Particle Size Effect On Load Transfer In Single Particle Composite Samples Via X-Ray Difiraction

Abstract

Particulate composites are widely used in many aerospace applications including protective coatings, adhesives, or structures, and their mechanical properties and behavior have gained increasing significance. The addition of modifiers such as alumina generally leads to improved mechanical properties. In this work, samples with an isolated alumina particle embedded in an epoxy matrix were created to replicate the ideal assumptions for many particulate mechanics models. The effect of particle size on load transfer is determined here using a unique X-Ray Difiraction experimental set-up at the Canadian Light Source. At the Very Sensitive Elemental and Structural Probe Employing Radiation from a Synchrotron (VESPERS) beamline, a custom miniature mechanical load frame was used to apply compressive loads to each sample. At three different compressive loads, the alumina within each sample was exposed to a hard X-ray beam which created a difiraction pattern that was collected by a 2-D detector. A trend of increasing load transfer with increasing particle size was observed during the analysis of the difiraction rings. Results from this work provide experimental insight into the effect of particle size on load transfer in single particle composites and can serve to experimentally validate the theoretical load transfer models that currently exist.

Publication Date

1-1-2015

Publication Title

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

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

84937858637 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84937858637

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