Tool interface pressure during the forming of model composite corners

Pascal Hubert, James Kratz*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

Abstract

A new experimental technique is proposed to measure the pressure gradient in corner laminates with the aim of guiding manufacturing practices that can produce composites laminates to the desired thickness. A pressure mapping sensor was placed between a metal mould tool and a silicone sheet that acts as an idealised composite part. The compaction pressure loss in internal corners and rise in external corners is reported for the first time, covering a part thickness to radius ratio of 0.2 to 0.8 in the corner. A conclusive trend was observed in internal corners, where the pressure drop increases proportionally with the thickness to radius ratio. The sensor thickness, bulk, and contact with the tool created difficulties in measuring the true extent of the pressure rise for external corners. Stretchable thin film sensors might provide better alternatives for future studies looking to investigate pressure gradients in doubly curved geometries.
Original languageEnglish
Article number106639
Number of pages13
JournalComposites Part A: Applied Science and Manufacturing
Volume151
Early online date9 Sep 2021
DOIs
Publication statusPublished - 1 Dec 2021

Bibliographical note

Funding Information:
The authors acknowledge the University of Bristol International Research Partnership and the Programme d'échanges hors Québec de professeurs from the Fonds de recherche du Québec – Nature et technologies (FRQNT) for supporting a one-month Benjamin Meaker Visiting Professorship for Pascal Hubert. Access to the sensor was provided through the EPSRC Future Composites Manufacturing Research Hub (EP/P006701/1).

Funding Information:
The authors acknowledge the University of Bristol International Research Partnership and the Programme d'?changes hors Qu?bec de professeurs from the Fonds de recherche du Qu?bec ? Nature et technologies (FRQNT) for supporting a one-month Benjamin Meaker Visiting Professorship for Pascal Hubert. Access to the sensor was provided through the EPSRC Future Composites Manufacturing Research Hub (EP/P006701/1).

Publisher Copyright:
© 2021 Elsevier Ltd

Keywords

  • D. Process monitoring
  • E. Consolidation
  • E. Tooling

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