
Proceedings Paper
Ultrasonic studies of fly ash/polyurea compositesFormat | Member Price | Non-Member Price |
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Paper Abstract
Due to its excellent thermo-mechanical properties, polyurea is attracting more and more attention in blast-mitigating
applications. In order to enhance its capability of blast-induced stress-wave management, we seek to develop polyurea-based
composites in this work. Fly ash which consists of hollow particles with porous shell and low apparent density
was chosen as filler and a series of fly ash/polyurea composites with various fly ash volume fractions were fabricated.
The dynamic mechanical behavior of the composites was determined by a personal computer (PC) based ultrasonic
system in the 0.5-2MHz frequency range between -60°C to 30°C temperatures. Velocity and attenuation of both
longitudinal and shear ultrasonic waves were measured. The complex longitudinal and shear moduli were then computed
from these measurements. Combining these results provided an estimate of the complex bulk and Young’s moduli of the
fly ash/polyurea composites at high frequencies. These results will be presented and compared with those of pure
polyurea elastomer.
Paper Details
Date Published: 3 April 2013
PDF: 5 pages
Proc. SPIE 8689, Behavior and Mechanics of Multifunctional Materials and Composites 2013, 86891C (3 April 2013); doi: 10.1117/12.2012020
Published in SPIE Proceedings Vol. 8689:
Behavior and Mechanics of Multifunctional Materials and Composites 2013
Nakhiah C. Goulbourne; Hani E. Naguib, Editor(s)
PDF: 5 pages
Proc. SPIE 8689, Behavior and Mechanics of Multifunctional Materials and Composites 2013, 86891C (3 April 2013); doi: 10.1117/12.2012020
Show Author Affiliations
Jing Qiao, Harbin Institute of Technology (China)
Univ. of California, San Diego (United States)
Alireza V. Amirkhizi, Univ. of California, San Diego (United States)
Univ. of California, San Diego (United States)
Alireza V. Amirkhizi, Univ. of California, San Diego (United States)
Sia Nemat-Nasser, Univ. of California, San Diego (United States)
Gaohui Wu, Harbin Institute of Technology (China)
Gaohui Wu, Harbin Institute of Technology (China)
Published in SPIE Proceedings Vol. 8689:
Behavior and Mechanics of Multifunctional Materials and Composites 2013
Nakhiah C. Goulbourne; Hani E. Naguib, Editor(s)
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