ISO-6721-9 Plastics - Determination of dynamic mechanical properties - Part 9: Tensile vibration - Sonic-pulse propagation method

ISO-6721-9 - 2ND EDITION - CURRENT -- See the following: ISO-6721-9-1
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This document describes a pulse propagation method for determining the storage component of the complex tensile modulus E' of polymers at discrete frequencies typically in the range 3 kHz to 10 kHz. The method is suitable for measuring materials with storage moduli in the range 0,01 GPa to 200 GPa and with loss factors below 0,1 at around 10 kHz. With materials having a higher loss, significant errors in velocity measurement are introduced through decay of amplitude.

The method allows measurements to be made on thin films or fine fibres and long specimens, typically tapes of 300 mm × 5 mm × 0,1 mm or fibres of 300 mm × 0,1 mm (diameter).

This method may not be suitable for cellular plastics, composite plastics and multilayer products.




To find similar documents by classification:

83.080.01 (Plastics in general)

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Document Number

ISO 6721-9:2019

Revision Level




Publication Date

April 1, 2019

Committee Number

ISO/TC 61/SC 5