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download between 0-24 hoursReleased: 2021
ISO 6721-3:2021
ISO 6721-3:2021-Plastics-Determination of dynamic mechanical properties
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Standard´s number: | ISO 6721-3:2021 |
Pages: | 13 |
Edition: | 2 |
Released: | 2021 |
DESCRIPTION
ISO 6721-3:2021
This document specifies a bending-vibration method based upon resonance curves for determining the flexural complex modulus E*f 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.