DIN EN ISO 14544-2016 Fine ceramics (advanced ceramics advanced technical ceramics) - Mechanical properties of ceramic composites at high temperature - Determination of compression.pdf

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1、October 2016 English price group 13No 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!%nI“2577538www.din.deD

2、IN EN ISO 14544Fine ceramics (advanced ceramics, advanced technical ceramics) Mechanical properties of ceramic composites at high temperature Determination of compression properties (ISO 14544:2013);English version EN ISO 14544:2016,English translation of DIN EN ISO 14544:2016-10Hochleistungskeramik

3、 Mechanische Eigenschaften von keramischen Verbundwerkstoffen bei hoher Temperatur Bestimmung der Eigenschaften unter Druck (ISO 14544:2013);Englische Fassung EN ISO 14544:2016,Englische bersetzung von DIN EN ISO 14544:2016-10Cramiques techniques Proprits mcaniques des cramiques composites haute tem

4、prature Dtermination des caractristiques en compression (ISO 14544:2013);Version anglaise EN ISO 14544:2016,Traduction anglaise de DIN EN ISO 14544:2016-10SupersedesDIN EN 12290:200509 andDIN EN 12291:200310www.beuth.deDocument comprises 26 pagesDTranslation by DIN-Sprachendienst.In case of doubt, t

5、he German-language original shall be considered authoritative.10.16 DIN EN ISO 14544:2016-10 2 A comma is used as the decimal marker. National foreword The text of ISO 14544:2012 has been prepared by Technical Committee ISO/TC 206 “Fine ceramics” and has been taken over as EN ISO 14544:2016 by Techn

6、ical Committee CEN/TC 184 “Advanced technical ceramics” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-Normenausschuss Materialprfung (DIN Standards Committee Materials Testing), Working Committee NA 062-02-94 AA Prfung von Hochleistungskeramik Keramisch

7、e Verbundwerkstoffe. It should be noted that EN 10002-4 has been replaced by EN ISO 9513 which is available as DIN EN ISO 9513. 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 IEC 60584-

8、1 DIN EN 60584-1 IEC 60584-2 DIN IEC 60584-2 Amendments This standard differs from DIN EN 12290:2005-09 and DIN EN 12291:2003-10 as follows: a) both standards have been combined into one standard; b) in Clause 3, the terms “apparent cross-section area” (3.5.1) and “effective cross-section area” (3.5

9、.2) have been added; c) in Subclause 5.5 “Extensometer”, a NOTE relating to electro-optical extensometers with reference marks has been included; d) in Subclause 6.1 “General”, a recommendation for a minimum test piece volume has been added; e) ISO 14544:2013 has been adopted. Previous editions DIN

10、V ENV 12290: 1996-10 DIN V ENV 12291: 1996-10 DIN EN 12290: 2005-09 DIN EN 12291: 2003-10 DIN EN ISO 14544:2016-10 3 National Annex NA (informative) Bibliography DIN EN ISO 3611, Geometrical Product Specifications (GPS) Dimensional measuring equipment: Micrometers for external measurements Design an

11、d 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 verification of the force-measuring system DIN EN 60584-1, Thermocouples Part 1: EMF specifications and t

12、olerances DIN IEC 60584-2, Thermocouples Tolerances DIN EN ISO 14544:2016-10 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 14544 April 2016 ICS 81.060.30 Supersedes EN 12290:2005, EN 12291:2003English Version Fine ceramics (advanced ceramics, advanced te

13、chnical ceramics) - Mechanical properties of ceramic composites at high temperature - Determination of compression properties (ISO 14544:2013) Cramiques techniques - Proprits mcaniques des cramiques composites haute temprature - Dtermination des caractristiques en compression (ISO 14544:2013) Hochle

14、istungskeramik - Mechanische Eigenschaften von keramischen Verbundwerkstoffen bei hoher Temperatur - Bestimmung der Eigenschaften unter Druck (ISO 14544:2013) This European Standard was approved by CEN on 18 March 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which

15、stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This Europ

16、ean Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are

17、 the national standards bodies of 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, Portugal, Rom

18、ania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by

19、 any means reserved worldwide for CEN national Members. Ref. No. EN ISO 14544:2016 EContents PageEuropean foreword .31 Scope . 52 Normative references 53 Terms and definitions . 54 Principle 75 Apparatus . 85.1 Test machine . 85.2 Load train. 85.3 Gastight test chamber . 85.4 Set-up for heating . 95

20、.5 Extensometer . 95.6 Temperature measurement . 95.7 Data recording system 95.8 Micrometers . 106 Test specimens. 106.1 General 106.2 Compression between platens . 106.3 Test specimen used with grips . 117 Test specimen preparation .147.1 Machining and preparation . 147.2 Number of test specimens 1

21、48 Test procedures 158.1 Test set-up: temperature considerations 158.2 Test set-up: other considerations 158.3 Testing technique . 168.4 Test validity . 179 Calculation of results 179.1 Test specimen origin . 179.2 Compression strength 179.3 Strain at maximum compression force . 189.4 Proportionalit

22、y ratio or pseudo-elastic modulus, elastic modulus 1810 Test report 20Annex A (normative) Buckling: How to proceed when buckling is suspected 21Bibliography .22DIN EN ISO 14544:2016-10 EN ISO 14544:2016 (E)2Foreword .4European foreword The text of ISO 14544:2013 has been prepared by Technical Commit

23、tee ISO/TC 206 “Fine ceramics” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 14544:2016 by Technical Committee CEN/TC 184 “Advanced technical ceramics” the secretariat of which is held by DIN. This European Standard shall be given the status of a natio

24、nal 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 document may be the subject of paten

25、t rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12291:2003, EN 12290:2005. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement t

26、his 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, Portugal, Romania, Slova

27、kia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 14544:2013 has been approved by CEN as EN ISO 14544:2016 without any modification. DIN EN ISO 14544:2016-10 EN ISO 14544:2016 (E)3 ForewordISO (the International Organization for Standardizat

28、ion) 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 r

29、epresented 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 d

30、evelop 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

31、ISO/IEC Directives, Part 2. www.iso.org/directivesAttention 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 the

32、development of the document will be in the Introduction and/or on the ISO list of patent declarations received. www.iso.org/patentsAny trade name used in this document is information given for the convenience of users and does not constitute an endorsement.The committee responsible for this document

33、 is ISO/TC 206, Fine ceramics.DIN EN ISO 14544:2016-10 EN ISO 14544:2016 (E)4 1 ScopeThis International Standard specifies the conditions for determination of compression properties of ceramic matrix composite materials with continuous fibre reinforcement for temperatures up to 2 000 C.This Internat

34、ional Standard applies to all ceramic matrix composites with a continuous fibre reinforcement, unidirectional (1D), bidirectional (2D), and tridirectional (xD, with 2 x 3), loaded along one principal axis of reinforcement.Two types of compression are distinguished:a) compression between platens;b) c

35、ompression using grips.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced documen

36、t (including any amendments) applies.ISO 3611, Geometrical product specifications (GPS) Dimensional measuring equipment: Micrometers for external measurements Design and metrological characteristicsISO 7500-1, Metallic materials Verification of static uniaxial testing machines Part 1: Tension/compre

37、ssion testing machines Verification and calibration of the force-measuring systemEN 10002-4, Metallic materials Tensile test Part 4: Verification of extensometers used in uniaxial testingCEN/TS 15867:2009, Advanced technical ceramics Ceramic composites Guide to the determination of the degree of mis

38、alignment in unixial mechanical testsIEC 60584-1:1995, Thermocouples Part 1: Reference tablesIEC 60584-2:1982, Thermocouples Part 2: TolerancesIEC 60584-2:1982,Amendment 1:19893 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1test temperatureTtemp

39、erature of the test piece at the centre of the gauge lengthDIN EN ISO 14544:2016-10 EN ISO 14544:2016 (E)5 3.2calibrated lengthlpart of the test specimen that has uniform and minimum cross-section area3.3gauge lengthLoinitial distance between reference points on the test specimen in the calibrated l

40、ength3.4controlled-temperature zonepart of the calibrated length, including the gauge length, where the temperature is within a range of 50 C of the test temperature3.5initial cross-section areaAoinitial cross-section area of the test specimen within the calibrated length, at test temperatureNote 1

41、to entry: Two initial cross-section areas of the test specimen can be defined as follows.3.5.1apparent cross-section areatotal area of the cross section, Ao,a3.5.2effective cross-section areatotal area corrected by a factor, to account for the presence of an antioxidant protection, Ao,e3.6longitudin

42、al deformationLdecrease in the gauge length L between reference points under a compression force3.7compression strainrelative change in the gauge length defined as the ratio L/LoNote 1 to entry: Its value corresponding to the maximum force shall be denoted as c,m.3.8compression stresscompression for

43、ce supported by the test specimen at any time in the test divided by the initial cross-section area (Ao)Note 1 to entry: Two compression stresses can be distinguished: apparent compression stress, a, when the apparent cross-section area (or total cross-section area) is used; effective compression st

44、ress, e, when the effective cross-section area is used3.9maximum compression forceFmhighest recorded compression force in a compression test on the test specimen when tested to failureDIN EN ISO 14544:2016-10 EN ISO 14544:2016 (E)6 3.10compression strengthc,mratio of the maximum compression force (F

45、m) to the initial cross-section area (Ao)Note 1 to entry: Two compression strengths can be distinguished: apparent compression strength, c,m,a, when the apparent cross-section area (or total cross-section area) is used; effective compression strength, c,m,e, when the effective cross-section area is

46、used.3.11proportionality ratio or pseudo-elastic modulus, Epslope of the linear section of the stress-strain curve, if anyNote 1 to entry: Examination of the stress-strain curves for ceramic matrix composites allows definition of the following cases:a) Material with a linear section in the stress-st

47、rain curve.For ceramic matrix composites that have a mechanical behaviour characterized by a linear section, the proportionality ratio is defined as:Ep( ,)122122=(1)where (1, 1) and (2, 2) lie near the lower and upper limits of the linear section of the stress-strain curve.The proportionality ratio

48、or pseudo-elastic modulus is termed the elastic modulus, E, in the single case where the material has a linear behaviour from the origin.b) Material with no-linear section in the stress-strain curve.In this case only stress-strain couples can be fixed.Two proportionality ratios or pseudo-elastic moduli can be distinguished: apparent proportionality ratio, Epa, when the apparent comp