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ISO: 6721	Part: 3	Published: 1994	Contact: BSI
Title	Plastics - Determination of dynamic mechanical properties - Flexural vibration - Resonance-curve method.
Scope	This international standard specifies a bending vibration method based upon resonance curves for determining the flexural complex modulus Ef* of homogeneous plastics and the damping properties of laminated plastics intended for acoustic insulation, for example systems consisting of a metal sheet coated with a damping plastic layer, or sandwich systems consisting of two sheet-metal layers with an intermediate plastic layer. For many purposes, it is useful to determine these properties as a function of temperature and frequency.
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