Prediction of piezospectroscopic properties with nanoparticle load transfer theories
Paper i proceeding, 2013

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.

Nanoparticles

Microstructural features

Exhibitions

Experimental datum

Non destructive evaluation

Theoretical models

Alumina Nanoparticle

Volume fraction

Forecasting

Interacting particles

Finite element method

Microstructural evolution

Finite element simulations

Engineering education

Sensors

Iterative technique

Alumina

Författare

G. Freihofer

University of Central Florida

D. Fugon

University of Central Florida

A. Jones

University of Central Florida

Emrecan Ergin

Chalmers, Material- och tillverkningsteknik, Yt- och mikrostrukturteknik

A. Schülzgen

University of Central Florida

S. Raghavan

University of Central Florida

H. Tat

Boeing Corporation

International SAMPE Technical Conference

Vol. 2013 1749-1757

SAMPE 2013 Conference and Exhibition: Education and Green Sky - Materials Technology for a Better World;
Long Beach, USA,

Ämneskategorier

Materialteknik

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Senast uppdaterat

2021-02-18