Experimental determination and control of prepreg tack for automated manufacture

Crossley, R. J. and Schubel, P. J. and Warrior, N. A. (2011) Experimental determination and control of prepreg tack for automated manufacture. Plastics, Rubber and Composites, 40 (6/7). pp. 363-368. ISSN 1465-8011

Abstract

The automated tape laying (ATL) process has been examined and found to be sensitive to tack and stiffness properties of the prepreg material being laid. A comparison of existing aerospace and newly developed ATL prepreg tapes has revealed significant differences in tack response to temperature and feedrate. Examination of constituent resin rheology has found that tack, and the two observed failure modes, are somewhat dependent upon viscoelastic stiffness. Observation of temperature and feedrate response revealed a time–temperature superposition relationship. The Williams–Landel–Ferry equation was utilised to make predictions of the temperature response based on the feedrate response. Tack levels were stabilised over the feedrate range by making temperature adjustments. Results from the peel test, where mould conditions at lay-up were recreated, were found transferable to the ATL, where a suitable lay-up feedrate under ambient conditions was predicted.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 28 Mar 2017 04:04
Last Modified: 06 Feb 2018 23:57
Uncontrolled Keywords: ATL, automated manufacture, WLF, prepreg, tack, stiffness, rheology
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1179/174328910X12777566997810
URI: http://eprints.usq.edu.au/id/eprint/31027

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