The compaction of uncured toughened prepreg laminates in relation to automated forming

C. Hall, C. Ward, D. S. Ivanov, K. Potter

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

4 Citations (Scopus)

Abstract

Composite manufacturing uses pressure and temperature in lay-up to produce parts with high volume fractions, limited features, and low porosity. Modern prepregs are very complex, incorporating significant levels of thermoplastic toughener that makes them behave dually: as unconsolidated thermoplastics at low temperatures, and conventional thermoset prepregs at elevated temperatures. This paper presents an experimental programme to study the compressibility of a modern prepreg at various temperatures and constraint conditions using a Dynamic Mechanical Analyser. Testing revealed a number of physical phenomena, including gradual transition from shear squeezing flow to bleeding percolation flow, strong constraining effects of adjacent non-cured plies, and non-monotonic compressibility over the temperature range of 20-90°C.

Original languageEnglish
Title of host publicationECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials
PublisherEuropean Conference on Composite Materials, ECCM
ISBN (Print)9788888785332
Publication statusPublished - 1 Jan 2012
Event15th European Conference on Composite Materials: Composites at Venice, ECCM 2012 - Venice, United Kingdom
Duration: 24 Jun 201228 Jun 2012

Conference

Conference15th European Conference on Composite Materials: Composites at Venice, ECCM 2012
CountryUnited Kingdom
CityVenice
Period24/06/1228/06/12

Keywords

  • Automation
  • Compaction
  • Deformation
  • Prepreg

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