Journal
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
Volume 75, Issue -, Pages 214-221Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijimpeng.2014.08.005
Keywords
Syntactic foam; Fracture; High strain rate; Mechanical properties; Polyurethane
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Funding
- University of Catania (Italy)
- EPSRC [EP/G042586/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G042586/1] Funding Source: researchfish
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Quasi-static and dynamic experiments are conducted to characterise the mechanical response of a syntactic foam comprising hollow glass microballoons in a polyurethane matrix. Stress versus strain histories are measured in uniaxial tension and compression as well as in pure shear, at strain rates ranging from 10(-4) to 10(3)s(-1), via non-standard experimental techniques; quasi-static in-situ tests are conducted to visualise the deformation mechanisms in tension and compression. The material displays a pronounced sensitivity to the imposed strain rate and relatively high tensile and shear ductility at both low and high strain rates. A tension/compression asymmetry is displayed in quasi-static tests but is lost at high rates of strain. (C) 2014 Elsevier Ltd. All rights reserved.
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