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Numerical shape, thickness and stacking sequence optimisation and experimental study of hybrid composite plates under in-plane shear loading (2023)
Journal Article
Damghani, M., Matthews, J., Murphy, A., & Featherston, C. (2023). Numerical shape, thickness and stacking sequence optimisation and experimental study of hybrid composite plates under in-plane shear loading. Structures, 51, 372-390. https://doi.org/10.1016/j.istruc.2023.03.066

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
Damghani, M., Saddler, J., Sammon, E., Atkinson, G. A., Matthews, J., & Murphy, A. (2023). An experimental investigation of the impact response and post-impact shear buckling behaviour of hybrid composite laminates. Composite Structures, 305, 116506. https://doi.org/10.1016/j.compstruct.2022.116506

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
Damghani, M., Ali, R., Murphy, A., & Fotouhi, M. (2022). Experimental and numerical study of hybrid (CFRP-GFRP) composite laminates containing circular cut-outs under shear loading. Thin-Walled Structures, 179(October 2022), 109752. https://doi.org/10.1016/j.tws.2022.109752

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
Damghani, M., Bolanos, S., Chahar, A., Matthews, J., Atkinson, G. A., Murphy, A., & Edwards, T. (2022). Design, novel quality check and experimental test of an original variable length stepped scarf repair scheme. Composites Part B: Engineering, 230, Article 109542. https://doi.org/10.1016/j.compositesb.2021.109542

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
Fotouhi, S., Khayatzadeh, S., Pui, W. X., Damghani, M., Bodaghi, M., & Fotouhi, M. (2021). Detection of barely visible impact damage in polymeric laminated composites using a biomimetic tactile whisker. Polymers, 13(20), Article 3587. https://doi.org/10.3390/polym13203587

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
Damghani, M., Wallis, C., Bakunowicz, J., & Murphy, A. (2021). Using laminate hybridisation (CFRP-GFRP) and shaped CFRP plies to increase plate post-buckling strain to failure under shear loading. Thin-Walled Structures, 162, Article 107543. https://doi.org/10.1016/j.tws.2021.107543

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
Fotouhi, M., Damghani, M., Leong, M. C., Fotouhi, S., Jalalvand, M., & Wisnom, M. R. (2020). A comparative study on glass and carbon fibre reinforced laminated composites in scaled quasi-static indentation tests. Composite Structures, 245, Article 112327. https://doi.org/10.1016/j.compstruct.2020.112327

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
Damghani, M., Ersoy, N., Piorkowski, M., & Murphy, A. (2019). Experimental evaluation of residual tensile strength of hybrid composite aerospace materials after low velocity impact. Composites Part B: Engineering, 179, Article 107537. https://doi.org/10.1016/j.compositesb.2019.107537

© 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
Damghani, M., Bakunowicz, J., & Murphy, A. (2019). Understanding the influence of laminate stacking sequence on strain/stress concentrations in thin laminates at repair holes with large scarf angles. Journal of Composite Materials, 53(28-30), 4273-4284. https://doi.org/10.1177/0021998319855772

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.

Global buckling of composite plates containing rectangular delaminations using exact stiffness analysis and smearing method (2014)
Journal Article
Damghani, M., Kennedy, D., & Featherston, C. (2014). Global buckling of composite plates containing rectangular delaminations using exact stiffness analysis and smearing method. Computers and Structures, 134, 32-47. https://doi.org/10.1016/j.compstruc.2013.12.005

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
Damghani, M., Kennedy, D., & Featherston, C. (2011). Critical buckling of delaminated composite plates using exact stiffness analysis. Computers and Structures, 89(13-14), 1286-1294. https://doi.org/10.1016/j.compstruc.2011.04.003

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.

Critical buckling of delaminated composite plates using exact stiffness analysis (2008)
Conference Proceeding
Damghani, M., Kennedy, D., & Featherston, C. (2008). Critical buckling of delaminated composite plates using exact stiffness analysis. In Proceedings of the Ninth International Conference on Computational Structures Technology (309). https://doi.org/10.4203/ccp.88.309

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.