EN ISO 179-2:1999/A1:2012
(Amendment)Plastics - Determination of Charpy impact properties - Part 2: Instrumented impact test - Amendment 1: Precision data (ISO 179-2:1997/Amd 1:2011)
Plastics - Determination of Charpy impact properties - Part 2: Instrumented impact test - Amendment 1: Precision data (ISO 179-2:1997/Amd 1:2011)
1.1 This part of ISO 179 specifies a method for determining Charpy impact properties of plastics from forcedeflection diagrams. Different types of rod-shaped test specimen and test configuration, as well as test parameters
depending on the type of material, the type of test specimen and the type of notch are defined in part 1 of ISO 179. Dynamic effects such as load-cell/striker resonance, test specimen resonance and initial-contact/inertia peaks are described (see figure 1, curve b, and annex A).
1.2 For the comparison between Charpy and Izod test methods, see ISO 179-1, clause 1. ISO 179-1 is suitable for characterizing the impact behaviour by the impact strength only and for using apparatus whose potential energy is matched approximately to the particular energy to break to be measured (see ISO 13802, annex C). This part of ISO 179 is used if a force-deflection or force-time diagram is necessary for detailed characterization of the impact behaviour, and for developing automatic apparatus, i.e. avoiding the need, mentioned above, to match energy.
1.3 For the range of materials which may be tested by this method, see ISO 179-1, clause 1.
1.4 For the general comparability of test results, see ISO 179-1, clause 1.
1.5 The method may not be used as a source of data for design calculations on components. However, the possible use of data is not the subject of this part of ISO 179. Any application of data obtained using this part of ISO 179 should be specified by a referring standard or agreed upon by the interested parties. Information on the typical behaviour of materials can be obtained by testing at different temperatures, by varying the notch radius and/or specimen thickness and by testing specimens prepared under different conditions. It is not the purpose of this part of ISO 179 to give an interpretation of the mechanism occurring at every point on the force-deflection diagram. These interpretations are a task for on-going scientific research.
1.6 The test results are comparable only if the conditions of test specimen preparation, as well as the test conditions, are the same. Comprehensive evaluation of the reaction to impact stress requires that determinations be
made as a function of deformation rate and temperature for different material variables such as crystallinity and moisture content. The impact behaviour of finished products cannot, therefore, be predicted directly from this test, but test specimens may be taken from finished products for testing by this method.
1.7 Impact strengths determined by this method may replace those determined using ISO 179-1 if comparability has been established by previous tests.
Kunststoffe - Bestimmung der Charpy-Schlageigenschaften - Teil 2: 997/Amd.1: Instrumentierte Schlagzähigkeitsprüfung - Änderung 1: Angaben zur Präzision (ISO 179-2:1997/Amd 1:2011)
Plastiques - Détermination des caractéristiques au choc Charpy - Partie 2: Essai de choc instrumenté - Amendement 1: Données de fidélité (ISO 179-2:1997/Amd 1:2011)
Polimerni materiali - Določanje udarne žilavosti po Charpyju - 2. del: Preskus udarne žilavosti z instrumentalnim prikazom - Dopolnilo 1: Podatki za natančnost (ISO 179-2:1997/Amd 1:2011)
1.1 Ta del standarda ISO 179 navaja metodo določanja udarne žilavosti polimernih materialov po Charpyju na osnovi diagramov sila/deformacija. Različne vrste preskusnega vzorca v obliki palice, preskusne konfiguracije ter preskusnih parametrov
glede na vrsto materiala, vrsto preskusnega vzorca in vrsto zareze so določene v 1. delu standarda ISO 179. Opisani so dinamični učinki, kot so resonanca obremenitvene celice/udarnega kladiva, resonanca preskusnega vzorca in najvišje vrednosti začetnega stika/inercije (glej sliko 1, krivuljo b, dodatek A).
1.2 Za primerjavo preskusnih metod po Charpyju in Izodu glej točko 1 standarda ISO 179-1. ISO 179-1 je primeren za opis udarnega vedenja izključno glede na moč trka in uporabo aparata, katerega potencialna energija se približno ujema s količino energijo preloma, ki je predmet merjenja (glej ISO 13802, dodatek C) Ta del standarda ISO 179 se uporablja, če je diagram sila/deformacija ali sila/čas nujen za podroben opis udarnega vedenja in za razvoj samodejnega aparata, t.j. v izogib zgoraj omenjenemu ujemanju energije.
1.3 Za nabor materialov, ki se lahko preskušajo s to metodo, si glej točko 1 standarda ISO 179-1.
1.4 Za splošno primerjavo rezultatov preskusa glej točko 1 standarda ISO 179-1.
1.5 Metode se ne sme uporabljati kot vir podatkov za izračune v fazi zasnove komponent. Vendar možnost uporabe podatkov ni predmet tega dela standarda ISO 179. Vsaka uporaba podatkov, pridobljenih z uporabo tega dela standarda ISO 179, bi morala biti določena z referenčnim standardom ali dogovorjena med zainteresiranimi strankami. Podatke o značilnem vedenju materialov je mogoče pridobiti s preskušanjem pri različnih temperaturah, spreminjanjem premera zareze in/ali debeline vzorca ter preskušanjem vzorcev, pripravljenih pri različnih pogojih. Namen tega dela standarda ISO 179 ni razlaga mehanizma, ki deluje na vsaki točki diagrama sila-deformacija. Te razlage so naloga aktualnih znanstvenih raziskav.
1.6 Rezultati preskusa so primerljivi le v primeru, če so pogoji priprave preskusnih vzorcev in preskusni pogoji enaki. Celovito vrednotenje reakcije na udarec zahteva, da so ugotovitve
opravljene kot funkcija stopnje deformacije in temperature za različne spremenljivke materiala, kot sta kristaliničnost in vsebnost vlage. Udarnega vedenja končnih proizvodov zato ni mogoče napovedati neposredno s tem preskusom, ampak so preskusni vzorci za testiranje s to metodo lahko vzeti iz nabora končnih izdelkov.
1.7 Udarne moči, določene s to metodo, lahko zamenjajo tiste, ki so določene s standardom ISO 179-1, če smo s predhodnimi preskusi ugotovili, da so primerljive.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2014
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Plastics - Determination of Charpy impact properties - Part 2: Instrumented impact test -
Amendment 1: Precision data (ISO 179-2:1997/Amd 1:2011)
Kunststoffe - Bestimmung der Charpy-Schlageigenschaften - Teil 2: 997/Amd.1:
Instrumentierte Schlagzähigkeitsprüfung - Änderung 1: Angaben zur Präzision (ISO 179-
2:1997/Amd 1:2011)
Plastiques - Détermination des caractéristiques au choc Charpy - Partie 2: Essai de choc
instrumenté - Amendement 1: Données de fidélité (ISO 179-2:1997/Amd 1:2011)
Ta slovenski standard je istoveten z: EN ISO 179-2:1999/A1:2012
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 179-2:1999/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2012
ICS 83.080.01
English Version
Plastics - Determination of Charpy impact properties - Part 2:
Instrumented impact test - Amendment 1: Precision data (ISO
179-2:1997/Amd 1:2011)
Plastiques - Détermination des caractéristiques au choc Kunststoffe - Bestimmung der Charpy-Schlageigenschaften
Charpy - Partie 2: Essai de choc instrumenté - - Teil 2: 997/Amd.1: Instrumentierte
Amendement 1: Données de fidélité (ISO 179-2:1997/Amd Schlagzähigkeitsprüfung - Änderung 1: Angaben zur
1:2011) Präzision (ISO 179-2:1997/Amd 1:2011)
This amendment A1 modifies the European Standard EN ISO 179-2:1999; it was approved by CEN on 9 March 2012.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant 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 amendment 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
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© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 179-2:1999/A1:2012: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
The text of EN ISO 179-2:1997/Amd 1:2011 has been prepared by Technical Committee ISO/TC 61 “Plastics”
of the International Organization for Standardization (ISO) has been taken over as EN ISO 179-
2:1999/A1:2012 to the European Standard by 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 October 2012, and conflicting national standards shall be withdrawn at
the latest by October 2012.
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.
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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 179-2:1997/Amd 1:2011 has been approved by CEN as a EN ISO 179-2:1999/A1:2012
without any modification.
INTERNATIONAL ISO
STANDARD 179-2
First edition
1997-12-15
AMENDMENT 1
2011-06-15
Plastics — Determination of Charpy
impact properties —
Part 2:
Instrumented impact test
AMENDMENT 1: Precision data
Plastiques — Détermination des caractéristiques au choc Charpy —
Partie 2: Essai de choc instrumenté
AMENDEMENT 1: Données de fidélité
Reference number
ISO 179-2:1997/Amd.1:2011(E)
©
ISO 2011
ISO 179-2:1997/Amd.1:2011(E)
© ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or
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