ISO-23279-2007.pdf
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1、 Reference number ISO 23279:2007(E) ISO 2007 INTERNATIONAL STANDARD ISO 23279 First edition 2007-03-15 Non-destructive testing of welds Ultrasonic testing Characterization of indications in welds Contrle non destructif des assemblages souds Contrle par ultrasons Caractrisation des indications dans l
2、es assemblages souds Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/08/2007 08:01:53 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 23279:2007(E) PD
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6、 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 mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the count
7、ry 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 Published in Switzerland ii ISO 2007 All rights reserved Copyright International Organization for Standardization Provided by IHS under lic
8、ense with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/08/2007 08:01:53 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 23279:2007(E) ISO 2007 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative referen
9、ces. 1 3 Criteria . 1 3.1 General. 1 3.2 Conventions used. 2 3.3 Location of indications. 2 3.4 Echo height criteria (Stages 1 and 2) 2 3.5 Directional reflectivity criteria (Stage 3). 3 3.6 Echostatic pattern criteria (Stage 4). 4 3.7 Echodynamic pattern criteria (Stage 5) 4 3.8 Complementary exami
10、nation. 4 Annex A (normative) Classification of internal indications in welds Flowchart procedure 5 Annex B (informative) Examination incidence 9 Annex C (informative) Basic echodynamic patterns of reflectors 10 Copyright International Organization for Standardization Provided by IHS under license w
11、ith ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/08/2007 08:01:53 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 23279:2007(E) iv ISO 2007 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwid
12、e 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
13、 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 ac
14、cordance 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 Standard req
15、uires 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. ISO 23279 was prepared by Techni
16、cal Committee ISO/TC 44, Welding and allied processes, Subcommittee SC 5, Testing and inspection of welds. Requests for official interpretations of any aspect of this International Standard should be directed to the Secretariat of ISO/TC 44/SC 5 via your national standards body. A complete listing o
17、f these bodies can be found at www.iso.org. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/08/2007 08:01:53 MDTNo reproduction or networking permitted without license from IHS -,-
18、,- ISO 23279:2007(E) ISO 2007 All rights reserved v Introduction Classification of indications as planar or non-planar is based on several parameters: welding techniques; geometrical position of the indication; maximum echo height; directional reflectivity; echostatic pattern (i.e. A-scan); echodyna
19、mic pattern. The classification process involves comparing each parameter to all the others in order to arrive at an accurate conclusion. The flowchart in Annex A gives the classification of internal weld indications suitable for general applications. Copyright International Organization for Standar
20、dization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/08/2007 08:01:53 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license wi
21、th ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/08/2007 08:01:53 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 23279:2007(E) ISO 2007 All rights reserved 1 Non-destructive testing of welds Ultrasonic testing Charac
22、terization of indications in welds 1 Scope This International Standard defines a procedure for classifying internal indications as planar or non-planar. This procedure is only suitable for indications located at least 5 mm below the unground surface of the joint. Annex A defines the procedure in the
23、 form of a flowchart. Figure 1 illustrates the location of indications. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced
24、 document (including any amendments) applies. EN 1712, Non-destructive examination of welds Ultrasonic examination of welded joints Acceptance levels 3 Criteria 3.1 General The classification is carried out by the successive application of several discriminatory criteria, i.e. echo amplitude; direct
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