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EN ISO 6721-3:2021

(Main)

Plastics - Determination of dynamic mechanical properties - Part 3: Flexural vibration - Resonance-curve method (ISO 6721-3:2021)

Plastics - Determination of dynamic mechanical properties - Part 3: Flexural vibration - Resonance-curve method (ISO 6721-3:2021)

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.

Kunststoffe - Bestimmung dynamisch-mechanischer Eigenschaften - Teil 3: Biegeschwingung - Resonanzkurven-Verfahren (ISO 6721-3:2021)

Dieses Dokument legt ein Biegeschwingverfahren fest, bei dem mit Hilfe von Resonanzkurven der komplexe Biegemodul E*f von homogenen Kunststoffen und die Dämpfungseigenschaften von geschichteten Kunststoffen bestimmt werden, die für die Körperschall-Isolation vorgesehen sind. Dies sind beispielsweise Systeme aus Metall¬blech mit dämpfendem Kunststoffbelag oder Verbundsysteme, die aus zwei Metallblechen mit einer Kunststoffzwischenschicht bestehen. Für viele Zwecke ist es vorteilhaft, diese Eigenschaften als Funktion von Temperatur und Frequenz zu bestimmen.

Plastiques - Détermination des propriétés mécaniques dynamiques - Partie 3: Vibration en flexion - Méthode en résonance (ISO 6721-3:2021)

Le présent document spécifie une méthode de vibration en flexion basée sur les courbes de résonance pour la détermination du module complexe en flexion E*f de plastiques homogènes et des propriétés d’amortissement de plastiques stratifiés spécialement destinés à l’isolation acoustique, par exemple des systèmes consistant en une feuille métallique revêtue d’une couche de plastique amortissant ou des systèmes en sandwichs consistant en deux feuilles métalliques avec une couche intermédiaire en plastique. Pour beaucoup d’usages, il est utile de déterminer ces propriétés en fonction de la température et de la fréquence.

Polimerni materiali - Določevanje dinamičnih mehanskih lastnosti - 3. del: Upogibne vibracije - Metoda resonančne krivulje (ISO 6721-3:2021)

General Information

Status
Published
Publication Date
02-Mar-2021
Withdrawal Date
29-Sep-2021
ICS
83.080.01 - Plastics in general
Technical Committee
CEN/TC 249 - Plastics
Drafting Committee
CEN/TC 249/SC 1/WG 3 - Mechanical properties and preparation of test specimens
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
03-Mar-2021
Completion Date
03-Mar-2021
Ref Project
SIST EN ISO 6721-3:2021 - Plastics - Determination of dynamic mechanical properties - Part 3: Flexural vibration - Resonance-curve method (ISO 6721-3:2021)

Relations

Replaces
EN ISO 6721-3:1996 - Plastics - Determination of dynamic mechanical properties - Part 3: Flexural vibration - Resonance-curve method (ISO 6721-3:1994, including Technical Corrigendum 1: 1995)
Effective Date
10-Mar-2021

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SLOVENSKI STANDARD
SIST EN ISO 6721-3:2021
01-maj-2021
Nadomešča:
SIST EN ISO 6721-3:1999
Polimerni materiali - Določevanje dinamičnih mehanskih lastnosti - 3. del:
Upogibne vibracije - Metoda resonančne krivulje (ISO 6721-3:2021)
Plastics - Determination of dynamic mechanical properties - Part 3: Flexural vibration -
Resonance-curve method (ISO 6721-3:2021)
Kunststoffe - Bestimmung dynamisch-mechanischer Eigenschaften - Teil 3:
Biegeschwingung - Resonanzkurven-Verfahren (ISO 6721-3:2021)
Plastiques - Détermination des propriétés mécaniques dynamiques - Partie 3: Vibration
en flexion - Méthode en résonance (ISO 6721-3:2021)
Ta slovenski standard je istoveten z: EN ISO 6721-3:2021
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
SIST EN ISO 6721-3:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 6721-3:2021

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SIST EN ISO 6721-3:2021


EN ISO 6721-3
EUROPEAN STANDARD

NORME EUROPÉENNE

March 2021
EUROPÄISCHE NORM
ICS 83.080.01 Supersedes EN ISO 6721-3:1996
English Version

Plastics - Determination of dynamic mechanical properties
- Part 3: Flexural vibration - Resonance-curve method (ISO
6721-3:2021)
Plastiques - Détermination des propriétés mécaniques Kunststoffe - Bestimmung dynamisch-mechanischer
dynamiques - Partie 3: Vibration en flexion - Méthode Eigenschaften - Teil 3: Biegeschwingung -
en résonance (ISO 6721-3:2021) Resonanzkurven-Verfahren (ISO 6721-3:2021)
This European Standard was approved by CEN on 14 February 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6721-3:2021 E
worldwide for CEN national Members.

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SIST EN ISO 6721-3:2021
EN ISO 6721-3:2021 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 6721-3:2021
EN ISO 6721-3:2021 (E)
European foreword
This document (EN ISO 6721-3:2021) has been prepared by Technical Committee ISO/TC 61 "Plastics"
in collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by
NBN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by September 2021, and conflicting national standards
shall be withdrawn at the latest by September 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 6721-3:1996.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 6721-3:2021 has been approved by CEN as EN ISO 6721-3:2021 without any
modification.

3

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SIST EN ISO 6721-3:2021

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