Extreme thermal expansion, piezoelectricity, and other coupled field properties in composites with a negative stiffness phase
نویسندگان
چکیده
منابع مشابه
Extreme thermal expansion, piezoelectricity, and other coupled field properties in composites with a negative stiffness phase
Particulate composites with negative stiffness inclusions in a viscoelastic matrix are shown to have higher thermal expansion than that of either constituent and exceeding conventional bounds. It is also shown theoretically that other extreme linear coupled field properties including piezoelectricity and pyroelectricity occur in layerand fiber-type piezoelectric composites, due to negative incl...
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Composites with negative stiffness inclusions in a viscoelastic matrix are shown to have higher stiffness and mechanical damping tandelta than that of either constituent and exceeding conventional bounds. The causal mechanism is a greater deformation in and near the inclusions than the composite as a whole. Though a block of negative stiffness is unstable, negative stiffness inclusions in a com...
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Introduction Many materials which we encounter in everyday life expand on heating. This fact of life is easily highlighted with a simple experiment that we are all familiar with and involves a metallic sphere passing through a metal ring. At room temperature, the sphere is of such a size that it can easily pass through the ring, but after the sphere is heated, it will have expanded with the res...
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ژورنال
عنوان ژورنال: Journal of Applied Physics
سال: 2001
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.1413947