EN ISO 9513-2012 en Metallic materials - Calibration of extensometer systems used in uniaxial testing《金属材料 伸长计的校准系统中使用单轴测试》.pdf

1、BSI Standards PublicationMetallic materials Calibration of extensometer systems used in uniaxial testingBS EN ISO 9513:2012BS EN ISO 9513:2012Incorporating corrigendum May 2013BS EN ISO 9513:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 9513:2012. It

2、is identical to ISO 9513:2012, incorporating corrigendum May 2013. It supersedes BS EN ISO 9513:2002 which is withdrawn.The start and finish of text introduced or altered by corrigendum is indicated in the text by tags. Text altered by ISO corrigendum May 2013 is indicated in the text by .The UK par

3、ticipation in its preparation was entrusted by Technical Committee ISE/101, Test methods for metals, to Subcommittee ISE/101/1, Uniaxial testing.A list of organizations represented on this subcommittee can be obtained on request to its secretary.This publication does not purport to include all the n

4、ecessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2013 Published by BSI Standards Limited 2013ISBN 978 0 580 83326 7ICS 17.040.30; 77.040.10Compliance with a British Standard cannot confer immunity from legal obligations.This Brit

5、ish Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2013.Amendments/corrigenda issued since publicationDate Text affected31 August 2013 Implementation of ISO corrigendum May 2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 9513 Dece

6、mber 2012 ICS 77.040.10 Supersedes EN ISO 9513:2002English Version Metallic materials - Calibration of extensometer systems used in uniaxial testing (ISO 9513:2012) Matriaux mtalliques - talonnage des chanes extensomtriques utilises lors dessais uniaxiaux (ISO 9513:2012) Metallische Werkstoffe - Kal

7、ibrierung von Lngennderungs-Messeinrichtungen fr die Prfung mit einachsiger Beanspruchung (ISO 9513:2012) This European Standard was approved by CEN on 14 December 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European

8、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 European Standard exists in three official versions (En

9、glish, 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 the national standards bodies of Austria, Belgium

10、, 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, Slovakia, Slovenia, Spain, Sweden, Switzerla

11、nd, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref.

12、No. EN ISO 9513:2012: EBS EN ISO 9513:2012EN ISO 9513:2012 (E) 3 Foreword This document (EN ISO 9513:2012) has been prepared by Technical Committee ISO/TC 164 “Mechanical testing of metals“ in collaboration with Technical Committee ECISS/TC 101 “Test methods for steel (other than chemical analysis)”

13、 the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2013, and conflicting national standards shall be withdrawn at the latest by June 2013. Attention i

14、s drawn to the possibility that some of the elements of this document 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 ISO 9513:2002. According to the CEN/CENELEC Internal Regulations, the

15、 national standards organisations of the following countries are bound 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

16、, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 9513:2012 has been approved by CEN as a EN ISO 9513:2012 without any modification. BS EN ISO 9513:2012ISO

17、9513:2012(E) ISO 2012 All rights reserved iiiContents PageIntroduction v1 Scope 12 Terms and definitions . 13 Symbols and designations . 14 Principle . 25 Calibration equipment 25.1 Calibration apparatus . 25.2 Calibration traceability . 26 Pre-calibration inspection . 26.1 Objective 26.2 Records of

18、 the inspection . 36.3 Identification of extensometer system elements 37 Measurement of extensometer gauge length 37.1 Fixed gauge length extensometry 37.2 Variable gauge length extensometry . 37.3 Non-contacting extensometry . 47.4 Extensometer gauge lengths established using setting gauges . 48 Ca

19、libration process . 48.1 Environmental considerations . 48.2 Position of the extensometer . 48.3 Calibration increments . 48.4 Calibration process . 68.5 Determination of the characteristics of the extensometer system 69 Classification of the extensometer system 79.1 Input data . 79.2 Analysis of th

20、e data 79.3 Classification criteria . 79.4 Assessment of the results 710 Uncertainty determination 810.1 Uncertainty of the calibration . 810.2 Uncertainty budget determination 811 Extensometer system calibration intervals 812 Calibration certificate . 812.1 Mandatory information . 812.2 Data presen

21、tation 9Annex A (informative) Uncertainty of measurement .10Annex B (informative) Calibration of the calibration apparatus 15Annex C (informative) Example of a report of the calibration of calibration apparatus 17Annex D (informative) Examples of extensometer system configurations 20Annex E (informa

22、tive) Laser extensometry .29Annex F (informative) Video extensometry .37Annex G (informative) Full field strain measurement video extensometry 41Annex H (informative) Calibration of a cross-head measurement system .43Bibliography .44BS EN ISO 9513:2012ISO 9513:2012(E)IntroductionThis International S

23、tandard sets out criteria for the calibration of extensometer systems, covering general principles, the calibration equipment to be used, pre-calibration inspection and the measurement of gaugelength for various types of extensometer systems. Aspects of the calibration process are addressed, as are

24、the assessment of the results, uncertainties, calibration intervals and reporting. Criteria for calibration apparatus, their calibration and grading are addressed, complemented by a Bibliography covering a number of important papers related to extensometer systems and their application 1 to 10. Work

25、 is in progress to develop processes for dynamic extensometer calibration, however these have not reached, at the time of writing of this International Standard, the level of development appropriate for inclusion within this International Standard. For further information, refer to Reference 6.Infor

26、mative annexes address calculation of uncertainties of measurement for an extensometer system calibration (Annex A), calibration of calibration apparatus (Annex B) and an example of a calibration report (Annex C). Subsequent annexes address examples of extensometer system configurations (Annex D), l

27、aser extensometry (Annex E), video extensometry (Annex F), full field extensometry (Annex G) and calibration of a crosshead measurement system (Annex H). ISO 2012 All rights reserved vBS EN ISO 9513:2012ISO 9513:2012(E) ISO 2012 All rights reserved iiiContents PageIntroduction v1 Scope 12 Terms and

28、definitions . 13 Symbols and designations . 14 Principle . 25 Calibration equipment 25.1 Calibration apparatus . 25.2 Calibration traceability . 26 Pre-calibration inspection . 26.1 Objective 26.2 Records of the inspection . 36.3 Identification of extensometer system elements 37 Measurement of exten

29、someter gauge length 37.1 Fixed gauge length extensometry 37.2 Variable gauge length extensometry . 37.3 Non-contacting extensometry . 47.4 Extensometer gauge lengths established using setting gauges . 48 Calibration process . 48.1 Environmental considerations . 48.2 Position of the extensometer . 4

30、8.3 Calibration increments . 48.4 Calibration process . 68.5 Determination of the characteristics of the extensometer system 69 Classification of the extensometer system 79.1 Input data . 79.2 Analysis of the data 79.3 Classification criteria . 79.4 Assessment of the results 710 Uncertainty determin

31、ation 810.1 Uncertainty of the calibration . 810.2 Uncertainty budget determination 811 Extensometer system calibration intervals 812 Calibration certificate . 812.1 Mandatory information . 812.2 Data presentation 9Annex A (informative) Uncertainty of measurement .10Annex B (informative) Calibration

32、 of the calibration apparatus 15Annex C (informative) Example of a report of the calibration of calibration apparatus 17Annex D (informative) Examples of extensometer system configurations 20Annex E (informative) Laser extensometry .29Annex F (informative) Video extensometry .37Annex G (informative)

33、 Full field strain measurement video extensometry 41Annex H (informative) Calibration of a cross-head measurement system .43Bibliography .44BS EN ISO 9513:2012ISO 9513:2012(E)IntroductionThis International Standard sets out criteria for the calibration of extensometer systems, covering general princ

34、iples, the calibration equipment to be used, pre-calibration inspection and the measurement of gaugelength for various types of extensometer systems. Aspects of the calibration process are addressed, as are the assessment of the results, uncertainties, calibration intervals and reporting. Criteria f

35、or calibration apparatus, their calibration and grading are addressed, complemented by a Bibliography covering a number of important papers related to extensometer systems and their application 1 to 10. Work is in progress to develop processes for dynamic extensometer calibration, however these have

36、 not reached, at the time of writing of this International Standard, the level of development appropriate for inclusion within this International Standard. For further information, refer to Reference 6.Informative annexes address calculation of uncertainties of measurement for an extensometer system

37、 calibration (Annex A), calibration of calibration apparatus (Annex B) and an example of a calibration report (Annex C). Subsequent annexes address examples of extensometer system configurations (Annex D), laser extensometry (Annex E), video extensometry (Annex F), full field extensometry (Annex G)

38、and calibration of a crosshead measurement system (Annex H). ISO 2012 All rights reserved vBS EN ISO 9513:2012Metallic materials Calibration of extensometer systems used in uniaxial testing1 ScopeThis International Standard specifies a method for the static calibration of extensometer systems used i

39、n uniaxial testing, including axial and diametral extensometer systems, both contacting and non-contacting.2 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.2.1extensometer systemequipment used to measure displacement or strain on the surface of a te

40、st pieceNOTE For the purpose of this International Standard, the term “extensometer system” includes the indicator. Some extensometers indicate strain directly (e.g. laser extensometers or digital image correlation techniques). Other extensometers indicate the change in gauge length of a test piece;

41、 this is converted into strain by dividing by the relevant gauge length.2.2gauge lengthportion of a test piece where extension is measured3 Symbols and designationsSymbols used throughout this International Standard are given in Table 1 together with their designation.Table 1 Symbols and designation

42、sSymbol Designation UnitLeNominal gauge length of extensometer mmLnulleMeasured gauge length of extensometer mmlmaxMaximum limit of calibration range mmlminMinimum limit of calibration range mmliDisplacement indicated by extensometer mltDisplacement given by calibration apparatus mqLeRelative gauge

43、length error of the extensometer system%qrbRelative bias error of the extensometer system %qbAbsolute bias error of the extensometer system mr Resolution of the extensometer system mINTERNATIONAL STANDARD ISO 9513:2012(E) ISO 2012 All rights reserved 1BS EN ISO 9513:2012ISO 9513:2012(E)4 PrincipleTh

44、e calibration of extensometer systems involves a comparison of the readings given by the extensometer with known variations in length provided by a calibration apparatus.NOTE 1 The user can define the displacement range(s) over which the calibration is to be performed. In this way, the performance o

45、f the extensometer system can be optimized. For example, for strain-controlled low cycle fatigue, only a small portion of the operating range of the extensometer is typically used. Hence, it would be appropriate, in this case, to concentrate the calibration on the centre portion of the operating ran

46、ge.The calibration process compares the known displacement from the calibration device with the output of the extensometer system. This output can range from manual readings of high precision dial gauges to the displacement indication of a transducer/electronics/data-logging system. In the latter ca

47、se, the extensometer system output would include any data curve fitting applied by the electronics/data-logging system.NOTE 2 For certain types of extensometer systems, the calibration and classification will also be dependent upon the ability of the extensometer system to define the gauge length.5

48、Calibration equipment5.1 Calibration apparatusThe calibration apparatus, which allows a known displacement ltto be applied to the extensometer, may consist of a rigid frame with suitable coaxial spindles or other fixtures to which the extensometer can be attached. The calibration apparatus shall com

49、prise a mechanism for moving at least one of the axial spindles together with a device for accurately measuring the change in length produced. These variations in length can be measured by, for example, an interferometer, a linear incremental encoder or gauge blocks and a comparator, or a micrometer.NOTE Special attachments to the calibration apparatus spindles are utilized for the calibration of diametral extensometers.The calibration apparatus should be calibrated in accordance with Annex B and should meet the performance requireme