly predict the wrinkling patterns of a biaxial non-crimp fabric (NCF) layup for any given tool geometry during forming. The underlying dataset of finite element simulations is used to investigate t... Read More about Rapidly predicting the effect of tool geometry on the wrinkling of biaxial NCFs during composites manufacturing using a deep learning surrogate model.

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., Harper, L. T., Blackman, B. R., Kinloch, A. J., & 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.

The influence of inter-ply friction during double-diaphragm forming of biaxial NCFs (2023)
Journal Article
Lawrence, G. D., Chen, S., Warrior, N. A., & Harper, L. T. (2023). The influence of inter-ply friction during double-diaphragm forming of biaxial NCFs. Composites Part A: Applied Science and Manufacturing, 167, Article 107426. https://doi.org/10.1016/j.compositesa.2023.107426

Inter-ply friction plays an important role in the formation of defects in automated preforming of complex components, as relative sliding between plies can generate local compressive stresses in the direction of the primary yarns, leading to out-of-p... Read More about The influence of inter-ply friction during double-diaphragm forming of biaxial NCFs.

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., Harper, L. T., Blackman, B. R., Kinloch, A. J., & 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.

The effectiveness of patch repairs to restore the impact properties of carbon-fibre reinforced-plastic composites (2022)
Journal Article
Hall, Z., Liu, J., Brooks, R., Liu, H., Crocker, J., Joesbury, A., Harper, L., Blackman, B. R., Kinloch, A., & Dear, J. (2022). The effectiveness of patch repairs to restore the impact properties of carbon-fibre reinforced-plastic composites. Engineering Fracture Mechanics, 270, Article 108570. https://doi.org/10.1016/j.engfracmech.2022.108570

The present paper studies the low-velocity impact testing of carbon-fibre reinforced-plastic (CFRP) pristine and patch-repair CFRP panels. Firstly, the effect of repeated impacts on the pristine CFRP damage growth is considered at impact energies of... Read More about The effectiveness of patch repairs to restore the impact properties of carbon-fibre reinforced-plastic composites.

Design guidelines for hybrid continuous/discontinuous carbon fibre laminates (2022)
Journal Article
Evans, A. D., Turner, T. A., Harper, L. T., & Warrior, N. A. (2022). Design guidelines for hybrid continuous/discontinuous carbon fibre laminates. Journal of Composite Materials, 56(10), 1513-1527. https://doi.org/10.1177/00219983221078786

Combining discontinuous carbon fibre moulding compounds with unidirectional (UD) non-crimp fabric has been studied as a potential solution for producing cost effective composite structures, with short cycle times via compression moulding. The tensile... Read More about Design guidelines for hybrid continuous/discontinuous carbon fibre laminates.

Optimisation of intra-ply stitch removal for improved formability of biaxial non-crimp fabrics (2021)
Journal Article
Chen, S., Joesbury, A. M., Yu, F., Harper, L. T., & Warrior, N. A. (2022). Optimisation of intra-ply stitch removal for improved formability of biaxial non-crimp fabrics. Composites Part B: Engineering, 229, Article 109464. https://doi.org/10.1016/j.compositesb.2021.109464

Automated fabric forming solutions are required to meet the demand of liquid moulding processes, but wrinkling is a common problem for double-curvature parts due to a combination of the reinforcement type, manufacturing parameters and the part geomet... Read More about Optimisation of intra-ply stitch removal for improved formability of biaxial non-crimp fabrics.