Design of four-point SENB specimens with stable crack growth

Jeppe Bjørn Jørgensen; Casper Kildegaard; Bent F. Sørensen

doi:10.1016/j.engfracmech.2018.01.018

Design of four-point SENB specimens with stable crack growth

Jeppe Bjørn Jørgensen^*, Casper Kildegaard, Bent F. Sørensen

^*Corresponding author for this work

LM Wind Power

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Abstract

A four-point single-edge-notch-beam (SENB) test specimen loaded in displacement control (fixed grip) is proposed for studying crack deflection at bi-material interfaces. In order to ensure stable crack growth, a novel analytical model of the four-point SENB specimen in fixed grip is derived and compared with numerical models. Model results show that the specimen should be short and thick, and the start-crack length should be deep for the crack to propagate stable towards the bi-material interface. Observations from experimental tests of four-point SENB specimens with different start-crack lengths, confirmed that the crack grows stable if the start-crack length is deep and unstable if not.

Original language	English
Journal	Engineering Fracture Mechanics
Volume	191
Pages (from-to)	168-186
Number of pages	19
ISSN	0013-7944
DOIs	https://doi.org/10.1016/j.engfracmech.2018.01.018
Publication status	Published - 2018

Keywords

Adhesive
Bonded joints
Brittle fracture
Finite element analysis
Stable crack growth

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10.1016/j.engfracmech.2018.01.018

Elsarticle numPartAModelingBLACKAccepted author manuscript, 4.47 MBLicence: CC BY-NC-ND

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title = "Design of four-point SENB specimens with stable crack growth",

abstract = "A four-point single-edge-notch-beam (SENB) test specimen loaded in displacement control (fixed grip) is proposed for studying crack deflection at bi-material interfaces. In order to ensure stable crack growth, a novel analytical model of the four-point SENB specimen in fixed grip is derived and compared with numerical models. Model results show that the specimen should be short and thick, and the start-crack length should be deep for the crack to propagate stable towards the bi-material interface. Observations from experimental tests of four-point SENB specimens with different start-crack lengths, confirmed that the crack grows stable if the start-crack length is deep and unstable if not.",

keywords = "Adhesive, Bonded joints, Brittle fracture, Finite element analysis, Stable crack growth",

author = "J{\o}rgensen, {Jeppe Bj{\o}rn} and Casper Kildegaard and S{\o}rensen, {Bent F.}",

year = "2018",

doi = "10.1016/j.engfracmech.2018.01.018",

language = "English",

volume = "191",

pages = "168--186",

journal = "Engineering Fracture Mechanics",

issn = "0013-7944",

publisher = "Elsevier",

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TY - JOUR

T1 - Design of four-point SENB specimens with stable crack growth

AU - Jørgensen, Jeppe Bjørn

AU - Kildegaard, Casper

AU - Sørensen, Bent F.

PY - 2018

Y1 - 2018

N2 - A four-point single-edge-notch-beam (SENB) test specimen loaded in displacement control (fixed grip) is proposed for studying crack deflection at bi-material interfaces. In order to ensure stable crack growth, a novel analytical model of the four-point SENB specimen in fixed grip is derived and compared with numerical models. Model results show that the specimen should be short and thick, and the start-crack length should be deep for the crack to propagate stable towards the bi-material interface. Observations from experimental tests of four-point SENB specimens with different start-crack lengths, confirmed that the crack grows stable if the start-crack length is deep and unstable if not.

AB - A four-point single-edge-notch-beam (SENB) test specimen loaded in displacement control (fixed grip) is proposed for studying crack deflection at bi-material interfaces. In order to ensure stable crack growth, a novel analytical model of the four-point SENB specimen in fixed grip is derived and compared with numerical models. Model results show that the specimen should be short and thick, and the start-crack length should be deep for the crack to propagate stable towards the bi-material interface. Observations from experimental tests of four-point SENB specimens with different start-crack lengths, confirmed that the crack grows stable if the start-crack length is deep and unstable if not.

KW - Adhesive

KW - Bonded joints

KW - Brittle fracture

KW - Finite element analysis

KW - Stable crack growth

U2 - 10.1016/j.engfracmech.2018.01.018

DO - 10.1016/j.engfracmech.2018.01.018

M3 - Journal article

SN - 0013-7944

VL - 191

SP - 168

EP - 186

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

ER -

Design of four-point SENB specimens with stable crack growth

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Keywords

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