Gower, M R L; Sims, G D (2003) Material data requirements and recommended test methods for the predictive modelling of defect criticality in composite material systems. NPL Report. MATC(A)147

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Abstract

Prior work within the MMS13 project had proposed an approach for the modelling of delamination and matrix micro-cracking defect criticality based on three assessment levels; ranging from the relatively straightforward and simplistic Level 1 analysis, up to a more complex, accurate and time consuming Level 3 investigation. This report documents the material property requirements and associated recommended test methods/experimental guidance for generating material data for the predictive modelling of the criticality of such defects according to the three level approach.
In-plane and through-thickness properties are required for tension, compression and shear, as well as the measurement of fracture toughness data for Mode I and II loading. Details on the most appropriate test standards, specimen sizes and testing good practice are provided.
For the highest degree of accuracy when undertaking a Level 1, 2 or 3 assessment of defect criticality, measured data should ideally be used, however it is acceptable at Levels 1 and 2 to use assumed data provided that any assumptions made are valid and justifiable. For a Level 3 analysis it is strongly recommended that only first hand measured or validated predicted data are used.

Item Type:	Report/Guide (NPL Report)
NPL Report No.:	MATC(A)147
Subjects:	Advanced Materials Advanced Materials > Composites Advanced Materials > Materials Modelling
Last Modified:	02 Feb 2018 13:16
URI:	http://eprintspublications.npl.co.uk/id/eprint/2854

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