Poole, M; Gower, M; Giannis, S (2022) Mechanical Testing of 3D Composites - A Route to Best Practice. In: 20th European Conference on Composite Materials (ECCM 20), 26 - 30 June 2022, Lausanne, Switzerland.

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Abstract

Currently 3D composites are unrepresented within the majority of composite test standards. As such, NPL undertook a programme of work to determine the applicability of current test standards for use with 3D composites. Good practice guidance has been proposed after a thorough assessment of the applicability of existing mechanical test standards covering tension, compression, flexure, shear, fracture toughness and impact/post-impact loading. For the test method assessments undertaken, two 3D woven composite architectures, a glass fibre-reinforced epoxy orthogonal and a carbon fibre-reinforced epoxy layer-to-layer, have been studied. Due to the relatively large unit cell sizes found in 3D composite formats, testing was conducted using both standard and non-standard test specimen dimensions. The aim was to provide an understanding of the mechanical performance of 3D composite materials, as well as good practice recommendations not included in existing standards.

Item Type:	Conference or Workshop Item (Paper)
Keywords:	3D woven composites mechanical testing
Subjects:	Advanced Materials > Composites
Last Modified:	06 Oct 2025 10:26
URI:	https://eprintspublications.npl.co.uk/id/eprint/9455