All Outputs (19)

Design and evaluation of a novel variable-length stepped scarf repair technique using a cohesive damage model (2024)
Journal Article

The advantages of Carbon Fibre Reinforced Polymers (CFRPs) are well established, but repairing CFRP components remains difficult and costly, posing challenges for industries like aerospace. This paper explores the design, modelling, inspection, and t... Read More about Design and evaluation of a novel variable-length stepped scarf repair technique using a cohesive damage model.

Experimental investigation of buckling and post-buckling behaviour of repaired composite laminates under in-plane shear loading (2024)
Journal Article

The performance of Ramped Scarf (RS) and Stepped Scarf (SS) repair schemes for highly loaded composite structures has been extensively studied under compressive, tensile, and flexural loadings. However, there is a lack of research on the buckling and... Read More about Experimental investigation of buckling and post-buckling behaviour of repaired composite laminates under in-plane shear loading.

An experimental investigation of tensile residual strength of repaired composite laminates after low velocity impact (2024)
Journal Article

Low Velocity Impact (LVI) of Carbon Fibre Reinforced Polymer (CFRP) components are common during the manufacture and in-service life of aerostructures. However, the resulting effect on structural mechanical properties has not been extensively studied... Read More about An experimental investigation of tensile residual strength of repaired composite laminates after low velocity impact.

Experimental study of bonded, bolted, and hybrid bonded-bolted single lap shear joints with woven CFRP adherends (2024)
Journal Article

This paper presents an extensive experimental performance study of bonded joints (BJs), only bolted joints (OBJs) and hybrid bonded-bolted joints (HJs). For each joint type, three test configurations are considered: namely, short, medium and long ove... Read More about Experimental study of bonded, bolted, and hybrid bonded-bolted single lap shear joints with woven CFRP adherends.

Effect of interlayer thickness on mechanical properties of steel/polymer/steel laminates fabricated by roll bonding technique (2024)
Journal Article

Nowadays, metal/polymer/metal laminates are extensively used in various industries due to their unparalleled properties. In this study, the roll bonding process was employed for lamination of low carbon steel (St14) and semi-melted thermoplastic poly... Read More about Effect of interlayer thickness on mechanical properties of steel/polymer/steel laminates fabricated by roll bonding technique.

Numerical shape, thickness and stacking sequence optimisation and experimental study of hybrid composite plates under in-plane shear loading (2023)
Journal Article

Shape, thickness and stacking sequence optimisation of a damage tolerant hybrid (GFRP-CFRP) composite laminate is performed using the commercial Optistruct solver. The results of the optimisation study are compared to both a benchmark non-damage tole... Read More about Numerical shape, thickness and stacking sequence optimisation and experimental study of hybrid composite plates under in-plane shear loading.

An experimental investigation of the impact response and post-impact shear buckling behaviour of hybrid composite laminates (2023)
Journal Article

This paper investigates the effect of transverse impact loading on the in-plane shear behaviour of two laminate configurations. The extensive experimental studies consider a pure carbon laminate (type 1) and a novel X-shaped carbon/glass laminate (ty... Read More about An experimental investigation of the impact response and post-impact shear buckling behaviour of hybrid composite laminates.

Experimental and numerical study of hybrid (CFRP-GFRP) composite laminates containing circular cut-outs under shear loading (2022)
Journal Article

Previous works have established the response and failure behaviour of hybrid (CFRP-GFRP) laminates when subjected to a wide range of destabilising loads. However, to date no works have focused on plates with cut-outs under shear loading and quantifie... Read More about Experimental and numerical study of hybrid (CFRP-GFRP) composite laminates containing circular cut-outs under shear loading.

Design, novel quality check and experimental test of an original variable length stepped scarf repair scheme (2021)
Journal Article

The performance of well-established stepped scarf repair schemes for highly loaded composite structures has been studied in previous works. However, none of the proposed repair schemes appear to minimise healthy material removal. Thus, this paper pro... Read More about Design, novel quality check and experimental test of an original variable length stepped scarf repair scheme.

Detection of barely visible impact damage in polymeric laminated composites using a biomimetic tactile whisker (2021)
Journal Article

This is a novel investigation on the possibility of detecting barely visible impact damage (BVID) in composite materials by whisking across the surface via tactile whisker sensors that resemble rats' whiskers. A series of drop tower low-velocity impa... Read More about Detection of barely visible impact damage in polymeric laminated composites using a biomimetic tactile whisker.

Using laminate hybridisation (CFRP-GFRP) and shaped CFRP plies to increase plate post-buckling strain to failure under shear loading (2021)
Journal Article

Previous works have established the response and failure behaviour of hybrid (CFRP-GFRP) laminates when subjected to a wide range of destabilising loads. However, to date no works have quantified the influence of selective laminate shapes and hybridi... Read More about Using laminate hybridisation (CFRP-GFRP) and shaped CFRP plies to increase plate post-buckling strain to failure under shear loading.

A comparative study on glass and carbon fibre reinforced laminated composites in scaled quasi-static indentation tests (2020)
Journal Article

This paper investigates the effect of fibre properties of composite structures on the mechanical performance and formation of low-velocity impact damage. Quasi-static indentation tests were conducted on a comprehensive set of scaled Quasi Isotropic (... Read More about A comparative study on glass and carbon fibre reinforced laminated composites in scaled quasi-static indentation tests.

Experimental evaluation of residual tensile strength of hybrid composite aerospace materials after low velocity impact (2019)
Journal Article

© 2019 Elsevier Ltd Although much work has considered hybridised Carbon and Glass Fibre Reinforced Polymers to positively influence the performance of composite structures when subjected to transverse impact loading, there is limited understanding co... Read More about Experimental evaluation of residual tensile strength of hybrid composite aerospace materials after low velocity impact.

Understanding the influence of laminate stacking sequence on strain/stress concentrations in thin laminates at repair holes with large scarf angles (2019)
Journal Article

Scarf repair is widely used in the restoration of structural performance of damaged aircraft secondary structures. Such repairs result in reduced thickness sections which are significantly larger than those associated with typical fastener holes. Sig... Read More about Understanding the influence of laminate stacking sequence on strain/stress concentrations in thin laminates at repair holes with large scarf angles.

The effects of composite laminate stiffness and loading on stress resultant concentration factor around a hole (2018)
Journal Article

© 2018, © IMechE 2018. An analytical tool is developed using conformal mapping and the complex variable method for determining the stress resultant concentration factor in an infinite plate with a circular or elliptical hole. This tool is validated a... Read More about The effects of composite laminate stiffness and loading on stress resultant concentration factor around a hole.

Global buckling of composite plates containing rectangular delaminations using exact stiffness analysis and smearing method (2014)
Journal Article

The global buckling of a composite plate with a single rectangular delamination is studied using a smearing method and employing exact stiffness analysis and the Wittrick-Williams algorithm. Computational efficiency is achieved by avoiding discretisa... Read More about Global buckling of composite plates containing rectangular delaminations using exact stiffness analysis and smearing method.

Critical buckling of delaminated composite plates using exact stiffness analysis (2011)
Journal Article

The critical buckling of composite plates with through-the-length delaminations is studied using exact stiffness analysis and the Wittrick-Williams algorithm. Computational efficiency is achieved by avoiding discretisation into elements, making the m... Read More about Critical buckling of delaminated composite plates using exact stiffness analysis.

Global buckling behaviour of composite plates containing embedded rectangular delaminations using exact stiffness analysis (2009)
Presentation / Conference Contribution

Critical buckling of delaminated composite plates using exact stiffness analysis (2008)
Presentation / Conference Contribution

Composite materials are widely used in aerospace structures. Although these materials offer many advantages over metals in terms of strength, stiffness and low mass, additional types of failure can be encountered. One of the most serious of these is... Read More about Critical buckling of delaminated composite plates using exact stiffness analysis.