NBN EN ISO 6721-1:2011

Plastics - Determination of dynamic mechanical properties - Part 1: General principles (ISO 6721-1:2011)

WITHDRAWN

About this standard

Languages
German, English and French
Type
NBN
Standards committee
CEN/TC 249
Status
WITHDRAWN
Publication date
29 July 2011
Replaces
NBN EN ISO 6721-1:2002
Replaced by
NBN EN ISO 6721-1:2019
ICS Code
83.080.01 (Plastics in general)
Withdrawn Date
26 June 2019

About this training

Summary

The various parts of ISO 6721 specify methods for the determination of the dynamic mechanical properties of rigid plastics within the region of linear viscoelastic behaviour. ISO 6721-1:2011 is an introductory section which includes the definitions and all aspects that are common to the individual test methods described in the subsequent parts.
Different deformation modes may produce results that are not directly comparable. For example, tensile vibration results in a stress which is uniform across the whole thickness of the specimen, whereas flexural measurements are influenced preferentially by the properties of the surface regions of the specimen.
Values derived from flexural-test data will be comparable to those derived from tensile-test data only at strain levels where the stress-strain relationship is linear and for specimens which have a homogeneous structure.