Tufting thread and density controls the mode-I fracture toughness in carbon/epoxy composite

被引：5
作者：
Verma, Kundan K. [1 ]
Viswamurthy, S. R. [1 ]
Gaddikeri, Kotresh M. [1 ]
Ramesh, S. [1 ]
Kumar, S. [2 ]
Bose, Suryasarathi [2 ]
机构：
[1] CSIR, Natl Aerosp Labs Bengaluru, Bengaluru 560017, Karnataka, India
[2] Indian Inst Sci Bengaluru, Dept Mat Engn, Bengaluru 560012, Karnataka, India
来源：
COMPOSITE STRUCTURES | 2021年 / 261卷
关键词：
Tufting; Infusion; Mode-I fracture toughness; Glass; Carbon; Kevlar;
D O I：
10.1016/j.compstruct.2020.113272
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Herein, interlaminar crack initiation and its growth in tufted carbon/epoxy composite under Mode-I loading are investigated for different thread materials and tuft densities. Two configurations of Double Cantilever Beam (DCB) test specimens are fabricated - one with 2 rows of tuft (hereafter referred to as lower tuft density) and another with 3 rows of tuft (will be referred to as higher tuft density). The crack front is arrested and delamination growth is delayed by tufting, which increases interlaminar fracture toughness(G(IC)). Higher enhancement in fracture toughness is observed for carbon thread tufted specimens followed by Kevlar and then glass thread tufted specimens. Fracture toughness of tufted specimens is about 4.5 to 10 times of untufted specimen depending on the thread material and tuft density. An increase in tuft density increases fracture toughness from 175% for Kevlar to 272% for glass threads. Fiber bridging from the parent laminate layer is observed in the untufted specimen, whereas in the tufted specimen, this phenomenon is insignificant except for bridging due to tufting thread. Fracture analysis shows that the failure is mainly due to the rupture of thread at the interface. Thread pull-out or slippage is absent exhibiting good adhesion with epoxy matrix.
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页数：7
相关论文
共 33 条
  • [21] The influence of through-thickness reinforcement geometry and pattern on delamination of fiber-reinforced composites: Part I - Experimental results
    Pappas, Georgios
    Joncas, Simon
    Michaud, Veronique
    Botsis, John
    [J]. COMPOSITE STRUCTURES, 2018, 184 : 924 - 934
  • [22] Park BY, 1997, POLYM ADVAN TECHNOL, V8, P371, DOI 10.1002/(SICI)1099-1581(199706)8:6<371::AID-PAT658>3.0.CO
  • [23] 2-I
  • [24] Pickett AK, 2007, EFFECT TUFTING RESPO
  • [25] Poursartip A, 1987, CHARACTERIZATION EDG, P22241
  • [26] Schiebel P, 2008, IND FABR ASS INT ADV
  • [27] Steven LD, 2018, INT J AEROSP MECH EN, V12
  • [28] Tan KT, 2009, MECH ENG FACULTY RES, P1096
  • [29] Treiber JWG, 2011, THESIS CRANFIELD U
  • [30] Interlaminar and intralaminar fracture toughness of uniaxial continuous and discontinuous carbon fibre epoxy composites
    Truss, RW
    Hine, PJ
    Duckett, RA
    [J]. COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 1997, 28 (07) : 627 - 636
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