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One or more phases is viscoelastic
January 29th, 2010 by admin
However the resulting enhancement of the overall damping of the composite is modest, unless new materials can be found with very high relaxation strength or with a large intrinsic phase angle in the expansion. A phase angle in the thermal expansion have been observed in several polymers, and they may be generated in composite materials in which one or more phases is viscoelastic. S., “Thermoelastic damping in visco elastic foam mattresses materials with a complex coefficient of thermal expansion upon the thermoelastic relaxation mechanism is analyzed. In the frequency domain this corresponds to a single exponential creep or relaxation response in the time domain.