Novel TAPE termination method for automated fibre placement: cutting characteristics and delamination suppression

Tharan Gordon; Xiaodong Xu; Michael R Wisnom; Byung Chul (Eric) Kim

doi:10.1016/j.compositesa.2020.106023

Novel TAPE termination method for automated fibre placement: cutting characteristics and delamination suppression

Tharan Gordon, Xiaodong Xu, Michael R Wisnom, Byung Chul (Eric) Kim^*

^*Corresponding author for this work

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

23 Citations (Scopus)

Abstract

A novel tape termination method for tapering the ply end and removing the fibre discontinuity owing to a dropped ply in a tapered composite was demonstrated. The forces required for this process - referred to as scarfing - were experimentally investigated with respect to blade speed, scarfing ratio, tape thickness and width. Tensile tests were conducted on unidirectional laminate specimens with a scarfed ply at two different aspect ratios to examine the effect of scarfing ratio on the delamination behaviour of the specimens. The results showed that the ply scarfing ratio is a critical parameter controlling the cutting force and delamination behaviour in a tapered specimen, and upon reaching a certain threshold delamination can be completely suppressed. The method demonstrated has potential for implementation in commercial AFP machines, theoretically realising a more compact cutting mechanism, with the capability of preventing delamination in the ply drop regions.

Original language	English
Article number	106023
Number of pages	11
Journal	Composites Part A: Applied Science and Manufacturing
Volume	137
Early online date	4 Jul 2020
DOIs	https://doi.org/10.1016/j.compositesa.2020.106023
Publication status	Published - 1 Oct 2020

Keywords

Prepreg
Delamination
Automated Fibre Placement (AFP)
Cutting

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23 Citations
1 Article (Academic Journal)

Delamination suppression in tapered unidirectional laminates with multiple ply drops using a tape scarfing technique
Gordon, T. M. G., Xu, X., Kawashita , L. F., Wisnom, M. R., Hallett, S. R. & Kim, B. C., Nov 2021, In: Composites Part A: Applied Science and Manufacturing. 150, 106627.
Research output: Contribution to journal › Article (Academic Journal) › peer-review

Open Access
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23 Citations (Scopus)

201 Downloads (Pure)

1 Finished

EPSRC First grant: Novel Tow Termination Technology for High-Quality AFP Production of Composite Structures with Blended Ply Drop-offs
Kim, B. C. (Principal Investigator)
1/07/17 → 31/12/19
Project: Research

Cite this

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title = "Novel TAPE termination method for automated fibre placement: cutting characteristics and delamination suppression",

abstract = "A novel tape termination method for tapering the ply end and removing the fibre discontinuity owing to a dropped ply in a tapered composite was demonstrated. The forces required for this process - referred to as scarfing - were experimentally investigated with respect to blade speed, scarfing ratio, tape thickness and width. Tensile tests were conducted on unidirectional laminate specimens with a scarfed ply at two different aspect ratios to examine the effect of scarfing ratio on the delamination behaviour of the specimens. The results showed that the ply scarfing ratio is a critical parameter controlling the cutting force and delamination behaviour in a tapered specimen, and upon reaching a certain threshold delamination can be completely suppressed. The method demonstrated has potential for implementation in commercial AFP machines, theoretically realising a more compact cutting mechanism, with the capability of preventing delamination in the ply drop regions.",

keywords = "Prepreg, Delamination, Automated Fibre Placement (AFP), Cutting",

author = "Tharan Gordon and Xiaodong Xu and Wisnom, {Michael R} and Kim, {Byung Chul (Eric)}",

year = "2020",

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day = "1",

doi = "10.1016/j.compositesa.2020.106023",

language = "English",

volume = "137",

journal = "Composites Part A: Applied Science and Manufacturing",

issn = "1359-835X",

publisher = "Elsevier Science",

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TY - JOUR

T1 - Novel TAPE termination method for automated fibre placement

T2 - cutting characteristics and delamination suppression

AU - Gordon, Tharan

AU - Xu, Xiaodong

AU - Wisnom, Michael R

AU - Kim, Byung Chul (Eric)

PY - 2020/10/1

Y1 - 2020/10/1

N2 - A novel tape termination method for tapering the ply end and removing the fibre discontinuity owing to a dropped ply in a tapered composite was demonstrated. The forces required for this process - referred to as scarfing - were experimentally investigated with respect to blade speed, scarfing ratio, tape thickness and width. Tensile tests were conducted on unidirectional laminate specimens with a scarfed ply at two different aspect ratios to examine the effect of scarfing ratio on the delamination behaviour of the specimens. The results showed that the ply scarfing ratio is a critical parameter controlling the cutting force and delamination behaviour in a tapered specimen, and upon reaching a certain threshold delamination can be completely suppressed. The method demonstrated has potential for implementation in commercial AFP machines, theoretically realising a more compact cutting mechanism, with the capability of preventing delamination in the ply drop regions.

AB - A novel tape termination method for tapering the ply end and removing the fibre discontinuity owing to a dropped ply in a tapered composite was demonstrated. The forces required for this process - referred to as scarfing - were experimentally investigated with respect to blade speed, scarfing ratio, tape thickness and width. Tensile tests were conducted on unidirectional laminate specimens with a scarfed ply at two different aspect ratios to examine the effect of scarfing ratio on the delamination behaviour of the specimens. The results showed that the ply scarfing ratio is a critical parameter controlling the cutting force and delamination behaviour in a tapered specimen, and upon reaching a certain threshold delamination can be completely suppressed. The method demonstrated has potential for implementation in commercial AFP machines, theoretically realising a more compact cutting mechanism, with the capability of preventing delamination in the ply drop regions.

KW - Prepreg

KW - Delamination

KW - Automated Fibre Placement (AFP)

KW - Cutting

U2 - 10.1016/j.compositesa.2020.106023

DO - 10.1016/j.compositesa.2020.106023

M3 - Article (Academic Journal)

SN - 1359-835X

VL - 137

JO - Composites Part A: Applied Science and Manufacturing

JF - Composites Part A: Applied Science and Manufacturing

M1 - 106023

ER -

Novel TAPE termination method for automated fibre placement: cutting characteristics and delamination suppression

Abstract

Keywords

Access to Document

Handle.net

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Research output

Delamination suppression in tapered unidirectional laminates with multiple ply drops using a tape scarfing technique

Projects

EPSRC First grant: Novel Tow Termination Technology for High-Quality AFP Production of Composite Structures with Blended Ply Drop-offs

Cite this