1、BSI Standards PublicationBS EN ISO 3385:2014Incorporating corrigendum August 2014BS EN ISO 3385:2014Flexible cellular polymericmaterials Determinationof fatigue by constant-loadpoundingBS EN ISO 3385:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 3385:
2、2014.It supersedes BS EN ISO 3385:1995 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/24, Testing of rigid and flexible cellular materials.A list of organizations represented on this committee can beobtained on request to its secretary.This publica
3、tion does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 71674 4ICS 83.100Compliance with a British Standard cannot confer immunity fromle
4、gal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2014.Amendments issued since publicationDate Text affectedISBN 978 0 580 87761 2Amendments/corrigenda issued since publicationDate Text affected31 August 2014 Implementati
5、on of CEN Correction Notice 6 August 2014: ISO committee reference in EN Foreword correctedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3385 July 2014 ICS 83.100 Supersedes EN ISO 3385:1995English Version Flexible cellular polymeric materials - Determination of fatigue by constant-load p
6、ounding (ISO 3385:2014) Matriaux polymres alvolaires souples - Dtermination dela fatigue par indentation charge constante (ISO 3385:2014) Weich-elastische polymere Schaumstoffe - Bestimmung der Ermdung im Dauerschwingversuch mit Stobelastung unter konstanter Kraft (ISO 3385:2014) This European Stand
7、ard was approved by CEN on 28 June 2014. 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 concerning suc
8、h 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 member into its own
9、 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, France, Germany, G
10、reece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMU
11、NG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 3385:2014 EBS EN ISO 3385:2014EN ISO 3385:2014 (E) 3 Foreword This document (EN ISO 3385:2014) has been pr
12、epared by Technical Committee ISO/TC 61 “Plastics“ in collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the la
13、test by January 2015, and conflicting national standards shall be withdrawn at the latest by January 2015. Attention is 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
14、 such patent rights. This document supersedes EN ISO 3385:1995. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Esto
15、nia, 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, Switzerland, Turkey and the United Kingdom. Endorsement notice The
16、text of ISO 3385:2014 has been approved by CEN as EN ISO 3385:2014 without any modification. EN ISO 3385:2014 (E) 3 Foreword This document (EN ISO 3385:2014) has been prepared by Technical Committee ISO/TC 45 “Rubber and rubber products“ n collaboration with Technical Committee CEN/TC 249 “Plastics”
17、 the secretariat of which isheld by NBN. This European Standard shall be given the status of a national standard, either by publication of an ident cal text or by endorsement, at the latest by January 2015, and conflicting national standards shall be withdrawn at the latest by January 2015. Attentio
18、n is 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 3385:1995. According to the CEN-CENELEC Internal Regulations,
19、the national standards organizations 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, Lat
20、via, Lithuania, Luxembourg, Malta, N therlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 3385:2014 has been approved by CEN as EN ISO 3385:2014 without any modification. EN ISO 3385:2014 (E) 3
21、 Foreword This document (EN ISO 3385:2014) has been prepared by Technical Committee ISO/TC 45 “Rubber and rubber products“ in collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN. This European Standard shall be given the status of a national standard,
22、 either by publication of an identical text or by endorsement, at the latest by January 2015, and conflicting national standards shall be withdrawn at the latest by January 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN
23、 and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 3385:1995. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Au
24、stria, 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, Slovakia, Slovenia, Spain, Swe
25、den, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 3385:2014 has been approved by CEN as EN ISO 3385:2014 without any modification. BS EN ISO 3385:2014ISO 3385:2014(E) ISO 2014 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative references 13 Princi
26、ple 14 Apparatus . 15 Test pieces . 45.1 Shape and dimensions 45.2 Samples showing orientation . 55.3 Number 55.4 Conditioning 56 Procedure. 57 Expression of results 67.1 Loss in thickness 67.2 Loss in hardness 77.3 Percentage hardness loss . 78 Precision . 79 Test report . 7Annex A (informative) Ty
27、pical loading cycle 9Annex B (informative) Precision 10Annex C (informative) Precision study Machine Type B 12Bibliography .13BS EN ISO 3385:2014ISO 3385:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies)
28、. 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, governmental and non
29、-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 develop this document and those intended for its further maintenance are describ
30、ed 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/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to t
31、he 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 development of the document will be in the Introduction and/or on the ISO
32、 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 of ISO specific terms and expressions related to conformity assessment, as w
33、ell as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information.The committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee SC 4, Products other than hoses.This f
34、ourth edition cancels and replaces the third edition (ISO 3385:1989), which has been technically revised.iv ISO 2014 All rights reservedBS EN ISO 3385:2014INTERNATIONAL STANDARD ISO 3385:2014(E)Flexible cellular polymeric materials Determination of fatigue by constant-load pounding1 ScopeThis Intern
35、ational Standard specifies a method for the determination of loss in thickness and loss in hardness of flexible cellular materials intended for use in load-bearing applications such as upholstery.It provides a means of assessing the service performance of flexible cellular materials based on rubber
36、latex or polyurethane used in load-bearing upholstery.The method is applicable both to standard size test pieces cut from slabstock material and to shaped components. The measured loss in thickness and loss in hardness are related to, but are not necessarily the same as, the losses likely to occur i
37、n service.This international Standard is not intended to function as a detailed engineering design specification for fatigue apparatus. 2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated
38、 references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 2439:2008, Flexible cellular polymeric materials Determination of hardness (indentation technique)3 PrincipleRepeated indentation of a test piece
39、by an indentor smaller in area than the test piece, the maximum load reached during each cycle being kept within specified limits. The typical loading cycle is shown in Figure A.1.4 Apparatus4.1 Pounding test machine of either Type A (see 4.2) or Type B (see 4.3), having the following parts.4.1.1 Pl
40、ane platen, capable of fully supporting the test piece, and suitably vented with holes approximately 6 mm in diameter at approximately 20 mm pitch in order to allow air to escape from the test piece.4.1.2 Indentor, having an overall diameter of 250 mm 1 mm with a 25 mm 1 mm radius at its lower edge,
41、 provided with a device for applying a maximum force of 750 N 20 N during the loading cycle. The indentor shall be rigidly fixed to its guide and its surface shall be smooth but not polished.The machine shall be capable of oscillating either the platen (4.1.1) carrying the test piece, or the indento
42、r towards the other in a vertical direction at a rate of (70 5) strokes per minute. The amplitude of the stroke shall be adjustable.The indentor shall be linked to a re-settable counting device which displays the number of compression cycles performed during the test. ISO 2014 All rights reserved 1B
43、S EN ISO 3385:2014ISO 3385:2014(E)4.1.3 Indentor drive mechanism, capable of applying the maximum force of 750 N 20 N for no more than 10 % of the total duration of each cycle.4.2 Machine Type A, in its simplest form the mechanism comprises a crank drive and suspended weight. The weight shall be sup
44、ported throughout the loading cycle except at that part of the stroke when the mounting and platen are closest together. At this point, the full force of the indentor shall be supported by the test piece; this shall not be for more than 10 % of the full machine cycle. This type of device is shown sc
45、hematically in Figure 1 a) and Figure 1 b). The moving platen (5) shall be fitted with appropriate means to locate the test piece and prevent its lateral movement during the test.a) Full loading point b) Zero load pointKey1 load frame2 indentor mounting3 indentor4 test piece5 moving platen6 drive sh
46、aft/camFigure 1 Example of an arrangement of machine Type A with manual adjustment4.3 Machine Type B, a fully controlled device driven by electro-, pneumatic or hydraulic mechanism, equipped with load cell and means to provide the necessary indentation frequency and peak force. The generic form of m
47、achine Type B is illustrated schematically in Figure 2. Figure 3 is an outline drawing of one of the commercially available machines, but is not meant to exclude other machines that comply with the essential requirements.The apparatus shall be capable of measuring the maximum force with a precision
48、of 1 %. Compliance with specified limits shall be provided by graphical or other visual display.2 ISO 2014 All rights reservedBS EN ISO 3385:2014ISO 3385:2014(E)Key1 load frame2 actuator (electro-mechanical, pneumatic or servo-hydraulic)3 indentor4 test piece5 support platen6 load cellFigure 2 Examp
49、les of diagrammatic arrangements of machine Type B with fully automatic adjustment a) Generic design ISO 2014 All rights reserved 3BS EN ISO 3385:2014ISO 3385:2014(E)Key1 beam2 electromechanical, pneumatic or hydraulic cylinder3 flow control valve4 load cell adapter5 load cell6 indentor7 test piece8 base plateFigure 3 Examples of diagrammatic arrangements of machine Type B with fully automatic adjustment b) Example of one commercially available apparatusType B machines shall be equipped with a force-measurement device, whe
