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ILNAS-EN ISO 6721-1:2019
Edition
05/2019
Plastics - Determination of dynamic mechanical properties - Part 1: General principles (ISO 6721-1:2019)
Plastics - Determination of dynamic mechanical properties - Part 1: General principles (ISO 6721-1:2019)
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Abstract
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. This document specifies the definitions and describes the general principles including all aspects that are common to the individual test methods described in the subsequent parts.
Different deformation modes can 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.
Status
| Standard - Active |
Origin
| Technical Committee : |
| CEN/TC 249 : Plastics |
Implementation
| start of the vote on the project | 15/02/2018 | date of ratification (dor) | 08/06/2018 | |||
| end of the vote on the project | 07/05/2018 | date of anouncement (doa) | 31/08/2019 | |||
| start of the vote on the final project | 15/04/2019 | date of publication (dop) | 30/11/2019 | |||
| end of the vote on the final project | 11/06/2019 | date of withdrawal (dow) | 30/11/2019 |
|
Publication Official Journal
of the Grand-Duchy of Luxembourg |
18/06/2019 |
| Reference | Mémorial A N° 420 |
Relations
| Relations to older standards |
| ILNAS-EN ISO 6721-1:2011 |
| Relations to international standards |
| ISO 6721-1 |
| ISO 6721-1:2019 |
International Classification for Standards (ICS codes) :
| 83.080.01 : Plastics in general |
