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Experimental evaluation of residual tensile strength of hybrid composite aerospace materials after low velocity impact

Damghani, Mahdi; Ersoy, Nuri; Piorkowski, Michal; Murphy, Adrian

Experimental evaluation of residual tensile strength of hybrid composite aerospace materials after low velocity impact Thumbnail


Authors

Nuri Ersoy Nuri3.Ersoy@uwe.ac.uk
Senior Lecturer in Mechanical Engineering

Michal Piorkowski

Adrian Murphy



Abstract

© 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 considering low energy impact levels (≤10J) - in particular how variation in impact energy influences damage formation and post impact tensile strength. Herein, low velocity impact and residual tensile strength after impact tests are completed on four laminate designs (one pure Carbon laminate layup and three hybrid Carbon and Glass layups). Three repeat tests and three graduated low energy level impacts (≤10 J) are considered along with pristine laminate performance. The impact response was evaluated in terms of surface damage size by visual inspection, and the evolution of peak force and stiffness with impact energy level. The contribution of this paper is the first presentation of a detailed experimental study on the tensile performance of hybrid composite materials subjected to a graduated range of low energy level impacts. The methodical experimental work demonstrates how the hybrid layup influences the scale and form of damage. By distributing the glass plies through the laminate, as opposed to clustering the glass plies at the inner or outer mould surfaces, more favourable residual tensile strength and strain to failure is demonstrated.

Citation

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, https://doi.org/10.1016/j.compositesb.2019.107537

Journal Article Type Article
Acceptance Date Oct 13, 2019
Online Publication Date Oct 16, 2019
Publication Date Dec 15, 2019
Deposit Date Oct 21, 2019
Publicly Available Date Oct 17, 2020
Journal Composites Part B: Engineering
Print ISSN 1359-8368
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 179
Article Number 107537
DOI https://doi.org/10.1016/j.compositesb.2019.107537
Keywords low velocity impact, composites, aerospace, CFRP, GFRP, hybrid
Public URL https://uwe-repository.worktribe.com/output/3980659
Publisher URL https://www.journals.elsevier.com/composites-part-b-engineering

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