BS-EN-ISO-6603-2-2000.pdf

BRITISH STANDARD BS EN ISO 6603-2:2000 Incorporating Corrigendum Nos. 1 and 2 Plastics Determination of puncture impact behaviour of rigid plastics Part 2: Instrumented puncture testing The European Standard EN ISO 6603-2:2000 has the status of a British Standard ICS 83.080.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:35:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 6603-2:2000 This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 January 2001 © BSI 15 March 2002 ISBN 0 580 36680 4 National foreword This British Standard is the official English language version of EN ISO 6603-2:2000 including corrigendum October 2000. It is identical with ISO 6603-2:2000. It supersedes BS EN ISO 6603-2:1997 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/21, Testing of plastics, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, page ii to iv, pages 1 to 23, a blank page, the Annex ZA page and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments 13053 Corr. No. 1 April 2001Correction to EN ISO foreword 13758 Corr. No. 2 15 March 2002 Incorporation of Annex ZA Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:35:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN ISO 6603-2 October 2000 ICS 83.080.01Supersedes EN ISO 6603-2:1996 English version Plastics - Determination of puncture impact behaviour of rigid plastics - Part 2: Instrumented puncture test (ISO 6603-2:2000) Plastiques - Détermination du comportement des plastiques rigides perforés sous l'effet d'un choc - Partie 2: Essai de choc instrumenté (ISO 6603-2:2000) Kunststoffe - Bestimmung des Durchstoßverhaltens von festen Kunststoffen - Teil 2: Instrumentierter Schlagversuch (ISO 6603-2:2000) This European Standard was approved by CEN on 1 October 2000. 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 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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels © 2000 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 6603-2:2000 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:35:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI gaPe 2 I NESO 66-30:20020 CORRECTED 2002-02-06 Foreword This document (ISO 6603-2:2000) has been prepared by Technical Committee ISO/TC 198 “Plastics“ in collaboration with Technical Committee CEN/TC 249 “Plastics“, the secretariat of which is held by IBN. This document supersedes EN ISO 6603-2:1996. 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 April 2001, and conflicting national standards shall be withdrawn at the latest by April 2001. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 6603-2:2000 has been approved by CEN as a European Standard without any modifications. NOTE Normative references to International Standards are listed in annex ZA (normative). EN ISO 66032:2000 2 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:35:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 6603-2:2000(E) INTERNATIONAL STANDARD ISO 6603-2 Second edition 2000-10-01 Plastics Determination of puncture impact behaviour of rigid plastics Part 2: Instrumented impact testing Plastiques Détermination du comportement des plastiques rigides perforés sous l'effet d'un choc Partie 2: Essais de choc instrumentés EN ISO 66032:2000 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:35:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii EN ISO 66032:2000 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:35:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Contents Page Foreword.iv 1 Scope 1 2 Normative references1 3 Terms and definitions .1 4 Principle5 5 Apparatus.5 6 Test specimens9 7 Procedure.9 8 Calculations10 9 Precision.12 10 Test report12 Annex A (informative) Interpretation of complex force-deflection curves14 Annex B (informative) Friction between striker and specimen 16 Annex C (informative) Clamping of specimens19 Annex D (informative) Tough/brittle transitions.20 Annex E (informative) Influence of specimen thickness.21 Bibliography23 EN ISO 66032:2000 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:35:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv 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. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this part of ISO 6603 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 6603-2 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 2, Mechanical properties. This second edition cancels and replaces the first edition (ISO 6603-2:1989), which has been technically revised. ISO 6603 consists of the following parts, under the general title Plastics Determination of puncture impact behaviour of rigid plastics: ?Part 1: Non-instrumented impact testing ?Part 2: Instrumented impact testing Annexes A to E of this part of ISO 6603 are for information only. EN ISO 66032:2000 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:35:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 1 Plastics Determination of puncture impact behaviour of rigid plastics Part 2: Instrumented impact testing 1 Scope This part of ISO 6603 specifies a test method for the determination of puncture impact properties of rigid plastics, in the form of flat specimens, using instruments for measuring force and deflection. It is applicable if a force-deflection or force-time diagram, recorded at nominally constant striker velocity, is necessary for detailed characterization of the impact behaviour. ISO 6603-1 can be used if it is sufficient to characterize the impact behaviour of plastics by a threshold value of impact-failure energy based on many test specimens. It is not the purpose of this part of ISO 6603 to give an interpretation of the mechanism occurring on every particular point of the force-deflection diagram. These interpretations are a task for scientific research. NOTE See also clause 1 of ISO 6603-1:2000. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 6603. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 6603 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 2602:1980, Statistical interpretation of test results Estimation of the mean Confidence interval. ISO 6603-1:2000, Plastics Determination of puncture impact behaviour of rigid plastics Part 1: Non- instrumented impact testing. 3 Terms and definitions For the purposes of this part of ISO 6603, the following terms and definitions apply. 3.1 impact velocity v0 velocity of the striker relative to the support at the moment of impact NOTE Impact velocity is expressed in metres per second (m/s). EN ISO 66032:2000 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:35:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 3.2 force F force exerted by the striker on the test specimen in the direction of impact NOTE Force is expressed in newtons (N). 3.3 deflection l relative displacement between the striker and the specimen support, starting from the first contact between the striker and the test specimen NOTE Deflection is expressed in millimetres (mm). 3.4 energy E energy expended in deforming and penetrating the test specimen up to a deflection l NOTE 1 Energy is expressed in joules (J). NOTE 2 Energy is measured as the integral of the force-deflection curve starting from the point of impact up to a deflection l. 3.5 maximum force FM maximum force occurring during the test See Figures 1 to 4. NOTE Maximum force is expressed in newtons (N). 3.6 deflection at maximum force lM deflection that occurs at maximum force FM See Figures 1 to 4. NOTE Deflection at maximum force is expressed in millimetres (mm). 3.7 energy to maximum force EM energy expended up to the deflection lMat maximum force See Figures 1 to 4. NOTE Energy to maximum force is expressed in joules (J). 3.8 puncture deflection lP deflection at which the force has dropped to half the maximum force FM See Figures 1 to 4 and note to 3.9. NOTE Puncture deflection is expressed in millimetres (mm). EN ISO 66032:2000 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:35:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3 3.9 puncture energy EP energy expended up to the puncture deflection lP See Figures 1 to 4 and note 2. NOTE 1 Puncture energy is expressed in joules (J). NOTE 2 When testing tough materials, a transducer mounted at some distance from the impacting tip may record frictional force acting between the cylindrical part of the striker and the punctured material. The corresponding frictional energy shall not be included in the puncture energy, which, therefore, is restricted to that deflection, at which the force drops to half the maximum force FM. 3.10 impact failure mechanical behaviour of the material under test which may be either one of the following types (see note): a) YD yielding (zero slope at maximum force) followed by deep drawing b) YS yielding (zero slope at maximum force) followed by (at least partially) stable cracking c) YU yielding (zero slope at maximum force) followed by unstable cracking d) NY no yielding See Figures 1 to 4. NOTE Comparison of Figures 2 and 3 shows puncture deflection lPand puncture energy EPare identical for the failure types YS and YU. As shown in Figure 4, identical values at maximum and at puncture are found for the deflection as well as the energy in the case of failure type YU. For complex behaviour see annex A. Figure 1 Example of force-deflection diagram for failure by yielding (zero slope at maximum force) followed by deep drawing, and typical appearance of specimens after testing (with lubrication) EN ISO 66032:2000 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:35:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 Figure 2 Example of force-deflection diagram for failure by yielding (zero slope at maximum force) followed by stable crack growth, and typical appearance of specimens after testing (with lubrication) NOTE Natural vibration of the force detector can be seen after unstable cracking (striker and load cell). Figure 3 Example of force-deflection diagram for failure by yielding (zero slope at maximum force) followed by unstable crack growth, and typical appearance of specimens after testing (with lubrication) EN ISO 66032:2000 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:35:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 5 Figure 4 Example of force-deflection diagram for failure without yieldin