Opening and mixed mode fracture processes in a quasi-brittle material via digital imaging

Qing Lin; Huina Yuan; Luigi Biolzi; Joseph F. Labuz

doi:10.1016/j.engfracmech.2014.07.028

Opening and mixed mode fracture processes in a quasi-brittle material via digital imaging

Qing Lin, Huina Yuan, Luigi Biolzi, Joseph F. Labuz

Civil, Environmental, and Geo- Engineering

Research output: Contribution to journal › Article › peer-review

138 Scopus citations

Abstract

Fracture tests were performed on sandstone specimens under three-point bending with a variety of notch positions to achieve K_II/. K_I= 0-12%. At peak load, the maximum crack opening displacement measured by digital image correlation was 45. μm under mixed mode loading and 30. μm under mode I, and these values were used to determine the length of the cohesive zone: 10-12. mm for mixed mode and 5-7. mm for mode I. For mixed mode fracture, the displacement in the cohesive zone was identified to be opening only, while sliding and opening were detected along the remaining length.

Original language	English (US)
Pages (from-to)	176-193
Number of pages	18
Journal	Engineering Fracture Mechanics
Volume	131
DOIs	https://doi.org/10.1016/j.engfracmech.2014.07.028
State	Published - Aug 7 2014

Bibliographical note

Publisher Copyright:
© 2014 Elsevier Ltd.

Keywords

Cohesive zone
Digital image correlation (DIC)
Fracture initiation and propagation
Mixed mode fracture
Quasi-brittle material

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10.1016/j.engfracmech.2014.07.028

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title = "Opening and mixed mode fracture processes in a quasi-brittle material via digital imaging",

abstract = "Fracture tests were performed on sandstone specimens under three-point bending with a variety of notch positions to achieve KII/. KI= 0-12%. At peak load, the maximum crack opening displacement measured by digital image correlation was 45. μm under mixed mode loading and 30. μm under mode I, and these values were used to determine the length of the cohesive zone: 10-12. mm for mixed mode and 5-7. mm for mode I. For mixed mode fracture, the displacement in the cohesive zone was identified to be opening only, while sliding and opening were detected along the remaining length.",

keywords = "Cohesive zone, Digital image correlation (DIC), Fracture initiation and propagation, Mixed mode fracture, Quasi-brittle material",

author = "Qing Lin and Huina Yuan and Luigi Biolzi and Labuz, {Joseph F.}",

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doi = "10.1016/j.engfracmech.2014.07.028",

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T1 - Opening and mixed mode fracture processes in a quasi-brittle material via digital imaging

AU - Lin, Qing

AU - Yuan, Huina

AU - Biolzi, Luigi

AU - Labuz, Joseph F.

PY - 2014/8/7

Y1 - 2014/8/7

N2 - Fracture tests were performed on sandstone specimens under three-point bending with a variety of notch positions to achieve KII/. KI= 0-12%. At peak load, the maximum crack opening displacement measured by digital image correlation was 45. μm under mixed mode loading and 30. μm under mode I, and these values were used to determine the length of the cohesive zone: 10-12. mm for mixed mode and 5-7. mm for mode I. For mixed mode fracture, the displacement in the cohesive zone was identified to be opening only, while sliding and opening were detected along the remaining length.

AB - Fracture tests were performed on sandstone specimens under three-point bending with a variety of notch positions to achieve KII/. KI= 0-12%. At peak load, the maximum crack opening displacement measured by digital image correlation was 45. μm under mixed mode loading and 30. μm under mode I, and these values were used to determine the length of the cohesive zone: 10-12. mm for mixed mode and 5-7. mm for mode I. For mixed mode fracture, the displacement in the cohesive zone was identified to be opening only, while sliding and opening were detected along the remaining length.

KW - Cohesive zone

KW - Digital image correlation (DIC)

KW - Fracture initiation and propagation

KW - Mixed mode fracture

KW - Quasi-brittle material

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M3 - Article

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VL - 131

SP - 176

EP - 193

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

ER -

Opening and mixed mode fracture processes in a quasi-brittle material via digital imaging

Abstract

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Keywords

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