Resumen
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.
Informaciones generales
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Estado: PublicadoFecha de publicación: 2021-02Etapa: Norma Internacional publicada [60.60]
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Edición: 2Número de páginas: 13
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Comité Técnico :ISO/TC 61/SC 5ICS :83.080.01
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Ciclo de vida
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Anteriormente
RetiradaISO 6721-3:1994
RetiradaISO 6721-3:1994/Cor 1:1995
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Ahora