1、BRITISH STANDARD BSENISO 527-4:1997 BS2782-3: Method 326F:1997 Plastics Determination of tensile properties Part 4: Test conditions for isotropic and orthotropic fibre-reinforced plastic composites The European Standard EN ISO 527-4:1997 has the status of a British Standard ICS 83.120BSENISO527-4:19
2、97 ThisBritish Standard, having been prepared under the directionof the Sector Board forMaterials and Chemicals, waspublished under the authorityof the Standards Boardand comes into effect on 15 July 1997 BSI 09-1999 ISBN 0 580 27558 2 National foreword This British Standard is the English language
3、version of EN ISO 527-4:1997. It is identical with ISO 527-4:1997. The UK participation in its preparation was entrusted to Technical Committee PRI/42, Fibre reinforced thermosetting plastics and prepregs, which has the responsibility to: aid enquirers to understand the text; present to the responsi
4、ble international/European committee any enquiries on the interpretation, or proposals for change, and keep the UKinterests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on reques
5、t to its secretary. Cross-references Attention is drawn to the fact that Annex ZA lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standa
6、rds Catalogue under the section entitled “International Standards Correspondence Index”, or using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for t
7、heir correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theENISOtitlepage, page 2, the ISO title page, pages ii to iv,pages 1 to 8 anda back
8、cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSENISO527-4:1997 BSI 09-1999 i Contents Page National foreword Insi
9、de front cover Foreword 2 Foreword iii Text of ISO 527-4 1ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 527-4 April 1997 ICS 83.120 Descriptors: See ISO document English version Plastics Determination of tensile properties Part4:Test conditions for isotropic and orthotropic fibre-
10、reinforced plastic composites (ISO 527-4:1997) Plastiques Dtermination des proprits en traction Partie 4: Conditions dessai pour lescomposites plastiques renforcs de fibres isotropes et orthotropes (ISO 527-4:1997) Kunststoffe Bestimmung der Zugeigenschaften Teil 4: Prfbedingungen fr isotrop und ani
11、sotrop faserverstrkte Kunststoffverbundwerkstoffe (ISO 527-4:1997) This European Standard was approved by CEN on 1997-03-28. 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 wi
12、thout 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. The European Standards exist in three official versions (English, French, German). A version in any other language
13、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, CzechRepublic, Denmark, Finland, France, Germany, Greece, Icelan
14、d, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploi
15、tation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 527-4:1997 EENISO527-4:1997 BSI 09-1999 2 Foreword The text of the International Standard ISO 527-4:1997 has been prepared by Technical Committee ISO/TC 61 “Plastics” in collaboration with Technical Comm
16、ittee CEN/TC 249 “Plastics”, the secretariat of which is held by IBN. ISO 527 contains the following parts with the general title: “Plastics Determination of tensile properties”. Part 1: General principles Part 2: Test conditions for moulding and extrusion plastics Part 3: Test conditions for films
17、and sheets Part 4: Test conditions for isotropic and orthotropic fibre-reinforced plastic composites Part 5: Test conditions for unidirectional fibre-reinforced plastic composites This European Standard shall be given the status of a national standard, either by publication of an identical text or b
18、y endorsement, at the latest by October 1997, and conflicting national standards shall be withdrawn at the latest by October 1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria
19、, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 527-4:1997 was approved by CEN as a European Standard without any
20、 modification. NOTENormative references to International Standards are listed in Annex ZA (normative).ENISO527-4:1997 ii BSI 09-1999 Contents Page Foreword iii 1 Scope 1 2 Normative references 1 3 Principle 1 4 Definitions 1 5 Apparatus 2 6 Test specimens 2 7 Number of specimens 5 8 Conditioning 5 9
21、 Procedure 5 10 Calculation and expression of results 5 11 Precision 5 12 Test report 5 Annex A (normative) Specimen preparation 6 Annex B (informative) Alignment of specimens 7 Annex ZA (normative) Normative references to international publications with their relevant European publications 8 Figure
22、 1 Stress-strain curve 2 Figure 2 Fibre-reinforced plastic composite showing axes of symmetry 2 Figure 3 Type 1B specimen 3 Figure 4 Type 2 and type 3 specimens 4 Figure A.1 Tabbed panel for specimen preparation 6 Figure B.1 Strain-gauge locations (SG1, SG2 and SG3) for system alignment check 7ENISO
23、527-4:1997 BSI 09-1999 iii Foreword 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
24、 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-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Comm
25、ission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an InternationalStandard requires approval by at least 75 % of the member bodies casting a vote. Internati
26、onal Standard ISO 527-4 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 2, Mechanical properties. Together with part 5, this part of ISO 527 cancels and replaces the first edition of ISO 3268 (ISO 3268:1978) which has been technically revised. ISO 527 consists of the followi
27、ng parts, under the general title Plastics Determination of tensile properties: Part 1: General principles; Part 2: Test conditions for moulding and extrusion plastics; Part 3: Test conditions for sheet and film; Part 4: Test conditions for isotropic and orthotropic fibre-reinforced plasticcomposite
28、s; Part 5: Test conditions for unidirectional fibre-reinforced plastic composites; Annex A forms an integral part of this part of ISO 527. Annex B is for informationonly. Descriptors: Plastics, reinforced plastics, tests, tension tests, determination, tensile properties, testing conditions, test spe
29、cimens.iv blankENISO527-4:1997 BSI 09-1999 1 1 Scope 1.1 This part of ISO 527 specifies the test conditions for the determination of the tensile properties of isotropic and orthotropic fibre-reinforced plastic composites, based upon the general principles given in part 1. Unidirectionally reinforced
30、 materials are covered by part 5. 1.2 See ISO 527-1, subclause 1.2. 1.3 The test method is suitable for use with the following materials: fibre-reinforced thermosetting and thermoplastic composites incorporating non-unidirectional reinforcements such as mats, woven fabrics, woven rovings, chopped st
31、rands, combinations of such reinforcements, hybrids, rovings, short or milled fibres or preimpregnated materials (prepregs) (for directly injection-moulded specimens, see specimen 1A in ISO 527-2:1993); combinations of the above with unidirectional reinforcements and multidirectional reinforced mate
32、rials constructed from unidirectional layers, provided such laminates are symmetrical (for materials with completely, or mainly, unidirectional reinforcements, see ISO 527-5); finished products made from these materials. The reinforcement fibres covered include glass fibres, carbon fibres, aramid fi
33、bres and other similar fibres. 1.4 The method is performed using specimens machined from a test panel made in accordance with ISO 1268 or by equivalent methods, or from finished and semi-finished products with suitable flat areas. 1.5 See ISO 527-1, subclause 1.5. 2 Normative references The followin
34、g standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 527. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 527 are encouraged to investi
35、gate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 527-1:1993, Plastics Determination of tensile properties Part 1: General principles. ISO 527-2:1993, Plastics Determin
36、ation of tensile properties Part 2: Test conditions for moulding and extrusion plastics. ISO 527-5:1997, Plastics Determination of tensile properties Part 5: Test conditions for unidirectional fibre-reinforced plastic composites. ISO 1268:1974, Plastics Preparation of glass fibre reinforced, resin b
37、onded, low-pressure laminated plates or panels for test purposes. ISO 2818:1994, Plastics Preparation of test specimens by machining. ISO 3534-1:1993, Statistics Vocabulary and symbols Part 1: Probability and general statistical terms. 3 Principle See ISO 527-1, clause 3. 4 Definitions For the purpo
38、ses of this part of ISO 527, the following definitions apply. 4.1 gauge length see ISO 527-1, subclause 4.1 4.2 speed of testing see ISO 527-1, subclause 4.2 4.3 tensile stress, (engineering) See ISO 527-1, subclause 4.3, except that for “1”-direction specimens is defined as 1and for“2”-direction sp
39、ecimens as 2(see 4.8 for definitions of these directions). 4.3.1 tensile strength, M see ISO 527-1, subclause 4.3.3, except that Mfor“1”-direction specimens is defined as M1and for“2”-direction specimens as M2 4.4 tensile strain, see ISO 527-1, subclause 4.4, except that for “1”-direction specimens
40、is defined as 1and for“2”-direction specimens as 2 it is expressed as a dimensionless ratio or in percent 4.5 tensile strain at tensile strength; tensile failure strain, M the tensile strain at the point corresponding to the tensile strength of the specimen for “1”-direction specimens, Mis defined a
41、s M1and for “2”-direction specimens as M2 it is expressed as a dimensionless ratio or in percentENISO527-4:1997 2 BSI 09-1999 4.6 modulus of elasticity in tension; Youngs modulus, E see ISO 527-1, subclause 4.6, except that E for “1”-direction specimens is defined as E 1and for “2”-direction specime
42、ns as E 2 the strain values used are as given in ISO 527-1, subclause 4.6, i.e. = 0,0005 and = 0,0025 (seeFigure 1), unless alternative values are given in the material or technical specifications 4.7 poissons ratio, see ISO 527-1, subclause 4.7, except that for “1”-direction specimens bis defined a
43、s 12and has 13 , using the coordinates shown in Figure 2. For“2”-direction specimens, bis defined as 21and has 23 4.8 specimen coordinate axes the “1”-direction is normally defined in terms of a feature associated with the material structure or the production process, such as the length direction in
44、 continuous-sheet processes (see Figure 2). The“2”-direction is perpendicular to the “1”-direction NOTE 1The “1”-direction is also referred to as the 0 or longitudinal direction and the “2”-direction as the 90 or transverse direction. NOTE 2For unidirectional materials covered by part 5 of this Inte
45、rnational Standard, the direction parallel to the fibres is defined as the “1”-direction and the direction perpendicular to the fibres (in the plane of the fibres) as the “2”-direction. 5 Apparatus See ISO 527-1, clause 5, except for the following: The micrometer or its equivalent (see 5.2.1) shall
46、read to 0,01 mm or better. It shall have a suitable-size ball-ended anvil if used on irregular surfaces and a flat anvil if used on flat, smooth (e.g.machined) surfaces. Subclause 5.2.2 does not apply. NOTEIt is recommended that alignment of the specimen and loading train be checked as described in
47、Annex B. 6 Test specimens 6.1 Shape and dimensions Three types of test specimen are specified for use with this part of ISO 527, as detailed and illustrated in Figure 3 (type 1B) and Figure 4 (types 2 and 3). Type 1B is for testing fibre-reinforced thermoplastics. Type 1B specimens may also be used
48、for fibre-reinforced thermosets if they break within the gauge length. Type 1B shall not be used for multidirectional, continuous-fibre-reinforced materials. Type 2 (rectangular without end tabs) and type 3 (rectangular with bonded end tabs) are for testing fibre-reinforced thermosets and thermoplas
49、tics. Specimens with unbonded end tabs are considered as type 2. The preferred width of type 2 and type 3 specimens is 25 mm, but widths of 50 mm or greater may be used if the tensile strength is low due to the particular type of reinforcement used. The thickness of type 2 and type 3 specimens shall be between 2 mm and 10 mm. To decide whether to use type 2 or type 3 specimens, first carry out tests with type 2 specimens a
