《ISO-294-5-2001.pdf》由会员分享，可在线阅读，更多相关《ISO-294-5-2001.pdf（21页珍藏版）》请在三一文库上搜索。
1、INTERNATIONAL STANDARD IS0 294-5 First edition 200 1 - 1 2-0 1 AMENDMENT 1 2004-05-01 Plastics - Injection moulding of test specimens of thermoplastic materials - Part 5: Preparation of standard specimens for investigating anisotropy AMENDMENT 1 Plastiques - Moulage par injection des prouvettes de m
2、atriaux thermoplastiques - Partie 5: Prparation dprouvettes normalises pour dterminer Ianisotropie AMENDEMENT 1 Reference number IS0 294-52001 /Amd. 1 :2004(E) IS0 2004 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1
3、/9972545001 Not for Resale, 04/19/2007 06:09:30 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 294-5:2001/Amd.l:2004(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall
4、 not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The IS0 Central Secretariat accepts no liability in this area. A
5、dobe is a trademark of Adobe Systems Incorporated. Details of the sofiware products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IS
6、0 member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. O IS02004 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electroni
7、c or mechanical, including photocopying and microfilm, without permission in writing from either IS0 at the address below or ISOs member body in the country of the requester. IS0 copyright office Case postale 56 CH-I211 Geneva 20 Tel. + 41 22 749 O 1 11 Fax +41 227490947 E-mail copyrightiso.org Web
8、www.iso.org Published in Switzerland ii O IS0 2004 -All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 06:09:30 MDTNo reproduction or networking permitted withou
9、t license from IHS -,-,- IS0 294-5:2001/Amd.l:2004(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees.
10、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 SO, also take part in the work. IS0 collaborates closely with the Internati
11、onal 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 2. The main task of technical committees is to prepare International Standards. Draft International Standa
12、rds 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 document may be the subject
13、 of patent rights. IS0 shall not be held responsible for identifying any or all such patent rights. Amendment 1 to IS0 294-5:2001 was prepared by Technical Committee ISOTC 61, Plastics, Subcommittee SC 9, Thermoplastic materials. O IS0 2004 -All rights reserved iii Copyright International Organizati
14、on for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 06:09:30 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under li
15、cense with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 06:09:30 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 294-5:2001/Amd.l:2004(E) Plastics - Injection moulding of test specimens of thermoplastic materials - Part 5: Preparation of
16、 standard specimens for investigating anisotropy AMENDMENT 1 Page 1, Clause 1 Add the following highlighted text to the first paragraph: “This part of IS0 294 specifies a two-cavity mould (designated the type F IS0 mould) for the injection Pkisfk pad. Suitable test specimens IS0 527-2 type 1 B tensi
17、le test specimens or type 1 (80 mm x 10 mm) bars are then machined or die-cut from the plates (see Annex A) and used to obtain information on the anisotropy of thermoplastic parts.” Page 3, Figure 2 Replace table footnote “ b by the following (change highlighted): . . . . . . . . . . . . . . . . . .
18、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . “b 3 mm is the preferred thickness II O IS0 2004 -All rights reserved 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Stand
19、ards 1/9972545001 Not for Resale, 04/19/2007 06:09:30 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 294-5:2001/Amd.l:2004(E) ICs 83.080.20 Price based on 1 page O IS0 2004 -All rights reserved Copyright International Organization for Standardization Provided by IHS un
20、der license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 06:09:30 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD IS0 294-52001 TECHNICAL CORRIGENDUM 1 Published 2003-03-1 5 INTERNATIONAL ORGANIZATION FOR STANDARD
21、IZATION M W A P O f l H A R OPTAHHIHR no CTAHflAPTHIAUHH ORGANISATION INTERNATIONALE DE NORMALISATION Plastics - Injection moulding of test specimens of thermoplastic materials - Part 5: Preparation of standard specimens for investigating anisotropy TECHNICAL CORRIGENDUM 1 Plastiques - Moulage par i
22、njection des prouvettes de matriaux thermoplastiques - Partie 5: Prparation dprouvettes normalises pour dterminer Ianisotropie RECTIFICATIF TECHNIQUE I Technical Corrigendum 1 to IS0 294-5:2001 was prepared by Technical Committee ISOTC 61, Plastics, Subcommittee SC 9, Thermoplastic materials. Page 3
23、, Figure 2 Add the following note: NOTE 3 To obtain correct test specimens, it is essential that the dimensions of the moulded plate are as follows: length 85 mm; width 78 mm. ICs 83.080.20 Ref. No. IS0 294-5:2001/Cor.l:2003(E) O IS0 2003 -All rights reserved Published in Switzerland Copyright Inter
24、national Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 06:09:30 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD IS0 294-5 First edition 2001-12-01 Plas
25、tics - Injection moulding of test specimens of thermoplastic materials - Part 5: Preparation of standard specimens for investigating anisotropy Plastiques - Moulage par injection des prouvettes de matriaux thermoplastiques - Partie 5: Prparation dprouvettes normalises pour dterminer Ianisotropie Ref
26、erence number IS0 294-5:2001 (E) IS0 2001 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 06:09:30 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 2
27、94-5:2001(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloadin
28、g this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The IS0 Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the Gener
29、al Info relative to the file; the PDFcreation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IS0 member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given b
30、elow. o IS02001 All rights reserved. Unless othetwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IS0 at the address below or ISOs member bo
31、dy in the country of the requester. IS0 copyright office Case postale 56 CH-1 21 1 Geneva 20 Tel. + 41 22 749 O 1 11 Fax +41 227490947 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii 0 IS0 2001 -All rights reserved Copyright International Organization for Standardization Provided by
32、IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 06:09:30 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 294-52001 (E) Contents Page Foreword . iv Introduction . v 1 Scope 1 2 Normative references 1 3 Terms and defini
33、tions . 1 4 Apparatus . 2 5 Procedure . 4 6 Report on test-specimen preparation 5 Annex A (normative) Preparation of test specimens 6 O IS0 2001 -All rights reserved iii Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards
34、1/9972545001 Not for Resale, 04/19/2007 06:09:30 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 294-5:2001(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of prepa
35、ring International Standards is normally carried out through IS0 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 l
36、iaison with SO, also take part in the work. IS0 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 Internatio
37、nal 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 IS0 294 m
38、ay be the subject of patent rights. IS0 shall not be held responsible for identifying any or all such patent rights. International Standard IS0 294-5 was prepared by Technical Committee ISOTC 61, Plastics, Subcommittee SC 9, Thermoplastic materials. IS0 294 consists of the following parts, under the
39、 general title Plastics - injection moulding of test specimens of thermoplastic materials: - Part 1: General principles, and moulding of multipurpose and bar test specimens - Part 2: Small tensile bars - Part 3: Small plates - Part 4: Determination of moulding shrinkage - Part 5: Preparation of stan
40、dard specimens for investigating anisotropy Annex A forms a normative part of this part of IS0 294. iv O IS0 2001 -All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/
41、2007 06:09:30 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 294-52001 (E) Introduction Reinforced and self-reinforcing injection-mouldable thermoplastics are used in a wide variety of applications, some of which may be safety-related. During the injection-moulding pro
42、cess, reinforcement fibres may preferentially align with the flow of the molten material and not across the flow direction. This preferential alignment causes an imbalance in the properties of the moulded thermoplastic so that, in the flow direction, the alignment of the reinforcing fibres causes a
43、higher strength and stiffness than in the cross direction with no aligned fibres. This difference in properties is termed anisotropy, and it may result in an injection-moulded component having less than the desired or designed strength. To aid designers in understanding the potential strength of an
44、injection-moulded component, it is desirable to know about the anisotropy of an injection-moulded component. During the development of this part of IS0 294, it was found that injection-moulded test specimens do not exhibit the same fibre alignment across their thickness, but that the outer layers ha
45、ve fibres preferentially aligned in the mould filling direction while the core has randomly oriented fibres (.e. no preferential alignment). The ratio of the cross-sectional area of aligned-fibre orientation (.e. “skin” layer thickness) to that of random-fibre orientation (.e. “core” thickness) is a
46、ffected by the specimen thickness and the mould filling rate, .e. the average injection velocity. Thicker specimens exhibit a lower proportion of aligned fibres than do thinner specimens. Slower mould fill speeds lead to thicker “skin” layers with aligned fibres. As a result, to obtain meaningful da
47、ta on a particular design of moulding, an investigator should prepare specimens with a thickness as close to the moulding wall thickness as possible, and specimens should be prepared using several mould fill speeds (.e. several average injection velocities) so that the anisotropy in the moulding can
48、 be closely estimated. Since the specimen thickness and injection velocity have a significant influence on the final anisotropy, this part of IS0 294 should only be used for determining information that is useful in designing mouldings, and not as a quality control test for the plastic material itself. O IS0 2001 -All rights reserved V Copyright International Organiz