1、February 2009DEUTSCHE NORM English price group 11No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 83.140.10!$V(“1510590
2、www.din.deDDIN ISO 7765-2Plastics film and sheeting Determination of impact resistance by the free-falling dart method Part 2: Instrumented puncture test (ISO 7765-2:1994)English version of DIN ISO 7765-2:2009-02Kunststofffolien und -bahnen Bestimmung der Schlagfestigkeit nach dem Fallhammerverfahre
3、n Teil 2: Durchstoversuch mit elektronischer Messwerterfassung (ISO 7765-2:1994)Englische Fassung DIN ISO 7765-2:2009-02SupersedesDIN ISO 7765-2:2008-02www.beuth.deDocument comprises 14 pagesDIN ISO 7765-2:2009-02 2 Contents Page National foreword 3 1 Scope 5 2 Normative references 5 3 Definitions 6
4、 4 Principle . 6 5 Apparatus . 6 5.1 Test device . 6 5.1.1 Energy carrier 9 5.1.2 Striker . 10 5.1.3 Clamping device 10 5.2 Instruments for measuring force, specimen deformation and specimen thickness . 10 5.2.1 Load cell . 10 5.2.2 Device for measuring the specimen deformation 10 5.2.3 Thickness ga
5、uge . 10 6 Test specimens 10 6.1 Sampling and preparation of test specimens 10 6.2 Number of test specimens . 11 6.3 Conditioning of test specimens . 11 7 Procedure . 11 7.1 Test atmosphere 11 7.2 Measuring the thickness 11 7.3 Clamping the test specimen . 11 7.4 Impact-penetration test . 11 8 Expre
6、ssion of results 11 9 Precision 12 10 Test report 12 Annex A (informative) General remarks 13 Annex B (informative) Bibliography 14 DIN ISO 7765-2:2009-02 3 National foreword This standard has been prepared by Technical Committee ISO/TC 61 “Plastics”. The responsible German body involved in its prep
7、aration was the Normenausschuss Kunststoffe (FNK) (Plastics Standards Committee), Technical Committee NA 054-04-04 AA Kunststoff-Folien und kunststoffbeschichtete Flchen-gebilde (Kunstleder); allgemeine Eigenschaften. The above-mentioned International Standard has been adopted without any changes to
8、 its content but with minor formal modifications. This document contains phrasings and formats that are appropriate to the structure and character of an International Standard but which, in terms of detail, do not necessarily meet the current rules of presentation for German Standards. Wherever poss
9、ible, German technical terms were used in the German translation. The national standard DIN 53373 will be withdrawn upon the publication of DIN ISO 7765-2. ISO 7765 consists of the following parts, under the general title Plastics film and sheeting Determination of impact resistance by the free-fall
10、ing dart method: Part 1: Staircase methods Part 2: Instrumented puncture test The ISO Standards cited in clause 2 were valid as of the publication of the original ISO Standard (1994). Since then, ISO 291:1977 has been withdrawn and replaced by ISO 291:2005 (identical with DIN EN ISO 291:2006) and IS
11、O 6603-2:1989 has been withdrawn and replaced by ISO 6603-2:2000 (identical with DIN EN ISO 6603-2:2002). The DIN Standards corresponding to the International Standards referred to in the ISO Standard are as follows: ISO 291 DIN EN ISO 291 ISO 4593 DIN 53370 ISO 6603-2 DIN EN ISO 6603-2 ISO 7765-1 D
12、IN EN ISO 7765-1 Amendments This standard differs from DIN 53373:1970-09 as follows: a) DIN ISO 7765-2 makes a clear distinction between the peak force and the failure force, and the related deformation and energy. DIN 53373 only made a reference to this difference in a note to subclause 7.2. b) DIN
13、 ISO 7765-2 allows for the lubrication of the striker as an alternative. Although this can reduce the statistical scatter of the results, it can also affect the measurement results. c) DIN ISO 7765-2 allows for a striking surface of 10 mm diameter as an alternative, but does not allow for a pyramid-
14、shaped striker as does DIN 53373. d) The standard has been brought up-to-date with the current rules of presentation. Compared with DIN ISO 7765-2:2008-02, the following correction has been made to the German version only and therefore does not affect the English text: e) In subclause 7.3, the maxim
15、um elongation (pre-stretch) has been corrected to read 0,01 % (instead of 0,1 %). DIN ISO 7765-2:2009-02 4 Previous editions DIN 53373: 1970-09 DIN ISO 7765-2: 2008-02 National Annex NA (informative) Bibliography DIN 53370, Testing of plastics films Determination of the thickness by mechanical scann
16、ing DIN EN ISO 291, Plastics Standard atmospheres for conditioning and testing DIN EN ISO 6603-2, Plastics Determination of puncture impact behaviour of rigid plastics Part 2: Instrumented puncture test DIN EN ISO 7765-1, Plastics film and sheeting Determination of impact resistance by the free-fall
17、ing dart method Part 1: Staircase methods DIN ISO 7765-2:2009-025Plastics film and sheeting -Determination of impact resistance by the free-falling dart method -Part 2: Instrumented puncture testDIN ISO 7765-2:2009-026DIN ISO 7765-2:2009-027DIN ISO 7765-2:2009-028DIN ISO 7765-2:2009-029DIN ISO 7765-2:2009-0210DIN ISO 7765-2:2009-0211DIN ISO 7765-2:2009-0212DIN ISO 7765-2:2009-0213DIN ISO 7765-2:2009-0214
