1、BRITISH STANDARDBS EN ISO 9856:2003Conveyor belts Determination of elastic and permanent elongation and calculation of elastic modulusThe European Standard EN ISO 9856:2003 has the status of a British StandardICS 53.040.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g
2、44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 9856:2003 +A1:2012Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without l
3、icense from IHS-,-,-BS EN ISO 9856:2003+A1:2012ISBN 978 0 580 73493 9Amendments/corrigenda issued since publicationDate Comments31 August 2012 Implementation of ISO amendment 1:2012 with CEN endorsement A1:2012This British Standard was published under the authority of the Standards Policy and Strate
4、gy Committee on 16 January 2004 The British Standards Institution 2012. Published by BSI Standards Limited 2012National forewordThis British Standard is the UK implementation of EN ISO 9856:2003+A1:2012. It is identical to ISO 9856:2003, incorporating amendment 1:2012. It supersedes BS EN ISO 9856:2
5、003 which is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to ISO text carry the number of the ISO amendment. For example, text altered by ISO amendment 1 is indicated by .The UK participation in its preparation wa
6、s entrusted to Technical Committee PRI/67, Conveyor belts.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compl
7、iance with a British Standard cannot confer immunity from legal obligations.Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO
8、9856December 2003ICS 53.040.20 Supersedes EN ISO 9856:1995English versionConveyor belts - Determination of elastic and permanentelongation and calculation of elastic modulus (ISO 9856:2003)Courroies transporteuses - Dtermination de lallongementlastique et permanent et calcul du module dlasticit(ISO
9、9856:2003)Frdergurte - Bestimmung der elastischen und dauerhaftenDehnung und Berechnung des Elastizittsmoduls (ISO9856:2003)This European Standard was approved by CEN on 2 December 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givin
10、g this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (E
11、nglish, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republ
12、ic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre
13、: rue de Stassart, 36 B-1050 Brussels 2003 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 9856:2003 EEN ISO 9856:2003+A1July 2012Copyright European Committee for Standardization Provided by IHS under license with CENNot for Resa
14、leNo reproduction or networking permitted without license from IHS-,-,-I NESO 89:6520( 30E)2ForewordThis document (EN ISO 9856:2003) has been prepared by Technical Committee ISO/TC 41“Pulleys and belts (including veebelts)“ in collaboration with Technical Committee CEN/TC 188“Conveyor belts“, the se
15、cretariat of which is held by BSI.This European Standard shall be given the status of a national standard, either by publication ofan identical text or by endorsement, at the latest by June 2004, and conflicting national stand-ards shall be withdrawn at the latest by June 2004.This document supersed
16、es EN ISO 9856:1995.According to the CEN/CENELEC Internal Regulations, the national standards organizations ofthe following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,Luxembourg
17、, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland andthe United Kingdom.NOTE FROM CMC The foreword is susceptible to be amended on reception of the Germanlanguage version. The confirmed or amended foreword, and when appropriate, the normativeannex ZA for the references to
18、international publications with their relevant European public-ations will be circulated with the German version.Endorsement noticeThe text of ISO 9856:2003 has been approved by CEN as EN ISO 9856:2003 without anymodifications.BS EN ISO 9856:2003+A1:2012EN ISO 9856:2003+A1:2012Foreword to amendment
19、A1This document (EN ISO 9856:2003/Amd 1:2012) has been prepared by Technical CommitteeISO/TC 41 “Pulleys and belts (including veebelts)” in collaboration with Technical CommitteeCEN/TC 188 “Conveyor belts” the secretariat of which is held by SNV.This European Standard shall be given the status of a
20、national standard, either by publicationof an identical text or by endorsement, at the latest by January 2013, and conflicting nationalstandards shall be withdrawn at the latest by January 2013.Attention is drawn to the possibility that some of the elements of this document may be thesubject of pate
21、nt rights. CEN and/or CENELEC shall not be held responsible for identifying anyor all such patent rights.According to the CEN/CENELEC Internal Regulations, the national standards organizationsof the following countries are bound to implement this European Standard: Austria, Belgium,Bulgaria, Croatia
22、, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former YugoslavRepublic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia,Slovenia, Spain, Sweden, Switzerland, Turkey and the Uni
23、ted Kingdom.Endorsement noticeThe text of ISO 9856:2003/Amd 1:2012 has been approved by CEN as aEN ISO 9856:2003/A1:2012 without any modification.Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without licen
24、se from IHS-,-,-NITENRATIONALTSDNAARDOSI6589ceSdno deoitin23001-21-5Reference numberISO 9856:2003(E)Conveyor belts Determination of elastic and permanent elongation and calculation of elastic modulusCourroies transporteuses Dtermination de lallongement lastique et permanent et calcul du module dlast
25、icitINTERNATIONALSTANDARDISO9856Second edition2003-12-15Refecnern eumrebOSI 9856:002)E(3 OSI 2003noCveyor bestl teDenimroitatsale fo nci p dnaenamrtne noletagia noac dntaluclnoi le fom citsaoduulsruoCroies rtsnaoprtueess tDermiitanno ed lalolegnnemt lsaqiteu te repamnent lac tecud lu mudold elsaciti
26、tEN ISO 9856:2003Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-iiEN ISO 9856:2003BS EN ISO 9856:2003+A1:2012ISO 9856:2003+A1:2012Copyright European Committee for Standardizatio
27、n Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-iiiForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies(ISO member bodies). The work of preparing Internationa
28、l Standards is normally carried out through ISOtechnical committees. Each member body interested in a subject for which a technical committee has beenestablished has the right to be represented on that committee. International organizations, governmental andnon-governmental, in liaison with ISO, als
29、o take part in the work. ISO collaborates closely with the InternationalElectrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees
30、is to prepare International Standards. Draft International Standardsadopted by the technical committees are circulated to the member bodies for voting. Publication as anInternational Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility
31、 that some of the elements of this document may be the subject of patentrights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 9856 was prepared by Technical Committee ISO/TC 41, Pulleys and belts (including veebelts),Subcommittee SC 3, Conveyor belts.This second
32、 edition cancels and replaces the first edition (ISO 9856:1989), which has been technically revised.EN ISO 9856:2003BS EN ISO 9856:2003+A1:2012ISO 9856:2003+A1:2012Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permi
33、tted without license from IHS-,-,-ivIntroductionThis International Standard is used in a number of situations where the permanent elongation of the conveyorbelt after mechanical conditioning is of some practical relevance and in particular in the implementation ofISO 3870 and the application of ISO
34、5293.The equation for the calculation of the elastic modulus in the 1989 edition contained an error and omitted tocalculate the permanent elongation of the conveyor belt. In addition the figure illustrating the hysteresis loop ofthe conveyor belt during mechanical conditioning was misleading and amb
35、iguous.These omissions and anomalies have been corrected in the present edition.EN ISO 9856:2003BS EN ISO 9856:2003+A1:2012ISO 9856:2003+A1:2012Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license
36、 from IHS-,-,-ANRETNIITOTS LANDNADRA OSI 5893002:6)E(1Conveyor belts Determination of elastic and permanent elongation and calculation of elastic modulus1 ScopeThis International Standard specifies a method for determining the elastic and permanent elongation of aconveyor belt and the calculation of
37、 the elastic modulus.It is not applicable or valid for light conveyor belts as described in EN 873.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For datedreferences, only the edition cited applies. For undated references, the latest
38、edition of the referenced document(including any amendments) applies.ISO 282, Conveyor belts SamplingISO 283-1, Textile conveyor belts Full thickness tensile testing Part 1: Determination of tensile strength,elongation at break and elongation at the reference loadISO 7500-1:1), Metallic materials Ve
39、rification of static uniaxial testing machines Part 1:Tension/compression testing machines Verification and calibration of the force-measuring systemISO 18573, Conveyor belts Test atmospheres and conditioning periods3 Terms, definitions and symbolsFor the purposes of this document, the following ter
40、ms, definitions and symbols apply.3.1tensile strengthgreatest measured force during the tensile test (see ISO 283-1) divided by the width of the test piece, expressedin newtons per millimetre3.2nominal tensile strengthspecified minimum value of the tensile strength, expressed in newtons per millimet
41、re3.3upper reference forceforce equivalent to of multiplied by the test piece width, expressed in newtons1) To be published. (Revises ISO 7500-1:1999 and will replace EN 10002-2:1991)TFU10 % TEN ISO 9856:2003BS EN ISO 9856:2003+A1:2012ISO 9856:2003+A1:2012It is not applicable to or valid for light c
42、onveyor belts, as described in ISO 21183-1.force equivalent to 10 % of T, expressed in newtons per millimetreCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-23.4lower reference f
43、orceforce equivalent to of multiplied by the test piece width, expressed in newtons3.5specific force range factorspecific force range applied during the test, i.e. the upper reference force minus the lower reference forcedivided by the test piece width, expressed in newtons per millimetre3.6permanen
44、t elongationnon-recoverable change in length of the test piece after defined loading cycles, expressed in millimetres3.7elastic elongationrecoverable change in length of the test piece after defined loading cycles, expressed in millimetresNOTE The recovery from extension may be instantaneous or time
45、-dependent, or a combination of both.3.8reference lengthinitial length of the test piece, expressed in millimetres3.9permanent strainpermanent elongation, , expressed as a percentage of the reference length, NOTE This term is often referred to as “permanent stretch” in conveyor belt technology.3.10e
46、lastic strainelastic elongation, , expressed as a percentage of the reference length, NOTE This term is often referred to as “elastic stretch” in conveyor belt technology.3.11elastic modulusdivided by the fractional elastic elongation at the end of the specified number of cycles, expressed innewtons
47、 per millimetreNOTE This definition of the term deviates from that normally used in engineering, in which the modulus is expressed inunits of stress (i.e. a force per unit of cross-section), and is represented by the symbol .4 PrincipleA test piece, cut from the full thickness of the conveyor belt i
48、n the longitudinal direction, is subjected to a forcethat varies sinusoidally between defined limits. After 200 cycles, the amount of permanent elongation of the testpiece and the amount of elastic elongation produced by the force differential are recorded from aforce-elongation graph.FL2% TFF =FUFLlplelopermlploelastleloMFEEN ISO 9856:2003BS EN ISO 9856:2003+A1:2012ISO 9856:2003+A1:2012force equivalent to 2 % of T, expressed in newtons per millimetrespecific force range applied during the test, i.e. the upper reference force minus the lower reference fo
