Novel experimental procedure and determination of full displacement fields of delaminating composite layer interfaces for evaluation of the mode II cohesive law

Gergely Czél; Meisam Jalalvand; Michael R. Wisnom; Luis P. Canal; Carlos D. González; Javier LLorca

doi:10.1016/j.engfracmech.2015.06.060

Novel experimental procedure and determination of full displacement fields of delaminating composite layer interfaces for evaluation of the mode II cohesive law

Gergely Czél^*, Meisam Jalalvand, Michael R. Wisnom, Luis P. Canal, Carlos D. González, Javier LLorca

^*Corresponding author for this work

Mechanical And Aerospace Engineering

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

6 Citations (Scopus)

24 Downloads (Pure)

Abstract

A novel mode II fracture test setup based on a simple tensile loading scenario with a discontinuous ply specimen is proposed in the paper as the first step towards determination of the cohesive law of composite layer interfaces. Key outputs of the procedure are the full displacement fields obtained by correlation of high resolution SEM images taken during in-situ tensile tests. Analysis of the full displacement fields at subsequent stress levels allow for unique analysis of the damage zone and direct determination of the displacement jumps across the interface. The next phase of the work is the evaluation of the shear stresses at the interface necessary to determine the cohesive law.

Original language	English
Pages (from-to)	326-337
Number of pages	12
Journal	Engineering Fracture Mechanics
Volume	149
Early online date	2 Jul 2015
DOIs	https://doi.org/10.1016/j.engfracmech.2015.06.060
Publication status	Published - 30 Nov 2015

Keywords

cohesive zone modelling
composites
delamination
in-situ SEM testing

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10.1016/j.engfracmech.2015.06.060Licence: CC BY 4.0

Czél-etal-EFM-2015-Novel-experimental-procedure-and-determination-of-full-displacement-fields-of-delaminating-composite-layerFinal published version, 3.72 MBLicence: CC BY 4.0

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title = "Novel experimental procedure and determination of full displacement fields of delaminating composite layer interfaces for evaluation of the mode II cohesive law",

abstract = "A novel mode II fracture test setup based on a simple tensile loading scenario with a discontinuous ply specimen is proposed in the paper as the first step towards determination of the cohesive law of composite layer interfaces. Key outputs of the procedure are the full displacement fields obtained by correlation of high resolution SEM images taken during in-situ tensile tests. Analysis of the full displacement fields at subsequent stress levels allow for unique analysis of the damage zone and direct determination of the displacement jumps across the interface. The next phase of the work is the evaluation of the shear stresses at the interface necessary to determine the cohesive law.",

keywords = "cohesive zone modelling, composites, delamination, in-situ SEM testing",

author = "Gergely Cz{\'e}l and Meisam Jalalvand and Wisnom, {Michael R.} and Canal, {Luis P.} and Gonz{\'a}lez, {Carlos D.} and Javier LLorca",

year = "2015",

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doi = "10.1016/j.engfracmech.2015.06.060",

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AU - Czél, Gergely

AU - Jalalvand, Meisam

AU - Wisnom, Michael R.

AU - Canal, Luis P.

AU - González, Carlos D.

AU - LLorca, Javier

PY - 2015/11/30

Y1 - 2015/11/30

N2 - A novel mode II fracture test setup based on a simple tensile loading scenario with a discontinuous ply specimen is proposed in the paper as the first step towards determination of the cohesive law of composite layer interfaces. Key outputs of the procedure are the full displacement fields obtained by correlation of high resolution SEM images taken during in-situ tensile tests. Analysis of the full displacement fields at subsequent stress levels allow for unique analysis of the damage zone and direct determination of the displacement jumps across the interface. The next phase of the work is the evaluation of the shear stresses at the interface necessary to determine the cohesive law.

AB - A novel mode II fracture test setup based on a simple tensile loading scenario with a discontinuous ply specimen is proposed in the paper as the first step towards determination of the cohesive law of composite layer interfaces. Key outputs of the procedure are the full displacement fields obtained by correlation of high resolution SEM images taken during in-situ tensile tests. Analysis of the full displacement fields at subsequent stress levels allow for unique analysis of the damage zone and direct determination of the displacement jumps across the interface. The next phase of the work is the evaluation of the shear stresses at the interface necessary to determine the cohesive law.

KW - cohesive zone modelling

KW - composites

KW - delamination

KW - in-situ SEM testing

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Novel experimental procedure and determination of full displacement fields of delaminating composite layer interfaces for evaluation of the mode II cohesive law

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