ISO - 6721-3
Plastics - Determination of Dynamic Mechanical Properties - Part 3: Flexural Vibration - Resonance-Curve Method
|Publication Date:||1 November 1994|
|ICS Code (Plastics in general):||83.080.01|
This part of ISO 6721 specifies a bending-vibration method based upon resonance curves for determining the flexural complex modulus E; 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.