1、November 2016 English price group 12No part of this translation 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 81.060.30!%u“2588292www.din.deD
2、IN EN ISO 17142Fine ceramics (advanced ceramics, advanced technical ceramics) Mechanical properties of ceramic composites at high temperature in air at atmospheric pressure Determination of fatigue properties at constant amplitude (ISO 17142:2014);English version EN ISO 17142:2016,English translatio
3、n of DIN EN ISO 17142:2016-11Hochleistungskeramik Mechanische Eigenschaften von keramischen Verbundwerkstoffen bei hoher Temperatur in Luft unter Atmosphrendruck Bestimmung der Ermdungseigenschaften bei konstanter Amplitude (ISO 17142:2014);Englische Fassung EN ISO 17142:2016,Englische bersetzung vo
4、n DIN EN ISO 17142:2016-11Cramiques techniques Proprits mcaniques des cramiques composites haute temprature sous air pression atmosphrique Dtermination des proprits de fatigue amplitude constante (ISO 17142:2014);Version anglaise EN ISO 17142:2016,Traduction anglaise de DIN EN ISO 17142:2016-11Super
5、sedesDIN EN 15157:200610www.beuth.deDocument comprises ts pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.12.16DIN EN ISO 17142:2016-11 2 A comma is used as the decimal marker. National foreword The text of ISO 17142:2014 has b
6、een prepared by Technical Committee ISO/TC 206 “Fine ceramics” and has been taken over as EN ISO 17142:2016 by Technical Committee CEN/TC 184 “Advanced technical ceramics” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-Normenausschuss Materialprfung (DIN
7、 Standards Committee Materials Testing), Working Committee NA 062-02-94 AA Prfung von Hochleistungskeramik Keramische Verbundwerkstoffe. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 3611 DIN EN ISO 3611 ISO 7500-1 DIN EN ISO 7500-1 I
8、SO 9513 DIN EN ISO 9513 ISO 14574 DIN EN ISO 14574 IEC 60584-1 DIN EN 60584-1 IEC 60584-2 DIN IEC 60584-2 Amendments This standard differs from DIN EN 15157:2006-10 as follows: a) in Clause 7 “Test specimens”, a recommendation for the shape of specimens made of 1D composites has been included; b) th
9、e former Note to Subclause 6.4 “Extensometer” and the Note to Subclause 9.3.2 “Setting the extensometer” have been incorporated as normative text; c) ISO 17142:2014 has been adopted. Previous editions DIN EN 15157: 2006-10 National Annex NA (informative) Bibliography DIN EN ISO 3611, Geometrical Pro
10、duct Specifications (GPS) Dimensional measuring equipment: Micrometers for external measurements Design and metrological characteristics DIN EN ISO 7500-1, Metallic materials Calibration and verification of static uniaxial testing machines Part 1: Tension/compression testing machines Calibration and
11、 verification of the force-measuring system DIN EN ISO 9513, Metallic materials Calibration of extensometer systems used in uniaxial testing DIN EN ISO 14574, Fine ceramics (advanced ceramics, advanced technical ceramics) Mechanical properties of ceramic composites at high temperature Determination
12、of tensile properties DIN EN 60584-1, Thermocouples Part 1: EMF specifications and tolerances DIN IEC 60584-2, Thermocouples Tolerances EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17142 April 2016 ICS 81.060.30 Supersedes EN 15157:2006English Version Fine ceramics (advanced ceramics, ad
13、vanced technical ceramics) Mechanical properties of ceramic composites at high temperature in air at atmospheric pressure Determination of fatigue properties at constant amplitude (ISO 17142:2014) Cramiques techniques Proprits mcaniques des cramiques composites haute temprature sous air pression atm
14、osphrique Dtermination des proprits de fatigue amplitude constante (ISO 17142:2014) Hochleistungkerami Mechanische Eigenschaften von keramischen Verbundwerkstoffen bei hoher Temperatur in Luft unter Atmosphrendruck Bestimmung der Ermdungseigenschaften bei konstanter Amplitude (ISO 17142:2014) This E
15、uropean Standard was approved by CEN on 25 March 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
16、concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN membe
17、r into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, Fran
18、ce, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOM
19、ITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17142:2016 EEN ISO 17142:2016 (E) 2 Contents Page European foreword . 3 Foreword 4 1 Scope 5
20、2 Normative references 5 3 Terms and definitions . 6 3.1 General 6 3.2 Cyclic fatigue phenomena 7 4 Principle . 9 5 Significance and use . 9 6 Apparatus 10 6.1 Fatigue test machine . 10 6.2 Load train 10 6.3 Set-up for heating . 11 6.4 Extensometer . 11 6.5 Temperature measurement . 11 6.6 Data reco
21、rding system . 11 6.7 Micrometers . 11 7 Test specimens 11 8 Test specimen preparation 12 8.1 Machining and preparation 12 8.2 Number of test specimens . 13 9 Test procedure 13 9.1 Test set-up: temperature considerations 13 9.2 Measurement of test specimen dimensions . 13 9.3 Testing technique . 14
22、9.4 Test validity 15 10 Calculation of results 15 10.1 Time to failure, tf15 10.2 Damage parameters 15 10.3 Residual properties . 16 11 Test report 17 Annex A (informative) Schematic evolution of E . 19 DIN EN ISO 17142:2016-11 EN ISO 17142:2016 (E) 3 European foreword The text of ISO 17142:2014 has
23、 been prepared by Technical Committee ISO/TC 206 “Fine ceramics” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 17142:2016 by Technical Committee CEN/TC 184 “Advanced technical ceramics” the secretariat of which is held by DIN. This European Standard sh
24、all be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2016, and conflicting national standards shall be withdrawn at the latest by October 2016. Attention is drawn to the possibility that some of the elements of this do
25、cument may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 15157:2006. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are b
26、ound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portu
27、gal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 17142:2014 has been approved by CEN as EN ISO 17142:2016 without any modification. DIN EN ISO 17142:2016-11 ForewordISO (the International Organization for Standardization)
28、 is 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 repre
29、sented 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.The procedures used to devel
30、op this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/
31、IEC Directives, Part 2 (see www.iso.org/directives). 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. Details of any patent rights identified during t
32、he development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning
33、 of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 206, Fi
34、ne ceramics.DIN EN ISO 17142:2016-11 EN ISO 17142:2016 (E) 41 ScopeThis International Standard specifies the conditions for the determination of properties at constant-amplitude of load or strain in uniaxial tension/tension or in uniaxial tension/compression cyclic fatigue of ceramic matrix composit
35、e materials (CMCs) with fibre reinforcement for temperature up to 1 700 C in air at atmospheric pressure.This International Standard applies to all ceramic matrix composites with fibre reinforcement, unidirectional (1D), bi-directional (2D), and tri-directional (xD, where 2 2) reinforcementTable 1 R
36、ecommended test specimen dimensionsDimensions in millimetres1D, 2D, and xD Tolerancel, calibrated length 30 to 80 0,5h, thickness 2 0,2b1, width in the calibrated length (x 2)8 to 20 0,2b2, width B2= b1with = 1,2 to 2 0,2r, radius (x 2) 30 2Parallelism of machined parts 0,05 8 Test specimen preparat
37、ion8.1 Machining and preparationDuring cutting out, care shall be taken to align the test specimen axis with the desired fibre related loading axis.Machining parameters which avoid damage to the material shall be established and documented. These parameters shall be adhered to during test specimen p
38、reparation.DIN EN ISO 17142:2016-11 EN ISO 17142:2016 (E) 128.2 Number of test specimensAt least three valid test results, as specified in 9.4, are required for any condition.9 Test procedure9.1 Test set-up: temperature considerations9.1.1 GeneralThe following determinations shall be carried out und
39、er conditions representative of the tests and shall be repeated every time there is a change in material, in specimen geometry, in gripping configuration, etc. In establishing them, time shall be allowed for temperature stabilization.9.1.2 Controlled temperature zonePrior to testing, the temperature
40、 gradient within the calibrated length inside the furnace shall be established over the temperature range of interest. This shall be done by measuring the specimen temperature at a minimum of three locations, which shall be the two extensometer reference points and a point midway between the two.To
41、establish the length of the controlled temperature zone, it is necessary to measure the temperature also outside the gauge length. The temperature variation within the controlled temperature zone and the gauge length shall meet the requirements of Clause 7 and 6.3 respectively.Temperatures may be me
42、asured by any means conforming to 6.5. If thermocouples are used to measure the temperature at different locations of the specimen, they shall be embedded (and sealed if necessary) into the specimen to a depth approximately equal to half the specimen dimension in the direction of insertion.9.1.3 Tem
43、perature calibrationDuring a series of tests, the test temperature can be determined either directly by measurement on the specimen itself, or indirectly from the temperature indicated by the temperature control device.In the latter case, the relationship between the control temperature and test spe
44、cimen temperature at the centre of the gauge length shall be established beforehand on a dummy test specimen over the range of temperature of interest.NOTE The relationship between the temperature indicated by the temperature control system and the test temperature is usually established simultaneou
45、sly with the controlled temperature zone.9.2 Measurement of test specimen dimensionsThe cross-section area shall be determined at the centre of the specimen and at each end of the gauge length.The cross-section area varies with temperature and the variation is very difficult to measure. For this rea
46、son, the cross-section area shall be measured at room temperature.Dimensions shall be measured to an accuracy of 0,01 mm. The arithmetic means of the measurements shall be used for calculations.DIN EN ISO 17142:2016-11 EN ISO 17142:2016 (E) 13 9.3 Testing technique9.3.1 Specimen mountingInstall the
47、test specimen in the gripping system with its longitudinal axis coinciding with that of the test machine.Care shall be taken not to induce flexural or torsional loads in the test specimen.9.3.2 Setting the extensometerIn the case where a contacting extensometer is positioned at ambient temperature,
48、the extensometer output shall be adjusted to read zero after the stabilization period at the test temperature.In the case where the material has a high thermal expansion coefficient, it is recommended to mechanically pre-set the extensometer taking expansion into account in order to be close to zero
49、 when at test temperature.9.3.3 Heating the test specimenRaise the test specimen temperature to the required test temperature and maintain this temperature for a period to allow for temperature stabilization and, if applicable, for stabilization of the extensometer readout. Two procedures are possible: if test specimen temperature is measured during the test on the specimen itself, this temperature shall be used to control the furnace. If it is not possible to measure directly th
