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  • BSI
    BS ISO 6721-5:2019 Plastics. Determination of dynamic mechanical properties - Flexural vibration. Non-resonance method
    Edition: 2019
    $313.97
    / user per year

Description of BS ISO 6721-5:2019 2019

This document describes a flexural, non-resonance method for determining the components of the flexural complex modulus Ef* of polymers at frequencies typically in the range 0,01 Hz to 100 Hz. Higher-frequency measurements can be made, but significant errors in the dynamic properties measured are likely to result (see 10.2.2 and 10.2.3). The method is suitable for measuring dynamic storage moduli in the range 10 MPa to 200 GPa.

NOTE

Although materials with moduli less than 10 MPa can be studied, more accurate measurements of their dynamic-mechanical properties can be made using shear modes of deformation (see ISO 6721-6).

This method is particularly suited to the measurement of loss factors greater than 0,02 and can therefore be conveniently used to study the variation of dynamic properties with temperature and frequency through most of the glass-rubber relaxation region (see ISO 6721-1). The availability of data determined over wide ranges of both frequency and temperature enables master plots to be derived, using frequency/temperature shift procedures, which present dynamic properties over an extended frequency range at different temperatures.



Standard NumberBS ISO 6721-5:2019
TitlePlastics. Determination of dynamic mechanical properties - Flexural vibration. Non-resonance method
StatusConfirmed
Publication Date2019-04-29
Identical National Standard OfISO 6721-5
DescriptorsMechanical testing, Mechanical properties of materials, Complex, Plastics, Polymers, Viscosity, Dynamic viscosity, Rigidity, Angles (geometry), Dynamic testing, Rheological properties, Strain, Oscillators, Shear stress, Viscosity measurement, Frequencies, Shear strain, Plastics and rubber technology
ICS83.080.01 Plastics in general
CommitteePRI/21
ISBN978 0 580 97459 5
PublisherBSI
Pages18

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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