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Broad Bandwidth Study of the Topography of the Fracture Surface of Energetic Materials

Published online by Cambridge University Press:  28 February 2011

M. Yvonne D. Lanzerotti ,
James J. Pinto  and
Allan Wolfe
M. Yvonne D. Lanzerotti
Affiliation:
US Army ARDEC, Picatinny Arsenal, NJ 07806-5000
James J. Pinto
Affiliation:
US Army ARDEC, Picatinny Arsenal, NJ 07806-5000
Allan Wolfe
Affiliation:
Department of Physics, New York City Technical College, Brooklyn, NY 11021
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Abstract

The Z,X coordinates of the fracture surfaces of TNT have been measured witha stylus profilometer. The fracture surfaces of the material under study are obtained by accelerating prepared samples in anultracentrifuge. When the tensile or shear strength is exceeded a fracture surface is obtained. Usingdiamond and sapphire styli the topography of the fracture surface has been studied from a wavelength of 1.0 micron to nearly 1.0 centimeter. The powerspectra have been calculated from the data using a prolate spheroidal data window in the horizontal space domain prior to the employment of the fast Fourier transform algorithm. The power spectra are found to decrease with increasing spatial frequency. Peaks are observed in the low frequency region of the power spectra and indicate that much of the fracture is occurring atgrain boundaries.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 140: Symposium S – New Materials Approaches to Tribology: Theory and Applications , 1988 , 411
Copyright
Copyright © Materials Research Society 1989

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