BS EN ISO 527-5-2009 Plastics - Determination of tensile properties - Part 5 Test conditions for unidirectional fibre-reinforced plastic composites《塑料 张力性能测定 第5部分 单向纤维增强塑料合成物的测试条件》.pdf

1、BS EN ISO527-5:2009ICS 83.120NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDPlastics Determination oftensile propertiesPart 5: Test conditions forunidirectional fibre-reinforced plasticcompositesThis British Standardwas published under theauthority of the Stand

2、ardsPolicy and StrategyCommittee on 31 July 2009 BSI 2009ISBN 978 0 580 65490 9Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 527-5:2009National forewordThis British Standard is the UK implementation of EN ISO 527-5:2009.It supersedes BS EN ISO 527-5:1997 which is withdrawn.The

3、 UK participation in its preparation was entrusted to TechnicalCommittee PRI/42, Fibre reinforced thermosetting plastics and prepregs.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provis

4、ionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 527-5July 2009ICS 83.120 Supersedes EN ISO 527-5:1997 English VersionPlastics - Determination of

5、tensile properties - Part 5: Testconditions for unidirectional fibre-reinforced plastic composites(ISO 527-5:2009)Plastiques - Dtermination des proprits en traction -Partie 5: Conditions dessai pour les composites plastiquesrenforcs de fibres unidirectionnelles (ISO 527-5:2009)Kunststoffe - Bestimmu

6、ng der Zugeigenschaften - Teil 5:Prfbedingungen fr unidirektional faserverstrkteKunststoffverbundwerkstoffe (ISO 527-5:2009)This European Standard was approved by CEN on 13 June 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving t

7、his 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 CEN Management Centre or to any CEN member.This European Standard exists in three official versions (

8、English, 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 CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgari

9、a, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIO

10、NCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 527-5:2009: EBS EN ISO 527-5:2009EN ISO 527-5:2009 (E) 3 Forew

11、ord This document (EN ISO 527-5:2009) has been prepared 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

12、of an identical text or by endorsement, at the latest by January 2010, and conflicting national standards shall be withdrawn at the latest by January 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 n

13、ot be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 527-5:1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgar

14、ia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text o

15、f ISO 527-5:2009 has been approved by CEN as a EN ISO 527-5:2009 without any modification. BS EN ISO 527-5:2009ISO 527-5:2009(E) ISO 2009 All rights reserved iiiContents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Principle. 2 4 Terms and definitions. 2 5 Apparatus 4 6 Test specimens .

16、 4 7 Number of specimens 7 8 Conditioning 7 9 Procedure 7 10 Calculation and expression of results 7 11 Precision 7 12 Test report . 8 Annex A (normative) Specimen preparation . 9 Annex B (informative) Alignment of specimens . 11 BS EN ISO 527-5:2009ISO 527-5:2009(E) iv ISO 2009 All rights reservedF

17、oreword ISO (the International Organization for Standardization) 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 te

18、chnical committee has been established has the right to be represented 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

19、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 is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated

20、 to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention 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 f

21、or identifying any or all such patent rights. ISO 527-5 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 13, Composites and reinforcement fibres. This second edition cancels and replaces the first edition (ISO 527-5:1997), of which it constitutes a minor revision. The main ch

22、anges are as follows: the normative references have been updated; in 6.1.2, a thickness has been specified specifically for specimens from filament-wound test plates. ISO 527 consists of the following parts, under the general title Plastics Determination of tensile properties: Part 1: General princi

23、ples Part 2: Test conditions for moulding and extrusion plastics Part 3: Test conditions for films and sheets Part 4: Test conditions for isotropic and orthotropic fibre-reinforced plastic composites Part 5: Test conditions for unidirectional fibre-reinforced plastic composites BS EN ISO 527-5:2009I

24、NTERNATIONAL STANDARD ISO 527-5:2009(E) ISO 2009 All rights reserved 1Plastics Determination of tensile properties Part 5: Test conditions for unidirectional fibre-reinforced plastic composites 1 Scope 1.1 This part of ISO 527 specifies the test conditions for the determination of the tensile proper

25、ties of unidirectional fibre-reinforced plastic composites, based upon the general principles given in Part 1. 1.2 See ISO 527-1:1993, Subclause 1.2. 1.3 The test method is suitable for all polymer matrix systems reinforced with unidirectional fibres and which meet the requirements, including failur

26、e mode, set out in this part of ISO 527. The method is suitable for composites with either thermoplastic or thermosetting matrices, including preimpregnated materials (prepregs). The reinforcements covered include carbon fibres, glass fibres, aramid fibres and other similar fibres. The reinforcement

27、 geometries covered include unidirectional (i.e. completely aligned) fibres and rovings and unidirectional fabrics and tapes. The method is not normally suitable for multidirectional materials composed of several unidirectional layers at different angles (see ISO 527-4). 1.4 The method is performed

28、using one of two different types of test specimen, depending on the direction of the applied stress relative to the fibre direction (see Clause 6). 1.5 See ISO 527-1:1993, Subclause 1.5. 2 Normative references The following referenced documents are indispensable for the application of this document.

29、 For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 527-1:1993, Plastics Determination of tensile properties Part 1: General principles ISO 527-4, Plastics Determination of tensile proper

30、ties Part 4: Test conditions for isotropic and orthotropic fibre-reinforced plastic composites ISO 1268 (all parts), Fibre-reinforced plastics Methods of producing test plates ISO 2818, Plastics Preparation of test specimens by machining ISO 3534-1, Statistics Vocabulary and symbols Part 1: General

31、statistical terms and terms used in probability BS EN ISO 527-5:2009ISO 527-5:2009(E) 2 ISO 2009 All rights reserved3 Principle See ISO 527-1:1993, Clause 3. 4 Terms and definitions For the purposes of this document, the following terms and definitions apply. 4.1 gauge length See ISO 527-1:1993, Sub

32、clause 4.1. 4.2 speed of testing See ISO 527-1:1993, Subclause 4.2. 4.3 tensile stress (engineering) See ISO 527-1:1993, Subclause 4.3, except that for type A specimens is defined as 1and for type B specimens as 2(see Clause 6 for details of type A and B specimens). 4.3.1 tensile strength M See ISO

33、527-1:1993, Subclause 4.3.3, except that Mfor type A specimens is defined as M1and for type B specimens as M2. 4.4 tensile strain increase in length per unit length of the original gauge length NOTE 1 For type A specimens, is defined as 1and for type B specimens as 2. NOTE 2 It is expressed as a dim

34、ensionless ratio or in percent. 4.5 tensile strain at tensile strength tensile failure strain Mtensile strain at the point corresponding to the tensile strength of the specimen NOTE 1 For type A specimens, Mis defined as M1and for type B specimens as M2. NOTE 2 It is expressed as a dimensionless rat

35、io or in percent. BS EN ISO 527-5:2009ISO 527-5:2009(E) ISO 2009 All rights reserved 34.6 modulus of elasticity in tension Youngs modulus E See ISO 527-1:1993, Subclause 4.6, except that E for type A specimens is defined as E1and for type B specimens as E2. NOTE The strain values used are as given i

36、n ISO 527-1:1993, Subclause 4.6, i.e. = 0,000 5 and = 0,002 5 (see Figure 1), unless alternative values are given in the material or technical specifications. 4.7 Poissons ratio See ISO 527-1:1993, Subclause 4.7, except that for type A specimens bis defined as 12and has 13, using the coordinates sho

37、wn in Figure 2, and for type B specimens bis defined as 21and has 23. 4.8 specimen coordinate axes coordinate axes for the material under test, as shown in Figure 2, the direction parallel to the fibres being defined as the “1”-direction and the direction perpendicular to them (in the plane of the f

38、ibres) as the “2”-direction NOTE The “1”-direction is also referred to as the 0 or longitudinal direction and the “2”-direction as the 90 or transverse direction. Key X strain, Y stress, aSlope E. Figure 1 Stress-strain curve BS EN ISO 527-5:2009ISO 527-5:2009(E) 4 ISO 2009 All rights reservedFigure

39、 2 Unidirectionally reinforced plastic composite showing axes of symmetry 5 Apparatus See ISO 527-1:1993, Clause 5, except for the following: The micrometer or its equivalent (see 5.2.1) shall read to 0,01 mm or better. It shall have a suitable-size ball-ended anvil if used on irregular surfaces and

40、 a flat anvil if used on flat, smooth (e.g. machined) surfaces. Subclause 5.2.2 does not apply. Care shall be exercised to ensure that the pressure exerted by the grips (see 5.1.3) is only sufficient to prevent the specimen slipping in the grip when loaded to failure. Excessive grip pressure may cau

41、se crushing of the specimen due to the low transverse strength of these materials. Hydraulic grips which can be set at a constant grip pressure are preferred. If strain gauges bonded to the specimen are used, the errors produced by the transverse effect on the transverse gauge will generally be much

42、 larger for anisotropic composites than for metals, which are isotropic. Accurate measurement of Poissons ratio requires correction for this effect. NOTE It is recommended that alignment of the specimen and loading train be checked as described in Annex B. 6 Test specimens 6.1 Shape and dimensions 6

43、.1.1 General Two types of test specimen are specified for use with this part of ISO 527, depending on the direction of test relative to the fibre direction, as detailed and illustrated in Figure 3. BS EN ISO 527-5:2009ISO 527-5:2009(E) ISO 2009 All rights reserved 5Dimensions in millimetres Key 1 sp

44、ecimen 2 tab 3 jaws aTab-fibre orientation. bFibre direction in type B specimen. cFibre direction in type A specimen. dZone covered by jaws. Dimensions in millimetres Type A Type B L3Overall length 250 250 (see Note 2) L2Distance between end tabs 150 1 150 1 b1Width 15 0,5 25 0,5 h Thickness 1 0,2 2

45、 0,2 L0Gauge length (recommended for extensometers) 50 1 50 1 L Initial distance between grips (nominal) 136 136 LTLength of end tabs 50 50 (see Note 2) hTThickness of end tabs 0,5 to 2 0,5 to 2 NOTE 1 Requirements on specimen quality and parallelism are given in Clause 6. NOTE 2 For specimens taken

46、 from filament-wound plates prepared using ISO 1268-5, an overall specimen length of 200 mm is acceptable, with an end-tab length of 25 mm. Figure 3 Type A and type B specimens BS EN ISO 527-5:2009ISO 527-5:2009(E) 6 ISO 2009 All rights reserved6.1.2 Type A specimen (for longitudinal direction) Type

47、 A specimens shall have a width of 15 mm 0,5 mm, an overall length of 250 mm and a thickness of 1 mm 0,2 mm or, for specimens from filament-wound test plates, a thickness of 2 mm 0,2 mm. The sides of each individual specimen shall be parallel to within 0,2 mm. 6.1.3 Type B specimen (for transverse d

48、irection) Type B specimens shall have a width of 25 mm 0,5 mm, an overall length of 250 mm and a thickness of 2 mm 0,2 mm. The sides of each individual specimen shall be parallel to within 0,2 mm. For type B specimens taken from filament-wound plates prepared using ISO 1268-5, a test specimen length

49、 of 200 mm is acceptable. 6.2 Preparation of specimens 6.2.1 General In the case of moulding and lamination materials, prepare a test plate in accordance with the relevant part of ISO 1268 or another specified/agreed procedure. Cut individual specimens, or groups of specimens (see Annex A), from the test plate. In the case of finished products (for example, for quality control during manufacture or on delivery), take specimens fr