Transcription of Viscoelasticity and dynamic mechanical testing
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Viscoelasticity and dynamic mechanical testing
1 AN004AN004 Viscoelasticity and dynamic mechanical testing A. Franck, TA Instruments GermanyKeywords: dynamic mechanical testing , Viscoelasticity , Hookean body, Newtonian fluid, relaxation time, ,VISCOELASTICITYMost materials are not purely viscous and oftenshow significant elastic behavior. Such materials arereferred to as viscoelastic materials and the keyparameter, the time determines whether viscous orelastic behavior in a slow deformation or flow processthe viscous behavior dominates, whereas in a shorttime process the material behaves predominatelyelastic.
dynamic mechanical analysis (DMA) analyzes both elastic and viscous material response simul-taneously. In this type of experiment, a motor is used to either apply a sinusoidal strain or stress to a material (in tension, bending, or shear) and the resulting stress is measured with a force transducer or the resulting strain is measured with a ...
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