Fracture Mechanics Analysis of Reinforced DCB Sandwich Debond Specimen Loaded by Moments

Vishnu Saseendran; Christian Berggreen; Leif A. Carlsson

doi:10.2514/1.J056039

Fracture Mechanics Analysis of Reinforced DCB Sandwich Debond Specimen Loaded by Moments

Vishnu Saseendran, Christian Berggreen, Leif A. Carlsson

Florida Atlantic University

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Abstract

Analytical expressions for the energy release rate and mode-mixity phase angle are derived for a sandwich composite double-cantilever beam fracture specimen with the face sheets reinforced by stiff plates. The sandwich beam is considered symmetric, with identical top and bottom facesheets. Only a pure moment loading is considered. The J-integral coupled with laminate beam theory is employed to derive closed-form expression for the energy releaserate in terms of the applied moments, geometry, and material properties .A scalar quantityωis obtained to express the mode-mixity phase angle. It is shown that ω is independent of the applied loading conditions. The value of ω is found to be moderately influenced by reinforcement thicknesses.

Original language	English
Journal	A I A A Journal
Volume	56
Issue number	1
Pages (from-to)	413-422
ISSN	0001-1452
DOIs	https://doi.org/10.2514/1.J056039
Publication status	Published - 2018

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title = "Fracture Mechanics Analysis of Reinforced DCB Sandwich Debond Specimen Loaded by Moments",

abstract = "Analytical expressions for the energy release rate and mode-mixity phase angle are derived for a sandwich composite double-cantilever beam fracture specimen with the face sheets reinforced by stiff plates. The sandwich beam is considered symmetric, with identical top and bottom facesheets. Only a pure moment loading is considered. The J-integral coupled with laminate beam theory is employed to derive closed-form expression for the energy releaserate in terms of the applied moments, geometry, and material properties .A scalar quantityωis obtained to express the mode-mixity phase angle. It is shown that ω is independent of the applied loading conditions. The value of ω is found to be moderately influenced by reinforcement thicknesses.",

author = "Vishnu Saseendran and Christian Berggreen and Carlsson, {Leif A.}",

year = "2018",

doi = "10.2514/1.J056039",

language = "English",

volume = "56",

pages = "413--422",

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T1 - Fracture Mechanics Analysis of Reinforced DCB Sandwich Debond Specimen Loaded by Moments

AU - Saseendran, Vishnu

AU - Berggreen, Christian

AU - Carlsson, Leif A.

PY - 2018

Y1 - 2018

N2 - Analytical expressions for the energy release rate and mode-mixity phase angle are derived for a sandwich composite double-cantilever beam fracture specimen with the face sheets reinforced by stiff plates. The sandwich beam is considered symmetric, with identical top and bottom facesheets. Only a pure moment loading is considered. The J-integral coupled with laminate beam theory is employed to derive closed-form expression for the energy releaserate in terms of the applied moments, geometry, and material properties .A scalar quantityωis obtained to express the mode-mixity phase angle. It is shown that ω is independent of the applied loading conditions. The value of ω is found to be moderately influenced by reinforcement thicknesses.

AB - Analytical expressions for the energy release rate and mode-mixity phase angle are derived for a sandwich composite double-cantilever beam fracture specimen with the face sheets reinforced by stiff plates. The sandwich beam is considered symmetric, with identical top and bottom facesheets. Only a pure moment loading is considered. The J-integral coupled with laminate beam theory is employed to derive closed-form expression for the energy releaserate in terms of the applied moments, geometry, and material properties .A scalar quantityωis obtained to express the mode-mixity phase angle. It is shown that ω is independent of the applied loading conditions. The value of ω is found to be moderately influenced by reinforcement thicknesses.

U2 - 10.2514/1.J056039

DO - 10.2514/1.J056039

M3 - Journal article

SN - 0001-1452

VL - 56

SP - 413

EP - 422

JO - A I A A Journal

JF - A I A A Journal

IS - 1

ER -

Fracture Mechanics Analysis of Reinforced DCB Sandwich Debond Specimen Loaded by Moments

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