Tool interface pressure during the forming of model composite corners

Pascal Hubert; James Kratz

doi:10.1016/j.compositesa.2021.106639

Tool interface pressure during the forming of model composite corners

Pascal Hubert, James Kratz^*

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

5 Citations (Scopus)

11 Downloads (Pure)

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 language	English
Article number	106639
Number of pages	13
Journal	Composites Part A: Applied Science and Manufacturing
Volume	151
Early online date	9 Sept 2021
DOIs	https://doi.org/10.1016/j.compositesa.2021.106639
Publication status	Published - 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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10.1016/j.compositesa.2021.106639

Full-text PDF (accepted author manuscript)
This is the accepted author manuscript (AAM). The final published version (version of record) is available online via Elsevier at 10.1016/j.compositesa.2021.106639. Please refer to any applicable terms of use of the publisher.
Accepted author manuscript, 948 KBLicence: CC BY-NC-ND

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Composites manufacturing Research Hub via Nottingham
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title = "Tool interface pressure during the forming of model composite corners",

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.",

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N1 - 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

PY - 2021/12/1

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N2 - 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.

AB - 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.

KW - D. Process monitoring

KW - E. Consolidation

KW - E. Tooling

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DO - 10.1016/j.compositesa.2021.106639

M3 - Article (Academic Journal)

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VL - 151

JO - Composites Part A: Applied Science and Manufacturing

JF - Composites Part A: Applied Science and Manufacturing

M1 - 106639

ER -

Tool interface pressure during the forming of model composite corners

Abstract

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Keywords

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Composites manufacturing Research Hub via Nottingham

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