Measurement of fibre waviness in industrial composite components

Sutcliffe, M.P.F, Lemanski, S.L. and Scott, A.E. (2012) Measurement of fibre waviness in industrial composite components. Composites Science and Technology, 72, (16), 1781-1792. (doi:10.1016/j.compscitech.2012.09.001).


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Fibre orientation is measured from polished sections of the unidirectional plies of two industrial CFRP components made by resin transfer moulding (RTM) or prepreg/vacuum consolidation. The image analysis technique described by Creighton et al. [Composites: Part A 2001; 32: 221–229] is used to determine the fibre orientation over typically 5 × 5 mm sections. The standard deviation in fibre orientation angle is in the range 0.6–1.8°, being smallest for in-plane waviness of the prepreg component. The length and width of the waviness region along and transverse to the fibres is characterised using autocorrelation. The length is in the range 1.1–4.4 mm, being significantly greater in the prepreg than in the RTM component. The width is in the range 0.37–1.30 mm and is broadly similar across the sample types. It is demonstrated that the image analysis method can also be applied to X-ray images, giving good agreement with results from the polished prepreg samples.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1016/j.compscitech.2012.09.001
ISSNs: 0266-3538 (print)
Keywords: carbon fibres, defects, optical microscopy
Divisions : Faculty of Engineering and the Environment
ePrint ID: 342062
Accepted Date and Publication Date:
16 November 2012Published
Date Deposited: 10 Aug 2012 15:06
Last Modified: 31 Mar 2016 14:32

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