SIST 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)
EN ISO 844 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.
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SIST EN ISO 844:2014
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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.
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SIST EN ISO 844:2014
EN ISO 844:2014 (E)
Contents Page
Foreword .3
2
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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
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SIST EN ISO 844:2014
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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
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SIST EN ISO 844:2014
ISO 844:2014(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2014
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2014 – All rights reserved
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SIST EN ISO 844:2014
ISO 844:2014(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms . 2
5 Principle . 2
6 Apparatus . 2
6.1 Compression-testing machine . 2
6.2 Devices for measuring displacement and force . 3
6.3 Instruments for measuring the dimensions of the test specimens . 3
7 Test specimens. 3
7.1 Dimensions . 3
7.2 Preparation . 4
7.3 Number . 4
7.4 Conditioning . 4
8 Procedure. 4
9 Expression of results . 5
9.1 General . 5
9.2 Compressive strength and corresponding relative deformation . 6
9.3 Compressive stress at 10 % relative deformation . 7
9.4 Compressive modulus of elasticity . 7
10 Precision . 8
11 Test report . 8
Bibliography .10
© ISO 2014 – All rights reserved iii
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SIST EN ISO 844:2014
ISO 844:2014(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any
patent rights identified during the development of the document will be in the Introduction and/or on
the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 61, Plastics, Subcommittee SC 10, Cellular plastics.
This sixth edition cancels and replaces the fifth edition (ISO 844:2007), which has been technically
revised to specify the choice of the procedure for the determination of the compressive strength and
corresponding relative deformation, the compressive stress at 10 % relative deformation and the
compressive modulus of rigid cellular plastics.
iv © ISO 2014 – All rights reserved
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SIST EN ISO 844:2014
INTERNATIONAL STANDARD ISO 844:2014(E)
Rigid cellular plastics — Determination of compression
properties
1 Scope
This International Standard 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.
NOTE Compressive strength (at maximum load) can be determined either with Procedure A and B.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 1923, Cellular plastics and rubbers — Determination of linear dimensions
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
relative deformation
ε
ratio of the reduction (in relation to its initial value) in thickness of the test specimen (Procedure A) or
of extensomete
...
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Penjeni polimerni materiali - Trde pene - Ugotavljanje lastnosti stiskanja (ISO/FDIS 844:2014)Harte Schaumstoffe - Bestimmung der Druckeigenschaften (ISO/FDIS 844:2014)Plastiques alvéolaires rigides - Détermination des caractéristiques de compression (ISO/FDIS 844:2014)Rigid cellular plastics - Determination of compression properties (ISO/FDIS 844:2014)83.100Penjeni polimeriCellular materialsICS:Ta slovenski standard je istoveten z:FprEN ISO 844 revkSIST FprEN ISO 844:2014en,fr,de01-maj-2014kSIST FprEN ISO 844:2014SLOVENSKI
STANDARD
kSIST FprEN ISO 844:2014
© ISO 2014Rigid cellular plastics — Determination of compression propertiesPlastiques alvéolaires rigides — Détermination des caractéristiques de compressionINTERNATIONAL STANDARDPlease see the administrative notes on page iiiReference numberISO/FDIS 844:2014(E)ISO/FDIS844ISO/TC 61/SC 10Secretariat: SCCVoting begins on: 2014-0Voting terminates on: 2014-0RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPOR TING DOCUMENTATION.IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.FINALDRAFTkSIST FprEN ISO 844:2014
ISO/FDIS 844:2014(E) ii © ISO 2014 – All rights reservedCOPYRIGHT PROTECTED DOCUMENT©
ISO 2014All rights reservedä Unless otherwise speci Ðiedá no part of this publication may be reproduced or utilized otherwise in any form or by any meansá electronic or mechanicalá including photocopyingá or posting on the internet or an intranetá without prior written permissionä Permission can be requested from either ISO at the address below or ISOïs member body in the country of the requester.ISO copyright of ÐiceTel. + 41 22 749 01 11Fax + 41 22 749 09 47Eæmail copyright 7isoäorgWeb www.iso.orgPublished in SwitzerlandkSIST FprEN ISO 844:2014
ISO/CEN PARALLEL PROCESSINGcessed under the ISO-lead mode of collaboration as de Ðined in the Vienna Agreementä The
Ðinal draft was established on the basis of comments received during a parallel enquiry on the draftäThis
Ðinal draft is hereby submitted to the ISO member bodies and to the CEN member bodies for a parallel twomonth approval vote in ISO and formal vote in CEN.Positive votes shall not be accompanied by comments.Negative votes shall be accompanied by the relevant technical reasons.ISO/FDIS 844:2014(E) © ISO 2014 – All rights reserved iiikSIST FprEN ISO 844:2014
ISO/FDIS 844:2014(E) iv © ISO 2014 – All rights reservedContents PageForeword .v1 Scope .12 Normative references .1uTermsanddeÐinitions .14 Symbols and abbreviated terms .25 Principle .26 Apparatus .26.1 Compressiontesting machine .26.2 Devices for measuring displacement and force .36.3 Instruments for measuring the dimensions of the test specimens .37 Test specimens.37.1 Dimensions .37.2 Preparation .47.3 Number .47.4 Conditioning .48 Procedure.49 Expression of results .59.1 General .59.2 Compressive strength and corresponding relative deformation .69.3 Compressive stress at 10 % relative deformation .7 {ä v Compressive modulus of elasticity .710 Precision .811 Test report .8Bibliography .10kSIST FprEN ISO 844:2014
ISO/FDIS 844:2014(E)Forewordthrough ISO technical committeesä Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizationsá governmental and nonægovernmentalá in liaison with ISOá also take part in the workä electrotechnical standardizationäThe procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be notedä This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rightsä ISO shall not be held responsible for identifying any or all such patent rightsä Details of any the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO speci Ðic terms and expressions related to conformity assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers The committee responsible for this document is ISO/TC 61, Plastics, Subcommittee SC 10, Cellular plastics.
z v vrevised to specify the choice of the procedure for the determination of the compressive strength and corresponding relative deformation, the compressive stress at 10 % relative deformation and the compressive modulus of rigid cellular plastics. © ISO 2014 – All rights reserved vkSIST FprEN ISO 844:2014
kSIST FprEN ISO 844:2014
Rigid cellular plastics — Determination of compression properties1 ScopeThis International Standard speci Ðies a method of determiningãa) the compressive strength and corresponding relative deformation,orb) the compressive stress at 10 % relative deformation,andc) when desired, the compressive modulus of rigid cellular plastics.There are two procedures: Procedure A employs crosshead motion for determination of compressive propertiesä Procedure A is intended to be used when compressive stress at 10 % relative deformation has to be determined. Procedure B emor similar device which measures directly sample deformationä Procedure B is intended to be used when compressive modulus has to be determined.NOTE Compressive strength (at maximum load) can be determined either with Procedure A and B.2 Normative referencesThe following documentsá in whole or in partá are normatively referenced in this document and are indispensable for its applicationä For dated referencesá only the edition cited appliesä For undated ISO 1923, Cellular plastics and rubbers — Determination of linear dimensionsuTermsanddeÐinitionsFor the purposes of this documentá the following terms and de Ðinitions applyä3.1relative deformationratio of the reduction (in relation to its initial value) in thickness of the test specimen (Procedure A) or of extensometer gauge length (Procedure B)Note
s to entryã It is expressed as a percentageäNote
t to entryã m is the relative deformation corresponding to m (see 3.2).3.2compressive strengthmmaximum compressive force Fm divided by the initial crossæsectional area of the test specimen when the relative deformation
is < 10 %FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 844:2014(E)© ISO 2014 – All rights reserved 1kSIST FprEN ISO 844:2014
ISO/FDIS 844:2014(E)3.3compressive stress at 10 % relative deformation10ratio of the compressive force F10 at 10 % relative deformation 10 to the initial crosssectional area of the test specimen3.4compressive modulus of elasticityEcompressive stress divided by the corresponding relative deformation below the proportional limitá iäeä when the relation is linear4 Symbols and abbreviated termsA0initial crosssectional area, in square millimetresEcompressive modulus of elasticityá in megapascalsFeforce corresponding to xe (conventional proportional limit), in newtonsFmmaximum force, in newtonsF10force at 10 % relative deformation, in newtonsh0initial thickness
...
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