Applicability of linear elastic fracture mechanics to compressive damage in carbon fiber reinforced epoxy matrix composites

K. Carpentera School of Mechanical, Industrial and Manufacturing Engineering, Oregon State University, Corvallis, Oregon, USA

Y. Leia School of Mechanical, Industrial and Manufacturing Engineering, Oregon State University, Corvallis, Oregon, USA

A. Asadib Department of Engineering Technology and Industrial Distribution, Texas A&M University, College Station, Texas, USA

J. Parmigiania School of Mechanical, Industrial and Manufacturing Engineering, Oregon State University, Corvallis, Oregon, USA

A. Tabeia School of Mechanical, Industrial and Manufacturing Engineering, Oregon State University, Corvallis, Oregon, USA;c Advanced Technology and Manufacturing Institute (ATAMI), Oregon State University, Corvallis, Oregon, USACorrespondence[email protected]

Abstract

The failure of carbon fiber reinforced epoxy matrix composites has been attributed to different mechanisms involving tensile, compressive and shear failure of the fibers or the matrix. This research serves to understand whether linear elastic fracture mechanics can explain the matrix behavior under compressive loading. Experiments and finite element analysis (FEA) are used to confirm that the matrix under compressive loads follows the relationships established by linear elastic fracture mechanics. The failure load is related to the corresponding notch length, and the observed relationship is compared to the relationship defined by linear elastic fracture mechanics.

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Applicability of linear elastic fracture mechanics to compressive damage in carbon fiber reinforced epoxy matrix composites

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Applicability of linear elastic fracture mechanics to compressive damage in carbon fiber reinforced epoxy matrix composites

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