Shear induced toughening in bonded joints: experiments and analysis

J.G. Swadener, K.M. Liechti, Y.-M. Liang

Research output: Contribution to journalArticle

Abstract

Bonded joint specimens were fabricated from composite adherends and either an epoxy or a urethane adhesive. In mixed-mode fracture experiments, the epoxy bonded specimens generally failed by subinterfacial fracture in the composite, while specimens bonded with urethane failed very close to the adhesive/substrate interface. For the epoxy bonded specimens, fracture toughness did not change significantly with mode-mix, but for urethane bonded joints, fracture toughness increased with increasing shear load. Finite element analysis, which modeled specimens bonded with the two adhesives, showed similar trends. The different toughening behaviors for the two bonded joints can be attributed to dissipation of energy through inelastic deformation, which was insignificant in the epoxy-bonded joints but substantial when the urethane was used as the bonding agent.
Original languageEnglish
Pages (from-to)113-132
Number of pages20
JournalInternational Journal of Fracture
Volume114
Issue number2
DOIs
Publication statusPublished - 1 Mar 2002

Fingerprint

Epoxy
Toughening
Adhesives
Fracture Toughness
Fracture toughness
Experiment
Experiments
Composite
Composite materials
Mixed Mode
Finite element method
Dissipation
Substrate
Substrates
Finite Element
Energy

Keywords

  • fracture
  • adhesively bonded joints
  • cohesive zone model
  • geometric moiré
  • finite element analysis
  • mixed-mode fracture toughness

Cite this

Swadener, J.G. ; Liechti, K.M. ; Liang, Y.-M. / Shear induced toughening in bonded joints : experiments and analysis. In: International Journal of Fracture. 2002 ; Vol. 114, No. 2. pp. 113-132.
@article{c4f13e71727e49b096b518529c53c257,
title = "Shear induced toughening in bonded joints: experiments and analysis",
abstract = "Bonded joint specimens were fabricated from composite adherends and either an epoxy or a urethane adhesive. In mixed-mode fracture experiments, the epoxy bonded specimens generally failed by subinterfacial fracture in the composite, while specimens bonded with urethane failed very close to the adhesive/substrate interface. For the epoxy bonded specimens, fracture toughness did not change significantly with mode-mix, but for urethane bonded joints, fracture toughness increased with increasing shear load. Finite element analysis, which modeled specimens bonded with the two adhesives, showed similar trends. The different toughening behaviors for the two bonded joints can be attributed to dissipation of energy through inelastic deformation, which was insignificant in the epoxy-bonded joints but substantial when the urethane was used as the bonding agent.",
keywords = "fracture, adhesively bonded joints, cohesive zone model , geometric moir{\'e}, finite element analysis, mixed-mode fracture toughness",
author = "J.G. Swadener and K.M. Liechti and Y.-M. Liang",
note = "Copyright 2008 Elsevier B.V., All rights reserved.",
year = "2002",
month = "3",
day = "1",
doi = "10.1023/A:1015013618976",
language = "English",
volume = "114",
pages = "113--132",
journal = "International Journal of Fracture",
issn = "0376-9429",
publisher = "Springer",
number = "2",

}

Shear induced toughening in bonded joints : experiments and analysis. / Swadener, J.G.; Liechti, K.M.; Liang, Y.-M.

In: International Journal of Fracture, Vol. 114, No. 2, 01.03.2002, p. 113-132.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Shear induced toughening in bonded joints

T2 - experiments and analysis

AU - Swadener, J.G.

AU - Liechti, K.M.

AU - Liang, Y.-M.

N1 - Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2002/3/1

Y1 - 2002/3/1

N2 - Bonded joint specimens were fabricated from composite adherends and either an epoxy or a urethane adhesive. In mixed-mode fracture experiments, the epoxy bonded specimens generally failed by subinterfacial fracture in the composite, while specimens bonded with urethane failed very close to the adhesive/substrate interface. For the epoxy bonded specimens, fracture toughness did not change significantly with mode-mix, but for urethane bonded joints, fracture toughness increased with increasing shear load. Finite element analysis, which modeled specimens bonded with the two adhesives, showed similar trends. The different toughening behaviors for the two bonded joints can be attributed to dissipation of energy through inelastic deformation, which was insignificant in the epoxy-bonded joints but substantial when the urethane was used as the bonding agent.

AB - Bonded joint specimens were fabricated from composite adherends and either an epoxy or a urethane adhesive. In mixed-mode fracture experiments, the epoxy bonded specimens generally failed by subinterfacial fracture in the composite, while specimens bonded with urethane failed very close to the adhesive/substrate interface. For the epoxy bonded specimens, fracture toughness did not change significantly with mode-mix, but for urethane bonded joints, fracture toughness increased with increasing shear load. Finite element analysis, which modeled specimens bonded with the two adhesives, showed similar trends. The different toughening behaviors for the two bonded joints can be attributed to dissipation of energy through inelastic deformation, which was insignificant in the epoxy-bonded joints but substantial when the urethane was used as the bonding agent.

KW - fracture

KW - adhesively bonded joints

KW - cohesive zone model

KW - geometric moiré

KW - finite element analysis

KW - mixed-mode fracture toughness

UR - http://www.scopus.com/inward/record.url?scp=0036506592&partnerID=8YFLogxK

UR - http://link.springer.com/article/10.1023%2FA%3A1015013618976

U2 - 10.1023/A:1015013618976

DO - 10.1023/A:1015013618976

M3 - Article

AN - SCOPUS:0036506592

VL - 114

SP - 113

EP - 132

JO - International Journal of Fracture

JF - International Journal of Fracture

SN - 0376-9429

IS - 2

ER -