Validation of strain invariant failure analysis in an open hole off-axis specimen

We present a model that incorporates the effect of uncertainty in the microstructure of composite systems in failure analysis. The method involves a recently developed micromechanical enhancement model to integrate the effect of variability in the fiber volume fraction. The model determines the rang...

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Bibliographic Details
Published inJOM (1989) Vol. 63; no. 9; pp. 43 - 48
Main Authors Mendoza Jasso, Alvaro J., Goodsell, Johnathan E., Pipes, R. Byron, Koslowski, Marisol
Format Journal Article
LanguageEnglish
Published Boston Springer US 01.09.2011
Springer Nature B.V
Subjects
Bayesian analysis
Chemistry/Food Science
Earth Sciences
Engineering
Environment
Failure analysis
Fiber reinforced composites
Homogenization
Microstructure
Nanomechanics: Theory and Experiments
Physics
Polymers
Questioning
Shear strain
Simulation
Stress concentration
Studies
Probability Density Function
Failure Location
Matrix Phase
Effective Strain
Fiber Volume Fraction
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Summary:We present a model that incorporates the effect of uncertainty in the microstructure of composite systems in failure analysis. The method involves a recently developed micromechanical enhancement model to integrate the effect of variability in the fiber volume fraction. The model determines the range of failure angles in an open hole off-axis specimen and the uncertainty in the critical effective shear strain in the matrix phase at failure due to uncertainties in the fiber volume fraction. A Bayesian methodology is used for model validation and the Bayes factor metric is used to quantify the confidence in the model prediction.
ISSN:1047-4838
1543-1851
DOI:10.1007/s11837-011-0156-5