EN ISO 844:2014
(Main)Rigid cellular plastics - Determination of compression properties (ISO 844:2014)
Rigid cellular plastics - Determination of compression properties (ISO 844:2014)
ISO 844:2014 specifies a method of determining a) the compressive strength and corresponding relative deformation, or b) the compressive stress at 10 % relative deformation, and c) when desired, the compressive modulus of rigid cellular plastics.
There are two procedures:
- Procedure A employs crosshead motion for determination of compressive properties. Procedure A is intended to be used when compressive stress at 10 % relative deformation has to be determined.
- Procedure B employs strain measuring devices mounted on the specimen (contact extensometer) or similar device which measures directly sample deformation. Procedure B is intended to be used when compressive modulus has to be determined.
Harte Schaumstoffe - Bestimmung der Druckeigenschaften (ISO 844:2014)
Diese Internationale Norm legt ein Verfahren fest, mit dem für harte Schaumstoffe folgende Werkstoffkenn-werte zu bestimmen sind:
a) die Druckfestigkeit und die entsprechende Stauchung
oder
b) die Druckspannung bei 10 % Stauchung
und
c) wenn gewünscht, der Kompressionsmodul.
Es gibt zwei Verfahren:
- Verfahren A
Stellt Traverse Bewegung bereit zur Bestimmung der Druckeigenschaften.
Verfahren A ist zur Verwendung vorgesehen, wenn die Druckspannung bei 10% relativer Verformung zu bestimmen ist.
- Verfahren B Stellt Dehnungsmesseinrichtungen oder ähnliche Einrichtungen bereit, die auf der Probe montiert ist (Kontakt mit Längenänderungsaufnehmer) und die Verformung der Probe misst. Verfahren B ist zur Verwendung vorgesehen, wenn das Druckmodul zu bestimmen ist.
ANMERKUNG Druckfestigkeit (bei maximaler Belastung) kann entweder mit Verfahren A oder B bestimmt werden.
Plastiques alvéolaires rigides - Détermination des caractéristiques de compression (ISO 844:2014)
L'ISO 844:2014 spécifie une méthode de détermination a) de la résistance à la compression et de la déformation relative correspondante, ou b) de la contrainte en compression à 10 % de déformation relative, et c) lorsque cela est souhaitable, du module de compression des plastiques alvéolaires rigides.
Il existe deux modes opératoires:
- le Mode opératoire A utilise le mouvement de la traverse pour la détermination des propriétés en compression. Le Mode opératoire A est destiné à être utilisé lorsque la contrainte en compression à 10 % de déformation relative doit être déterminée.
- le Mode opératoire B utilise des dispositifs de mesure de la déformation fixés sur l'éprouvette (extensomètre par contact) ou un dispositif similaire qui mesure directement la déformation de l'éprouvette. Le Mode opératoire B est destiné à être utilisé lorsque le module en compression doit être déterminé.
Penjeni polimerni materiali - Trde pene - Ugotavljanje lastnosti stiskanja (ISO 844:2014)
Standard EN ISO 844 določa metodo za ugotavljanje: a) tlačne trdnosti in ustrezne relativne deformacije ali b) tlačne napetosti pri 10-odstotni relativni deformaciji in) tlačne sile togih penjenih polimernih materialov (po potrebi). Na voljo sta dva postopka: - Postopek A za ugotavljanje tlačnih lastnosti uporablja križno gibanje. Postopek A se uporablja pri določanju tlačne napetosti pri 10-odstotni relativni deformaciji. - Postopek B uporablja naprave za merjenje natezanja, ki so nameščene na preskušancu (kontaktni ekstenzometer), ali podobne naprave, ki merijo neposredno deformacijo vzorca. Postopek B se uporablja pri določanju tlačne sile.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 844:2014
01-oktober-2014
1DGRPHãþD
SIST EN ISO 844:2009
Penjeni polimerni materiali - Trde pene - Ugotavljanje lastnosti stiskanja (ISO
844:2014)
Rigid cellular plastics - Determination of compression properties (ISO 844:2014)
Harte Schaumstoffe - Bestimmung der Druckeigenschaften (ISO 844:2014)
Plastiques alvéolaires rigides - Détermination des caractéristiques de compression (ISO
844:2014)
Ta slovenski standard je istoveten z: EN ISO 844:2014
ICS:
83.100 Penjeni polimeri Cellular materials
SIST EN ISO 844:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN ISO 844:2014
---------------------- Page: 2 ----------------------
SIST EN ISO 844:2014
EUROPEAN STANDARD
EN ISO 844
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2014
ICS 83.100 Supersedes EN ISO 844:2009
English Version
Rigid cellular plastics - Determination of compression properties
(ISO 844:2014)
Plastiques alvéolaires rigides - Détermination des Harte Schaumstoffe - Bestimmung der Druckeigenschaften
caractéristiques de compression (ISO 844:2014) (ISO 844:2014)
This European Standard was approved by CEN on 7 July 2014.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 844:2014 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 844:2014
EN ISO 844:2014 (E)
Contents Page
Foreword .3
2
---------------------- Page: 4 ----------------------
SIST EN ISO 844:2014
EN ISO 844:2014 (E)
Foreword
This document (EN ISO 844:2014) 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 February 2015, and conflicting national standards shall be withdrawn
at the latest by February 2015.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 844:2009.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 844:2014 has been approved by CEN as EN ISO 844:2014 without any modification.
3
---------------------- Page: 5 ----------------------
SIST EN ISO 844:2014
---------------------- Page: 6 ----------------------
SIST EN ISO 844:2014
INTERNATIONAL ISO
STANDARD 844
Sixth edition
2014-08-01
Rigid cellular plastics —
Determination of compression
properties
Plastiques alvéolaires rigides — Détermination des caractéristiques
de compression
Reference number
ISO 844:2014(E)
©
ISO 2014
---------------------- Page: 7 ----------------------
SIST EN ISO 844:2014
ISO 844:2014(E)
COPYRIGHT PROTECTED DOCUMENT
©
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.