Multiscale stochastic analysis of FRP based on variability in fiber volume fraction, epoxy stiffness and strength

Seyed Hamid Reza Sanei; Eric M. Jensen; Ray S. Fertig

Multiscale stochastic analysis of FRP based on variability in fiber volume fraction, epoxy stiffness and strength

Seyed Hamid Reza Sanei, Eric M. Jensen, Ray S. Fertig

School of Engineering (Behrend)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Scopus citations

Abstract

For accurate prediction of composite failure, microstructural variability must be considered. The distribution of epoxy stiffness and hardness were determined by nanoindentation and used in stochastic finite element modeling. Another key microstructural feature, fiber volume fraction variability, was determined by image processing of an SEM image. Stochastic failure analysis was implemented on a hexagonal fiber packing micromechanics model to predict the initiation of failure under multiaxial loadings. Three failure criteria were employed for characterization of failure: maximum stress, von Mises, and Christensen. Failure envelopes were developed for three different reliability levels. The results revealed that the variability in epoxy strength influence the failure behavior significantly, whereas, stiffness variability has minimal effect.

Original language	English (US)
Title of host publication	56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
Publisher	American Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)	9781624103421
State	Published - Jan 1 2015
Event	56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2015 - Kissimmee, United States Duration: Jan 5 2015 → Jan 9 2015

Other

Other	56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2015
Country/Territory	United States
City	Kissimmee
Period	1/5/15 → 1/9/15

All Science Journal Classification (ASJC) codes

Civil and Structural Engineering
Architecture
Mechanics of Materials
Building and Construction

Cite this

@inproceedings{20ea2ae4113e488399ecb6037d701362,

title = "Multiscale stochastic analysis of FRP based on variability in fiber volume fraction, epoxy stiffness and strength",

abstract = "For accurate prediction of composite failure, microstructural variability must be considered. The distribution of epoxy stiffness and hardness were determined by nanoindentation and used in stochastic finite element modeling. Another key microstructural feature, fiber volume fraction variability, was determined by image processing of an SEM image. Stochastic failure analysis was implemented on a hexagonal fiber packing micromechanics model to predict the initiation of failure under multiaxial loadings. Three failure criteria were employed for characterization of failure: maximum stress, von Mises, and Christensen. Failure envelopes were developed for three different reliability levels. The results revealed that the variability in epoxy strength influence the failure behavior significantly, whereas, stiffness variability has minimal effect.",

author = "Sanei, {Seyed Hamid Reza} and Jensen, {Eric M.} and Fertig, {Ray S.}",

year = "2015",

month = jan,

day = "1",

language = "English (US)",

booktitle = "56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference",

publisher = "American Institute of Aeronautics and Astronautics Inc.",

note = "56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2015 ; Conference date: 05-01-2015 Through 09-01-2015",

}

Sanei, SHR, Jensen, EM & Fertig, RS 2015, Multiscale stochastic analysis of FRP based on variability in fiber volume fraction, epoxy stiffness and strength. in 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. American Institute of Aeronautics and Astronautics Inc., 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2015, Kissimmee, United States, 1/5/15.

Multiscale stochastic analysis of FRP based on variability in fiber volume fraction, epoxy stiffness and strength. / Sanei, Seyed Hamid Reza; Jensen, Eric M.; Fertig, Ray S.
56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. American Institute of Aeronautics and Astronautics Inc., 2015.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Multiscale stochastic analysis of FRP based on variability in fiber volume fraction, epoxy stiffness and strength

AU - Sanei, Seyed Hamid Reza

AU - Jensen, Eric M.

AU - Fertig, Ray S.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - For accurate prediction of composite failure, microstructural variability must be considered. The distribution of epoxy stiffness and hardness were determined by nanoindentation and used in stochastic finite element modeling. Another key microstructural feature, fiber volume fraction variability, was determined by image processing of an SEM image. Stochastic failure analysis was implemented on a hexagonal fiber packing micromechanics model to predict the initiation of failure under multiaxial loadings. Three failure criteria were employed for characterization of failure: maximum stress, von Mises, and Christensen. Failure envelopes were developed for three different reliability levels. The results revealed that the variability in epoxy strength influence the failure behavior significantly, whereas, stiffness variability has minimal effect.

AB - For accurate prediction of composite failure, microstructural variability must be considered. The distribution of epoxy stiffness and hardness were determined by nanoindentation and used in stochastic finite element modeling. Another key microstructural feature, fiber volume fraction variability, was determined by image processing of an SEM image. Stochastic failure analysis was implemented on a hexagonal fiber packing micromechanics model to predict the initiation of failure under multiaxial loadings. Three failure criteria were employed for characterization of failure: maximum stress, von Mises, and Christensen. Failure envelopes were developed for three different reliability levels. The results revealed that the variability in epoxy strength influence the failure behavior significantly, whereas, stiffness variability has minimal effect.

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M3 - Conference contribution

BT - 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

PB - American Institute of Aeronautics and Astronautics Inc.

T2 - 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2015

Y2 - 5 January 2015 through 9 January 2015

ER -

Multiscale stochastic analysis of FRP based on variability in fiber volume fraction, epoxy stiffness and strength

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All Science Journal Classification (ASJC) codes

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