Title

Prediction Of Piezospectroscopic Properties With Nanoparticle Load Transfer Theories

Abstract

Embedded alumina nanoparticles acting as stress sensors enable a wide array of applications for non destructive evaluation and materials testing. This work aims to predict the stress sensitive properties of these nanocomposites through theoretical models and finite element simulations. The Eshelby model is accurate in representing the piezospectroscopic (PS) properties for low volume fractions, but modifications were needed to predict higher volume fractions. An iterative technique which uses the framework of the Eshelby model is able to predict the PS properties for intermediate volume fractions. Finite element models were developed to investigate the effects of various microstructural features on the PS properties. The introduction of isotropic interfaces and neighbouring interacting particles in the model improved correlation with experimental data for higher volume fractions. Microcracks included in the model were capable of creating correlation with experimental data for lower volume fractions. These qualitative results give insight into the direction for future nanoparticle load transfer theories. Copyright 2013 by Aurora Flight Sciences.

Publication Date

8-12-2013

Publication Title

International SAMPE Technical Conference

Number of Pages

1749-1757

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

84881183814 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84881183814

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