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Dynamic Impact Characterization of Al+Fe2O3+30% Epoxy Composites Using Time Synchronized High-Speed Camera and VISAR Measurements

Published online by Cambridge University Press:  26 February 2011

Louis Ferranti Jr.  and
Naresh N. Thadhani
Louis Ferranti Jr.
Affiliation:
[email protected], Georgia Institute of Technology, Materials Science and Engineering, 771 Ferst Drive, Love Manufacturing Building, Atlanta, Georgia, 30332-0245, United States, (404) 385.6765, (404) 894.9140
Naresh N. Thadhani
Affiliation:
[email protected], Georgia Institute of Technology, Materials Science and Engineering, United States
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Abstract

Reverse Taylor anvil-on-rod impact experiments were conducted on Al+Fe2O3+30% epoxy composites to measure their viscoelastic and fracture response to dynamic loading. Impact velocities ranged from 80 to 200 m/s. High-speed camera images capturing transient deformation reveal these materials exhibit significant elastic recovery in both the longitudinal and radial directions. Images were time synchronized with free surface velocity measurements, using VISAR, to track elastic/plastic wave interactions attributed to the material’s dynamic loading response. Some specimens underwent brittle fracture once a critical areal strain was exceeded while the axial strain response appeared unaltered.

Keywords

energetic materialelastic propertiespolymer
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 896: Symposium H – Multifunctional Energetic Materials , 2005 , 0896-H06-05
Copyright
Copyright © Materials Research Society 2006

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