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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN ISO 10618:2000 The
2、European Standard EN ISO 10618:1999 has the status of a British Standard ICS 59.100.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Carbon fibre Determination of tensile properties of resin-impregnated yarns Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:31:55 GM
3、T+00:00 2006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 April 2000 BSI 04-2000 ISBN 0 580 32894 5 BS EN ISO 1
4、0618:2000 Amendments issued since publication Amd. No.DateComments National foreword This British Standard is the official English language version of EN ISO 10618:1999. It is identical with ISO 10618:1999. The UK participation in its preparation was entrusted to Technical Committee PRI/42, Fibre re
5、inforced thermosetting plastics and prepregs, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related internati
6、onal and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references t
7、o international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find fa
8、cility 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 their correct application. Compliance with a British Standard does not of itself confer immunity from legal obli
9、gations. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO forword page, the ISO title page, pages ii to iii, a blank page, pages 1 to 16, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicat
10、es when the document was last issued. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:31:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10618 August 1999 ICS 59.100.00 English version Carbon fibre - Determination of tensile properties
11、 of resin- impregnated yarns (ISO 10618:1999) Fibres de carbone - Dtermination des proprits en traction sur fils imprgns de rsine (ISO 10618:1999) Kohlenstoffasern - Bestimmung des Zugverhaltens eines harzimprgnierten Garnes (ISO 10618:1999) This European Standard was approved by CEN on 2 July 1999.
12、 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 such national standards may be obtained on
13、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 language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat
14、has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMM
15、ITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Central Secretariat: rue de Stassart, 36 B-1050 Brussels 1999 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10618:1999 E Licensed Copy: sh
16、effieldun sheffieldun, na, Sun Nov 19 13:31:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Foreword The text of the International Standard ISO 10618:1999 has been prepared by Technical Committee ISO/TC 61 “Plastics“ in collaboration with Technical Committee CEN/TC 249 “Plastics“, the secretariat of w
17、hich is held by IBN. 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 February 2000, and conflicting national standards shall be withdrawn at the latest by February 2000. According to the CEN/CENEL
18、EC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Swit
19、zerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 10618:1999 was approved by CEN as a European Standard without any modification. NOTE: Normative references to International Standards are listed in annex ZA (normative). EN ISO 10618:1999 Licensed Copy: she
20、ffieldun sheffieldun, na, Sun Nov 19 13:31:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI A Reference number ISO 10618:1999(E) INTERNATIONAL STANDARD ISO 10618 First edition 1999-08-01 Carbon fibre Determination of tensile properties of resin-impregnated yarn Fibres de carbone Dtermination des propri
21、ts en traction sur fils imprgns de rsine EN ISO 10618:1999 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:31:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii Contents 1 Scope1 2 Normative references1 3 Terms and definitions .1 4 Symbols2 5 Principle2 6 Apparatus and materials.2 7 Test spe
22、cimens3 8 Atmosphere for conditioning and testing.5 9 Procedure.5 10 Expression of results 5 11 Precision.8 12 Test report8 Annex A (informative) Examples of heat-curable expoxy-resin systems9 Annex B (informative) Examples of impregnating apparatus.10 Annex C (informative) Examples of tabs and tab-
23、preparation apparatus .11 Annex D (informative) Examples of extensometers.13 EN ISO 10618:1999 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:31:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of
24、 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 technical committee has been established has the right to be represented on that committee. Int
25、ernational 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 of electrotechnical standardization. International Standards are drafted in accordance with t
26、he rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard
27、ISO 10618 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 13, Composites and reinforcement fibres. Annexes A to D of this International Standard are for information only. EN ISO 10618:1999 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:31:55 GMT+00:00 2006, Uncont
28、rolled Copy, (c) BSI EN ISO 10618:1999 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:31:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 1 Carbon fibre Determination of tensile properties of resin-impregnated yarn 1 Scope This International Standard specifies a method of test for the determ
29、ination of the tensile strength, tensile modulus of elasticity and strain at maximum load of a resin-impregnated yarn specimen. The method is applicable to yarns (continuous and staple-fibre yarns) of carbon fibre for use as reinforcements in composite materials. The tensile modulus of elasticity ma
30、y be calculated by one of two methods, A and B. The result obtained will not necessarily be the same in each case. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated refere
31、nces, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated refe
32、rences, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 291:1997, Plastics Standard atmospheres for conditioning and testing. ISO 527-1:1993, Plastics Determination of tensile properties Part
33、1: General principles. ISO 1886:1990, Reinforcement fibres Sampling plans applicable to received batches. ISO 1889:1997, Reinforcement yarns Determination of linear density. ISO 10119:1), Carbon fibre Determination of density. ISO 10548:1994, Carbon fibre Determination of size content. 3 Terms and d
34、efinitions For the purposes of this International Standard, the terms and definitions given in ISO 527-1 apply, with the following addition: 3.1 cross-sectional area of a yarn Af the linear density of a yarn divided by the density of the material in the yarn NOTE It is expressed in square metres. 1)
35、 To be published. (Revision of ISO 10119:1992) EN ISO 10618:1999 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:31:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 4 Symbols The symbols used in this International Standard are as follows: sftensile strength, in megapascals; Ffmaximum tensil
36、e force, in newtons; Afcross-sectional area of yarn, in square metres; rfdensity of yarn, in kilograms per cubic metre; Ttflinear density of yarn, in tex; Ttilinear density of impregnated yarn, in tex; Eftensile modulus of elasticity, in gigapascals; L0extensometer gauge length, in millimetres; Luex
37、tensometer reading, in millimetres, at maximum load; DLvariation in the length, in millimetres, corresponding to the variation in the force, in newtons; DF variation in the force, in newtons, corresponding to the variation in the length, in millimetres. 5 Principle A sample of yarn is uniformly impr
38、egnated with resin, then cured to provide thin composite rod test specimens. The specimens are loaded in tension at a constant speed by a suitable mechanical-testing machine until failure in order to determine the load-extension curve. The tensile strength, the tensile modulus of elasticity and the
39、strain at maximum load are calculated from the force- extension relationship. The tensile modulus is determined by dividing the variation in the stress by the corresponding variation in the strain between two points. For carbon-fibre yarns, the relation between stress and strain is not linear, hence
40、 a chord modulus must be defined. In method A, the modulus is defined between two stress levels, whereas in method B it is defined between two strain levels. For the purposes of this International Standard, method B is the reference method. The linear density and the size content have to be determin
41、ed independently. NOTE The precision of the values obtained is the same for method A and for method B. Method A, or other methods, may be used for purchase-specification or quality-control purposes by agreement between customer and supplier. 6 Apparatus and materials 6.1 Impregnating resin, compatib
42、le with the yarn and its size. The viscosity of the resin or resin solution shall be such that sufficient resin pick-up is achieved to ensure uniform impregnation. The strain at failure of the cured resin shall be at least twice that of the fibre, preferably three times. In this respect, heat-curabl
43、e epoxy-resin systems with a viscosity during impregnation of preferably less than 1000 mPas are suitable (see annex A for example), as is any formulation capable of giving test specimens that fulfil the requirements of this International Standard. The resin formulation, however, shall be specified
44、in detail and shall be agreed upon between the fibre manufacturer and the user. 6.2 Impregnation apparatus. Test specimens can be prepared by any method which produces a uniformly impregnated, smooth specimen. These methods include both single- and multiple-specimen preparation techniques. A multipl
45、e-specimen impregnation apparatus may consist of the following: EN ISO 10618:1999 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:31:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3 6.2.1 Holder for the yarn-feed bobbin, with yarn-tensioning devices. 6.2.2 Impregnation bath, with temperatur
46、e-control devices and impregnation rollers or yarn-tensioning bars. 6.2.3 Unit to remove excess resin from the impregnated yarn by passing it over rollers covered with fabric, paper or felt and/or through a die. 6.2.4 Frame, to wind up the impregnated yarn, preferably made of wood or metal coated wi
47、th rubber. 6.3 Curing oven, with temperature control. A fan circulation oven is preferred to ensure uniform curing of the resin. The temperature of the curing oven shall be controlled at 3 C. 6.4 Tensile-testing machine, with a constant crosshead speed, equipped with force- and extension-recording d
48、evices. The accuracy of the force indication shall be better than 1 % of the recorded value. The specimen-gripping system shall ensure that the test specimen is aligned with the axis of the test machine. 6.5 Extensometer linked to a continuous-recording device, which automatically records the extens
49、ion within the gauge length of the extensometer as a function of the force acting on the test specimen. The extensometer shall be sufficiently light to induce only negligible stresses in the test specimen. The extensometer gauge length shall be at least 50 mm, but preferably 100 mm. The tolerance on the gauge length shall be 1 %. The extensometer shall have a measurement tolerance of not more than 0,1 % over the required extension- measurement range. Examples of suitable extensometers are given in annex D. Other strain-meas