ISO-22214-2006.pdf
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1、 Reference number ISO 22214:2006(E) ISO 2006 INTERNATIONAL STANDARD ISO 22214 First edition 2006-02-01 Fine ceramics (advanced ceramics, advanced technical ceramics) Test method for cyclic bending fatigue of monolithic ceramics at room temperature Cramiques techniques Mthode dessai pour la fatigue d
2、e courbure cyclique de cramiques monolithiques temprature ambiante Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 10:44:57 MDTNo reproduction or networking permitted without lic
3、ense from IHS -,-,- ISO 22214:2006(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 t
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6、iat at the address given below. ISO 2006 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 addres
7、s 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 Published in Switzerland ii ISO 2006 All rights reserved Copyright International Organization for S
8、tandardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 10:44:57 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 22214:2006(E) ISO 2006 All rights reserved iii Contents Page Foreword iv 1 Scope . 1
9、2 Normative references. 1 3 Terms and definitions. 1 4 Test specimens. 4 5 Testing machine 4 6 Testing method. 6 7 Treatment of test result 7 8 Test report . 8 Bibliography. 9 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Stan
10、dards 1/9972545001 Not for Resale, 04/21/2007 10:44:57 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 22214:2006(E) iv ISO 2006 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
11、(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, g
12、overnmental 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/I
13、EC 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 requires approval by at least 75 % of the mem
14、ber 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 22214 was prepared by Technical Committee ISO/TC 206, Fine ceramics. C
15、opyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 10:44:57 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 22214:2006(E) ISO 200
16、6 All rights reserved 1 Fine ceramics (advanced ceramics, advanced technical ceramics) Test method for cyclic bending fatigue of monolithic ceramics at room temperature 1 Scope This International Standard specifies a test method for four-point cyclic bending fatigue of fine ceramics that are carried
17、 out in the air at room temperature. This test may be used as a pass/fail test for material qualification purposes, or for determination of the overall fatigue behaviour at several different stress levels. 2 Normative references The following referenced documents are indispensable for the applicatio
18、n of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 31-0:1992, Quantities and units Part 0: General principles ISO 14704:2000, Fine ceramics (advanced ceramics, advance
19、d technical ceramics) Test method for flexural strength of monolithic ceramics at room temperature ISO/IEC 17025:2005, General requirements for the competence of testing and calibration laboratories 3 Terms and definitions For the purposes of this document, the following terms and definitions apply.
20、 3.1 fatigue test test where repeated stress is applied to a test specimen, and the number of cycles to fracture is measured 3.2 fatigue failure fracture due to cyclic loading well below the strength under monotonic loading 3.3 suspending time time at which test is intentionally interrupted without
21、fracture 3.4 four-point bending stress maximum value of stress generated in a test specimen when a test specimen is loaded equally by two bearings symmetrically located between two support bearings 3.5 cyclic stress stress which is simply and cyclically varied between a specific maximum value and a
22、specific minimum value See Figure 1. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/21/2007 10:44:57 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 22214:
23、2006(E) 2 ISO 2006 All rights reserved 3.6 maximum stress max algebraic maximum value of cyclic stress See Figure 1. 3.7 minimum stress min algebraic minimum value of cyclic stress See Figure 1. NOTE For maximum stress or minimum stress, the sign is considered. A tensile stress is taken as positive,
24、 and a compressive stress is taken as negative. 3.8 stress cycle one period of the cyclic stress See Figure 1. Key X Time Y Stress 1 min 2 max 3 One stress cycle Figure 1 Cyclic stress Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Techn
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