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

[1] Numerical simulation of impact and compression after impact of asymmetrically tapered laminated CFRP [J].

Abdulhamid, Hakim ;

Bouvet, Christophe ;

Michel, Laurent ;

Abdissiere, Jacky ;

Minot, Clement .

INTERNATIONAL JOURNAL OF IMPACT ENGINEERING, 2016, 95 :154-164

[2] Influence of internally dropped-off plies on the impact damage of asymmetrically tapered laminated CFRP [J].

Abdulhamid, Hakim ;

Bouvet, Christophe ;

Michel, Laurent ;

Aboissiere, Jacky ;

Minot, Clement .

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2015, 68 :110-120

[3] A simplified approach to the damage tolerance design of asymmetric tapered laminates. Part I: Methodology development [J].

Allegri, G. ;

Wisnom, M. R. ;

Hallett, S. R. .

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2010, 41 (10) :1388-1394

[4] Chip formation in orthogonal trimming of graphite/epoxy composite [J].

Arola, D ;

Ramulu, M ;

Wang, DH .

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 1996, 27 (02) :121-133

[5] Design and manufacturing considerations for ply drops in composite structures [J].

Cairns, DS ;

Mandell, JF ;

Scott, ME ;

Maccagnano, JZ .

COMPOSITES PART B-ENGINEERING, 1999, 30 (05) :523-534

[6]

Carrella-Payan D, 2011, 18 INT C COMP MAT, P1

[7] NEW MODEL TO PREDICT STATIC STRENGTH OF TAPERED LAMINATES [J].

CUI, WC ;

WISNOM, MR ;

JONES, M .

COMPOSITES, 1995, 26 (02) :141-146

[8] EFFECT OF STEP SPACING ON DELAMINATION OF TAPERED LAMINATES [J].

CUI, WC ;

WISNOM, MR ;

JONES, M .

COMPOSITES SCIENCE AND TECHNOLOGY, 1994, 52 (01) :39-46

[9]

Fish J, 1993, DELAMINATION PLY DRO

[10] DELAMINATION OF TAPERED COMPOSITE STRUCTURES [J].

FISH, JC ;

LEE, SW .

ENGINEERING FRACTURE MECHANICS, 1989, 34 (01) :43-54

← 1 2 3 4 →