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1、a Date: 29 November 2007 Origin: International Latest date for receipt of comments: 29 February 2008 Project no.: 2007/03171 Responsible committee: PRI/21 Testing of plastics Interested committees: Title: Draft BS EN ISO 179-2 AMD1 Plastics Determination of Charpy impact properties Part 2: Instrumen
2、ted impact test Supersession information: If this document is published as a standard, the UK implementation of it will supersede NONE and partially supersede. NONE If you are aware of a current national standard which may be affected, please notify the secretary (contact details below). WARNING: TH
3、IS IS A DRAFT AND MUST NOT BE REGARDED OR USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 29 February 2008. This draft is issued to allow comments from interested parties; all comments will be given consideration prior to publication. No acknowledgement will normally be sent. See overle
4、af for information on commenting. No copying is allowed, in any form, without prior written permission from BSI except as permitted under the Copyright, Designs and Patent Act 1988 or for circulation within a nominating organization for briefing purposes. Electronic circulation is limited to dissemi
5、nation by e-mail within such an organization by committee members. Further copies of this draft may be purchased from BSI Customer Services, Tel: +44(0) 20 8996 9001 or email ordersbsi-. British, International and foreign standards are also available from BSI Customer Services. Information on the co
6、-operating organizations represented on the committees referenced above may be obtained from the responsible committee secretary. Cross-references The British Standards which implement International or European publications referred to in this draft may be found via the British Standards Online Serv
7、ice on the BSI web site http:/www.bsi-. Direct tel: 020 8996 7261 Responsible Committee Secretary: Mr A Price (BSI) E-mail: alex.pricebsi- Draft for Public Comment Head Office 389 Chiswick High Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 Version 7.0 DPC: 07/30174
8、445 DC Licensed Copy: London South Bank University, London South Bank University, Thu Dec 20 03:27:48 GMT+00:00 2007, Uncontrolled Copy, (c) BSI b Introduction This draft standard is based on international discussions in which the UK has taken an active part. Your comments on this draft are invited
9、and will assist in the preparation of the consequent standard. Comments submitted will be reviewed by the relevant BSI committee before sending the consensus UK vote and comments to the international secretariat, which will then decide appropriate action on the draft and the comments received. If no
10、 comments are received to the contrary, then the UK will approve this draft. If the international standard is approved, it is possible the text will be published as an identical British Standard. UK Vote Please indicate whether you consider the UK should submit a negative (with reasons) or positive
11、vote on this draft. Submission The guidance given below is intended to ensure that all comments receive efficient and appropriate attention by the responsible BSI committee. Annotated drafts are not acceptable and will be rejected. All comments must be submitted, preferably electronically, to the Re
12、sponsible Committee Secretary at the address given on the front cover. Comments should be compatible with Version 6.0 or Version 97 of Microsoft Word for Windows, if possible; otherwise comments in ASCII text format are acceptable. Any comments not submitted electronically should still adhere to the
13、se format requirements. All comments submitted should be presented as given in the example below. Further information on submitting comments and how to obtain a blank electronic version of a comment form are available from the BSI web site at: http:/www.bsi- Template for comments and secretariat obs
14、ervations Date: xx/xx/200x Document: ISO/DIS xxxxx 1 2 (3) 4 5 (6) (7) MB Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/ Note (e.g. Table 1) Type of com- ment Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitt
15、ed 3.1 Definition 1 ed Definition is ambiguous and needs clarifying. Amend to read . so that the mains connector to which no connection . 6.4 Paragraph 2 te The use of the UV photometer as an alternative cannot be supported as serious problems have been encountered in its use in the UK. Delete refer
16、ence to UV photometer. Microsoft and MS-DOS are registered trademarks, and Windows is a trademark of Microsoft Corporation. Licensed Copy: London South Bank University, London South Bank University, Thu Dec 20 03:27:48 GMT+00:00 2007, Uncontrolled Copy, (c) BSI THIS DOCUMENT IS A DRAFT CIRCULATED FO
17、R COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH. IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT INTERNATIONAL STANDARDS MAY ON OCCASION HA
18、VE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS. RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTAT
19、ION. DRAFT AMENDMENT ISO 179-2:1997/DAmd 1 International Organization for Standardization, 2007 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION ISO/TC 61/SC 2 Voting begins on: 2007-10-05 Secretariat: AENOR Voting terminates on: 2008-03-05 Plastics Determi
20、nation of Charpy impact properties Part 2: Instrumented impact test AMENDMENT 1 Plastiques Dtermination des caractristiques au choc Charpy Partie 2: Essai de choc instrument AMENDEMENT 1 ICS 83.080.01 In accordance with the provisions of Council Resolution 15/1993 this document is circulated in the
21、English language only. Conformment aux dispositions de la Rsolution du Conseil 15/1993, ce document est distribu en version anglaise seulement. To expedite distribution, this document is circulated as received from the committee secretariat. ISO Central Secretariat work of editing and text compositi
22、on will be undertaken at publication stage. Pour acclrer la distribution, le prsent document est distribu tel quil est parvenu du secrtariat du comit. Le travail de rdaction et de composition de texte sera effectu au Secrtariat central de lISO au stade de publication. Licensed Copy: London South Ban
23、k University, London South Bank University, Thu Dec 20 03:27:48 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ISO 179-2:1997/DAmd 1 ii ISO 2007 All rights reserved PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed
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26、 use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. Copyright notice This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as permitted under the applicable
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28、 should be addressed to either ISO at the address below or ISOs 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 copyrightiso.org Web www.iso.org Reproduction may be subject to royalty payments or
29、a licensing agreement. Violators may be prosecuted. Licensed Copy: London South Bank University, London South Bank University, Thu Dec 20 03:27:48 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ISO 179-2:1997/DAM 1 ISO 2007 All rights reserved iii Contents Page Foreword iv Annex C (informative) Precisio
30、n Statement .1 C.1 Precision Statement 1 Licensed Copy: London South Bank University, London South Bank University, Thu Dec 20 03:27:48 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ISO 179-2:1997/DAM 1 iv ISO 2007 All rights reserved Foreword ISO (the International Organization for Standardization) is
31、 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 represen
32、ted 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 dr
33、afted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International S
34、tandard 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 document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Amendment 1 to ISO 17
35、9-2:1997 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 2, mechanical properties. Licensed Copy: London South Bank University, London South Bank University, Thu Dec 20 03:27:48 GMT+00:00 2007, Uncontrolled Copy, (c) BSI DRAFT AMENDMENT ISO 179-2:1997/DAM 1 ISO 2007 All righ
36、ts reserved 1 Plastics Determination of Charpy impact properties Part 2: Instrumented impact test AMENDMENT 1 Page 16, Annex B Add after the existing text and before Annex C “Bibliography“ Annex C (informative) Precision Statement C.1 Precision Statement C.1.1 Tables C.1 and C.2 are based on a round
37、 robin test involving four (4) laboratories and one material. All of the test samples were sampled and distributed by one source. Each “test result” was the average of ten (10) individual determinations. Each laboratory obtained and reported ten (10) test results for each material. C.1.2 Tables C.3
38、and C.4 are based on a round robin test involving three (3) laboratories and one material. All of the test samples were sampled and distributed by one source. Each “test result” was the average of ten (10) individual determinations. Each laboratory obtained and reported ten (10) test results for eac
39、h material. NOTE Caution Due to the limited number of laboratories and materials, the following explanations of r and R (see C.1.3 trough C.1.3.3) are only intended to present a meaningful way of considering the approximate precision of this test method. The data in Tables C.1 and C.2 should not be
40、rigorously applied to acceptance or rejection of material, as those data are specific to the round robin and may not be representative of other lots, conditions, materials, or laboratories. C.1.3 Concept of “r” and “R” in Tables C.1 and C.2 - If Sr and SR have been calculated from a large enough bod
41、y of data, and for test results that were averages from testing 10 specimens for each test result, Then: C.1.3.1 Repeatability Two test results obtained within one laboratory shall be judged not equivalent if they differ by more than the r value for that material. r is the interval representing the
42、critical difference between two test results for the same material, obtained by the same operator using the same equipment in the same laboratory. C.1.3.2 Reproducibility Two test results obtained by different laboratories shall be judged not equivalent if they differ by more than the R value for th
43、at material. R is the interval representing the critical difference between two test results for the same material, obtained by different operators using different equipment in different laboratories. C.1.3.3 The judgments in C.1.3.1 and C.1.3.2 will have an approximately 95% (0.95) probability of b
44、eing correct. Licensed Copy: London South Bank University, London South Bank University, Thu Dec 20 03:27:48 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ISO 179-2:1997/DAM 1 2 ISO 2007 All rights reserved Table C.1 Precision, Notched Impact Strength (kJ/m) Material Average Sr SR r R PS-HI 13.03 0.099
45、 1.56 0.28 4.36 Sr = within laboratory standard deviation SR = between laboratory standard deviation r 95% repeatability limit = 2.8 Sr R 95% reproducibility limit = 2.8 SR Table C.2 Precision, Energy Break (J) Material Average Sr SR r R PS-HI 0.40 0.004 0.04 0.01 0.11 Sr = within laboratory standar
46、d deviation SR = between laboratory standard deviation r 95% repeatability limit = 2.8 Sr R 95% reproducibility limit = 2.8 SR Table C.3 Precision, Peak Force (N) Material Average Sr SR r R PS-HI 193.7 3.62 9.72 10.14 27.23 Sr = within laboratory standard deviation SR = between laboratory standard d
47、eviation r 95% repeatability limit = 2.8 Sr R 95% reproducibility limit = 2.8 SR Table C.4 Precision, Deformation Peak Force (mm) Material Average Sr SR r R PS-HI 1.89 0.049 0.06 0.14 0.17 Sr = within laboratory standard deviation SR = between laboratory standard deviation r 95% repeatability limit = 2.8 Sr R 95% reproducibility limit = 2.8 SR Licensed Copy: London South Bank University, London South Bank University, Thu Dec 20 03:27:48 GMT+00:00 2007, Uncontrolled Copy, (c) BSI