Hand Layup: understanding the manual process

Michael Elkington, Carwyn Ward, L Dominic Bloom, Kevin Potter, Anna Chatzimichali

Research output: Contribution to journalArticle (Academic Journal)

40 Citations (Scopus)
1425 Downloads (Pure)

Abstract

The hand layup of pre-impregnated woven materials is still a large part of the composite manufacturing industry, requiring the skills and experience of a human workforce to form flat plies into complex shapes. It is capable of producing high performance and complex parts, but can be an expensive and variable process. Despite its importance, there appears to have been very little research into the actual methods and techniques used by workers to manipulate flat sheets of composite material into shape during layup. This work presents the first known detailed study of the approach and techniques used by laminators. Four participants laid up onto 15 different shaped molds that replicated features commonly found on composite components. The actions used in layup were grouped into eight distinct techniques. Use of these techniques across tasks of different geometry, ramp angles, radii and drape path was identified using video analysis techniques from the ergonomics field. This revealed strong links between specific features and techniques, revealing a systematic approach to layup. This has enabled the first step toward producing a design for manufacture knowledge base surrounding hand layup. This could then be used to inform the development of the layup process, improve training methods and assist in the design of future automated solutions.
Original languageEnglish
Pages (from-to)138-151
Number of pages14
JournalAdvanced Manufacturing: Polymer and Composites Science
Volume1
Issue number3
Early online date30 Nov 2015
DOIs
Publication statusPublished - Dec 2015

Keywords

  • Hand layup
  • Drape
  • Ergonomics
  • Observation
  • Technique

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