Novel tape termination method for automated fibre placement: Cutting characteristics and delamination suppression

被引：20

作者：

Gordon, Tharan ^{[1
]}

Xu, Xiaodong ^{[1
]}

Wisnom, Michael R. ^{[1
]}

Kim, Byung Chul ^{[1
]}

机构：

[1] Univ Bristol, Bristol Composites Inst ACCIS, Bristol BS8 1TR, Avon, England

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2020年 / 137卷

基金：

英国工程与自然科学研究理事会;

关键词：

Prepreg; Delamination; Automated Fibre Placement (AFP); Cutting; PLY DROPS; STRENGTH; COMPOSITES; DAMAGE; COMPRESSION; DESIGN; IMPACT;

D O I：

10.1016/j.compositesa.2020.106023

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 tape 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.

引用

页数：11

共 31 条

[21] Flexural Properties of PAN- and Pitch-Based Carbon Fibers [J].

Naito, Kimiyoshi ;

Tanaka, Yoshihisa ;

Yang, Jenn-Ming ;

Kagawaz, Yutaka .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2009, 92 (01) :186-192

[22]

PELTON WR, 1995, J FORENSIC SCI, V40, P874

[23] Compressive strength of composite laminates with terminated internal plies [J].

Steeves, CA ;

Fleck, NA .

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2005, 36 (06) :798-805

[24] Analysis of laminates with ply drops [J].

Vidyashankar, BR ;

Murty, AVK .

COMPOSITES SCIENCE AND TECHNOLOGY, 2001, 61 (05) :749-758

[25]

Vizzini A, COMPOS MAT FATIGUE 5, V1995

[26]

Wisnom M, 1995, Compos Mater Fatigue Fract Fifth, P486, DOI [10.1520/STP14031S, DOI 10.1520/STP14031S]

[27] Size effects in unnotched tensile strength of unidirectional and quasi-isotropic carbon/epoxy composites [J].

Wisnom, M. R. ;

Khan, B. ;

Hallett, S. R. .

COMPOSITE STRUCTURES, 2008, 84 (01) :21-28

[28]

Wisnom MR, 2008, WOODHEAD PUBL MATER, P706, DOI 10.1533/9781845694821.5.706

[29] FAILURE OF TAPERED COMPOSITES UNDER STATIC AND FATIGUE TENSION LOADING [J].

WISNOM, MR ;

JONES, MI ;

CUI, WC .

AIAA JOURNAL, 1995, 33 (05) :911-918

[30] Delamination in asymmetrically tapered composites loaded in tension [J].

Wisnom, MR ;

Dixon, R ;

Hill, G .

COMPOSITE STRUCTURES, 1996, 35 (03) :309-322

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