Uniaxial strength of a composite array of overlaid and aligned prepreg platelets

By Sergey Kravchenko1, Drew Sommer1, Byron Pipes1

1. Purdue University

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Abstract

The tensile strength of a discontinuous composite system consisting of aligned, unidirectional prepreg platelets is predicted by performing progressive damage analyses in a periodic representative volume element. Interlaminar and in-plane damage mechanisms are combined to yield failure characteristics of the meso-structure. The length-to-thickness ratio of the platelet was found to be the primary variable for control of system strength and failure mode. A critical platelet aspect ratio was determined as that ratio wherein system strength is maximized. Further, composite strength variability was shown to be vary inversely with aspect ratio, while attaining a minimum at the critical aspect ratio.

Cite this work

Researchers should cite this work as follows:

  • Sergey Kravchenko; Drew Sommer; Byron Pipes (2019), "Uniaxial strength of a composite array of overlaid and aligned prepreg platelets," https://cdmhub.org/resources/1816.

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