EN ISO 3386-1-1997 en Polymeric materials cellular flexible - Determination of stress-strain characteristic in compression - Part 1 Low-density materials (Incorporates Amendment A1.pdf

1、BRITISH STANDARDBS EN ISO3386-1:1997+A1:2010Polymeric materials, cellular flexible Determination of stress-strain characteristic in compression Part 1: Low-density materialsICS 83.100National forewordThis British Standard is the UK implementation of EN ISO 3386-1:1997+A1:2010. It is identical to ISO

2、 3386-1:1986, incorporating amendment 1:2010. It supersedes BS EN ISO 3386-1:1998 which is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags.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

3、by ISO amendment 1 is indicated by !“.The UK participation in its preparation was entrusted to Technical Committee PRI/24, Testing of rigid and flexible cellular materials.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purp

4、ort to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN ISO 3386-1:1997+A1:2010This British Standard, having been prepared under the direction of the Sector Boa

5、rd for Materials and Chemicals, was published under the authority of the Standards Board and comes into effect on15 January 1998 BSI 2010Amendments/corrigenda issued since publicationDate Comments 30 June 2010 Implementation of ISO amendment 1:2010 with CEN endorsement A1:2010; BSI and CEN publicati

6、on dates alignedISBN 978 0 580 62669 2EUROPEAN STANDARD NORME EUROP ENNE EUROPISCHE NORMEN ISO 3386-1:1997+A1April 2010ICS 83.100Descriptors: See ISO documentEnglish versionPolymeric materials, cellular flexible Determination of stress-strain characteristic in compression Part 1: Low-density materia

7、ls(ISO 3386-1:1986/AMD 1:2010)Matriaux polymres alvolaires souples Dtermination de la caractristique de contrainte-dformation relative en com-pression Partie 1: Matriaux basse masse volumique (ISO 3386-1:1986/AMD 1:2010)Weichelastische Schaumstoffe Bestimmung der Druckspannungs- Verformungseigenscha

8、ften Teil 1: Materialien mit niedriger Dichte (ISO 3386-1:1986/AMD 1:2010)This European Standard was approved by CEN on 16 October 1997.CEN members are bound to comply with the CEN/CENELEC InternalRegulations which stipulate the conditions for giving this European Standard the status of a national s

9、tandard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other

10、 language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions.CEN members are the national standards bodies of Austria, Belgium, Czech Re-p u b l i c , D e n m a r k , F i n l a n d ,

11、F r a n c e , G e r m a n y , G r e e c e , I c e l a n d , I r e l a n d , I t a l y , L u x-e m b o u r g , N e t h e r l a n d s , N o r w a y , P o r t u g a l , S p a i n , S w e d e n , S w i t z e r l a n d a n d U n i t e d Kingdom.CENEuropean Committee for Standardization Comit Europen de N

12、ormalisation Europ isches Komitee f r NormungCentral Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 3386-1:1997+A1:2010 EiiForewordThe text of the International Standard fr

13、om Technical Committee ISO/TC 61 Plastics of the International Organization for Standardization (ISO) has been taken over as an European Standard by Technical Committee CEN/TC 249 Plastics , the secretariat of which is held by IBN.This European Standard shall be given the status of a national standa

14、rd, either by publication of an identical text or by endorsement, at the latest by May 1998, and conflicting national standards shall be withdrawn at the latest by May 1998.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to

15、 implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.Endorsement noticeThe text of the International Standard ISO 3386-1:19

16、86 has been approved by CEN as a European Standard without any modification.NOTE Normative references to International Standards are listed in Annex ZA (normative).ContentsPage1 Scope and field of application 12 References 13 Definitions 14 Apparatus 15 Test pieces 16 Procedure 27 Expression of resu

17、lts 28 Repeat tests 29 Test report 2Annex ZA (normative) Normative references to international publications with their relevant European publications Inside back coverForeword to amendment A1 This document (EN ISO 3386-1:1997/A1:2010) has been prepared by Technical Committee ISO/TC 45 “Rubber and ru

18、bber 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, either by publication of an identical text or by endorsement, at the latest by October 2010, and conflicting

19、national standards shall be withdrawn at the latest by October 2010. 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 such patent rights. According to the

20、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, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

21、Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and theUnited Kingdom.Endorsement notice The text of ISO 3386-1:1986/Amd 1:2010 has been approved by CEN as a EN ISO 3386-1:1997/A1:2010 without any modification. BSI 2010BS E

22、N ISO 3386-1:1997+A1:2010EN ISO 3386-1:1997+A1:2010 (E)11 Scope and field of applicationThis part of ISO 3386 specifies a method for the determination of the compression stress/strain characteristic of low-density flexible cellular materials up to 250 kg/m3. It also indicates a method for the calcul

23、ation of the compression stress value of such materials.The compression stress/strain characteristic is a measure of the load-bearing properties of the material, though not necessarily of its capacity to sustain a long-term load.The compression stress/strain characteristic differs from the indentati

24、on hardness characteristics (as determined in accordance with ISO 2439), which are known to be influenced by the thickness and the tensile properties of the flexible cellular material under test, by the shape of the compression plate and by the shape and size of the test piece.ISO 3386/2 specifies a

25、 method for high-density materials and differs from part 1 in the following ways:it is mainly concerned with materials of density above 250 kg/m3;compression stress values have been deleted; it does not permit the use of a cylindrical test piece.2 ReferencesISO 1923, Cellular materials Determination

26、 of linear dimensions. ISO 2439, Polymeric materials, cellular flexible Determination of hardness (indentation technique). 3 DefinitionsFor the purposes of this International Standard the following definitions apply.3.1 compression stress/strain characteristic (CC)the stress, expressed in kilopascal

27、s1), required to produce a compression, at a constant rate of deformation during the fourth loading cycle of the test specified below, expressed as a function of the compression3.2 compression stress value (CV40)the compression stress/strain characteristic for a compression of 40 %4 Apparatus4.1 Tes

28、t machineThe test machine shall be capable of compressing the test piece between a support surface (see 4.2) and a compression plate (see 4.3), which shall have a uniform relative rate of motion in the vertical direction of 100 20 mm/min.4.2 Supporting surfaceUnless otherwise specified, the test pie

29、ce shall be supported on a smooth, flat, horizontal and rigid surface, larger than the test piece, which may be vented with holes about 6 mm in diameter, and approximately 20 mm pitch, to allow the escape of air from below the test piece.4.3 Compression plateThe compression plate shall be of any con

30、venient size and shape, provided that it overlaps the test piece in all directions. The lower surface shall be plane and smooth, but not polished, and it shall be maintained parallel to the supporting surface.5 Test pieces5.1 Form and dimensionsThe test piece shall be a right parallelepiped or a rig

31、ht cylinder with a minimum width or diameter/thickness ratio of 2 : 1. The preferred thickness of a test piece is 50 1 mm and in any case the thickness shall be not less than 10 mm. Sheets less than 10 mm thick shall be plied together to reach the preferred thickness range, provided that a minimum o

32、f ten cell diameters are included in the thickness of each ply.The area of the test piece shall be not less than 2 500 mm2and shall be such that at no point does the test piece overlap the compression plate.NOTE For specimens with an area close to the lower limit, the compression forces may be very

33、low, and specialized testing equipment may therefore be required to meet the precision specified in 4.1.5.2 Samples showing orientationIf the products show an orientation of the cellular structure, the direction in which the indentation is to be carried out shall be agreed upon between the intereste

34、d parties. Normally, testing is carried out in that direction in which the finished product will be stressed under service conditions.1) 1 kPa = 103N/m2ISO 7500-1, Metallic materials Veri c a t i o n o f static uniaxial testing machines Part 1: Tension/compression testing machines Veri c a t i o n a

35、 n d c a l i b r a t i o n o f t h e f o r c e -measuring systemThe test machine shall be capable of measuring the force with an accuracy corresponding to class 1 of ISO 7500-1 or with an accuracy of 1 N, and also of measuring the test piece thickness under load with an accuracy of 0,25 mm.!“!“ BSI

36、2010BS EN ISO 3386-1:1997+A1:2010EN ISO 3386-1:1997+A1:2010 (E)25.3 Number of test piecesThree test pieces shall be tested.5.4 Conditioning6 ProcedureMeasure the dimensions of the test piece using the appropriate procedure specified in ISO 1923 and calculate the area of the load-bearing face.Insert

37、the test piece in such a way that the force acts along the centre line of the test machine (4.1) and compress it at 100 20 mm/min by means of the compression plate (4.3) until a compression of % of the initial test piece thickness is attained or until the compression strain applied equals that speci

38、fied in the material specification. Then decompress the test piece at the same rate until the separation between the compression plate and the base plate is equal to the initial test piece thickness.Immediately repeat this procedure three times and on the fourth compression cycle read the force, in

39、newtons, at the specified strain.NOTE If measurements are required at multiple compression strains on a test piece, it is unnecessary to allow recovery time or to repeat the pre-loading procedure between the readings at each strain provided that measurements are taken in order of increasing magnitud

40、e of strain.7 Expression of results7.1 Compression stress/strain characteristicThe compression stress/strain characteristic at any required percentage compression, expressed in kilopascals, is given by the equationwhereCCxxis the compression stress/strain characteristic at a compression of xx %;70+5

41、0CCxx1 000FxxA- - - - - - - - - -=Fxxis the force, in newtons, recorded in the fourth loading cycle for a compression of xx %;A is the surface area, in square millimetres, of the test piece.7.2 Compression stress valueThe compression stress value, expressed in kilopascals, is given by the equationwh

42、ereCV40is the compression stress value at a compression of 40 %;F40is the force, in newtons, recorded in the fourth loading cycle for 40 % compression;A is the surface area, in square millimetres, of the test piece.8 Repeat testsFor repeat tests on the same test piece, a minimum recovery period of 1

43、6 h shall be observed.9 Test reportThe test peport shall include the following information:a) reference to this International Standard, i.e. ISO 3386/1;b) a description of the material;c) the temperature and humidity at which the test pieces were conditioned;d) the dimensions of the test piece used

44、and, if applicable, the number of plies;e) the compression stress/strain characteristics for individual test pieces, and their median, and/or the compression stress values for individual test pieces, and their median;f) other relevant information.NOTE An example of how to express compression stress/

45、strain characteristics briefly is as follows:ISO 3386/1 CC2523 C, 50 % relative humidityIndividual resultsMedian kPaCV401 000F40A- - - - - - - - -=Materials shall not be tested less than 72 h after manufacture unless it can be demonstrated that the mean results obtained at either 16 h or 48 h after

46、manufacture do not differ by more than 10% from those obtained after 72 h, in which case testing is permitted at 16 h or 48 h, respectively.Prior to the test, the test pieces shall be conditioned, undeflected and undistorted, for at least 16 h in one of the following atmospheres:23 C 2 C, (50 5) % r

47、elative humidity;27 C 2 C, (65 5) % relative humidity.This conditioning period can form the final part of or, in the case of testing 16 h after manufacture, the whole of the period following manufacture. In the case of quality-control tests, test pieces can be taken a shorter time (down to a minimum

48、 of 12 h) after manufacture and testing carried out after conditioning for a shorter period (down to a minimum of 6 h) in one of the atmospheres specified above.Testing shall be carried out at the same temperature and relative humidity as those used for conditioning.!“ BSI 2010BS EN ISO 3386-1:1997+

49、A1:2010EN ISO 3386-1:1997+A1:2010 (E)Annex ZA (normative) Normative references to international publications with their relevant European publicationsThis European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or re