1、BRITISH STANDARD AEROSPACE SERIES BS 4F 111:2002 (Superseding BS 3F 111:1991) Flax harness webbing for aerospace purposes ICS 49.025.60 BS 4F 111:2002 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee (ACE/-), was published under
2、the authority of the Standards Policy and Strategy Committee on 24 October 2002 BSI 24 October 2002 First published October 1959 Second edition 30 April 1973 Third edition 31 January 1991 Fourth edition 24 October 2002 The following BSI references relate to the work on this standard: Committee refer
3、ence ACE/21 Draft for comment 00/705930 DC ISBN 0 580 38114 5 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee ACE/21, Narrow woven fabrics for aerospace purposes, upon which the following bodies were represented: British
4、Narrow Fabrics Association Ministry of Defence Society of British Aerospace Companies Ltd. Amendments issued since publication Amd. No. Date CommentsBS 4F 111:2002 BSI 24 October 2002 i Contents Page Committees responsible Inside front cover Foreword ii 1S c o p e 1 2 Normative references 1 3 Genera
5、l requirements 1 4Y a r n 1 5 Manufacture 2 6 Finish 2 7 Construction and properties 2 8 Identification 3 Annex A Information to be supplied by the purchaser 4 Table 1 General requirements (given in BS F 100) 1 Bibliography 5BS 4F 111:2002 ii BSI 24 October 2002 Foreword This British Standard, prepa
6、red under the direction of Technical Committee ACE/21, Narrow woven fabrics for aerospace purposes, is one of a series for textiles of a quality suitable for aerospace purposes. It constitutes a revision of BS 3F 111:1991 which is withdrawn. This new edition removes the option to use mineral khaki a
7、nd updates the references in this standard. WARNING NOTES 1) This standard calls for the use of substances and/or test procedures that may be injurious to health if adequate precautions are not taken. It refers only to technical suitability and in no way absolves either the supplier or the user from
8、 statutory obligations relating to health and safety at any stage of manufacture or use. 2) This standard specifies pentachlorophenyl laurate (PCPL) as the only approved rotproofing treatment for aerospace fabrics. Alternative treatments are under development, and this standard will be updated to de
9、lete PCPL as soon as an approved alternative treatment for aerospace fabrics is available. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity
10、 from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 5 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.BS 4F 111:2002 BSI 24 October 2002 1 1 Scope This Bri
11、tish Standard specifies the requirements for flax harness webbing for aerospace purposes. NOTE 1 The information to be supplied by the purchaser in the contract or order is listed in Annex A. NOTE 2 The latest revision of an Aerospace Series standard is indicated by a prefix number. 2 Normative refe
12、rences The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. BS 6F 100:1998, Procedure for inspection a
13、nd testing of textiles for aerospace purposes. 1) BS 2087-1, Preservative textile treatments Part 1: Specification for treatments. BS EN ISO 5084, Textiles Determination of thickness of textiles and textile products. 3 General requirements In addition to the requirements specified in Clause 4, Claus
14、e 5, Clause 6, Clause 7 and Clause 8 of this standard, the requirements and tests given in the latest edition of BS F 100, as specified in Table 1, shall apply. Table 1 General requirements (given in BS F 100) 4 Yarn 4.1 The webbing shall be manufactured from unsized flax yarns of nominal linear den
15、sity as follows: a) warp: 5 ply yarn of resultant linear density 460 tex (R460 tex/5); b) weft: 3 ply yarn of resultant linear density 276 tex (R276 tex/3). NOTE Warp yarn having a mean breaking strength of 150 N and weft yarn having a mean breaking strength of 90 N have been found suitable. 4.2 The
16、 residual alkali solubility shall not exceed 10 % for both warp and weft yarns. 1) The latest edition of this standard should be used. BS 6F 100:1998 is the latest edition at the time of publication. Section of BS F 100 Section title Requirements and tests 1 General All requirements 2 Quality requir
17、ements Requirements for manufacture of narrow fabrics Requirements for dyed textiles except those related to fabric intended for coating Requirements for dimensions and tolerances Requirements for freedom from corrosive impurities (see Section 4 of BS F 100) Requirements for freedom from faults in w
18、oven narrow fabrics 3 Physical tests Test for determination of number of threads per unit length in fabrics Tests for the determination of the mass of narrow fabrics Test for breaking strength and extension under load 4C h e m i c a l tests Test for residual alkali solubility If required by Section
19、2: test for conductivity of aqueous extract test for pH value of aqueous extract test for water soluble chloride test for water soluble sulphateBS 4F 111:2002 2 BSI 24 October 2002 5 Manufacture 5.1 The weave shall be 2/2 V twill. 5.2 Shuttleless constructions shall not be permitted. 6 Finish 6.1 Ge
20、neral 6.1.1 The webbing shall be supplied in one of the following conditions: a) undyed, scoured and rotproofed with pentachlorophenyl laurate (PCPL); or b) dyed and rotproofed with PCPL. NOTE The condition required should be stated in the contract or order (see Annex A). 6.1.2 Where dyed webbing is
21、 required it shall conform to 6.2. 6.1.3 The webbing shall be rotproofed to conform to 6.3. 6.2 Dyeing Where dyeing is required, the colour shall be specified by reference to a British Standard, e.g. BS 381C, or otherwise by pattern. NOTE 1 It is permissible to dye either the webbing or the yarns fr
22、om which it is constructed. NOTE 2 The colour required should be stated in the contract or order (see Annex A). 6.3 Rotproofing The webbing, or the yarns from which it is woven, shall be treated with pentachlorophenyl laurate (PCPL) from aqueous emulsion, conforming to BS 2087-1:Normal process. 7 Co
23、nstruction and properties 7.1 Except as provided in 7.2, the webbing in the finished state shall comply with the following requirements: a) width mm; b) minimum breaking strength 13 500 N; c) mass per unit length, maximum 75 g/m; d) maximum thickness (as measured in accordance with BS EN ISO 5084 un
24、der a pressure of 21 kPa) 2.3 mm; e) ends in width ; f) picks (calculated from the number in a measured length of not less than 20 mm) 44 2 per 100 mm. 45.0 +0 1.5 122 +2 0BS 4F 111:2002 BSI 24 October 2002 3 7.2 Webbings of widths other than 45 mm may be supplied in compliance with this British Sta
25、ndard. In such cases the values of the ends in width and minimum breaking strength shall be proportional to the values specified in 7.1. The maximum thickness and number of picks shall comply with the requirements of 7.1d) and 7.1f). NOTE The requirement for widths other than 45 mm should be stated
26、in the contract or order (see Annex A). 8 Identification The webbing shall be identified by the number of this British Standard 2) , i.e. BS 4F 111:2002 together with the width and, if required, the colour. The identification may be codified. For example, 45 mm wide webbing required dyed Oxford blue
27、 may be identified as “BS 4F 111/45 mm/BS 381C No. 105”. 2) Marking BS 4F 111:2002 on or in relation to a product represents a manufacturers declaration of conformity, i.e. a claim by or on behalf of the manufacturer that the product meets the requirements of the standard. The accuracy of the claim
28、is therefore solely the responsibility of the person making the claim. Such a declaration is not to be confused with third party certification of conformity.BS 4F 111:2002 4 BSI 24 October 2002 Annex A Information to be supplied by the purchaser The purchaser should state in his contract or order: a
29、) the number of this British Standard (i.e. BS 4F 111); b) the condition required (see 6.1.1); c) the colour, if required dyed (see 6.2); d) the width, if other than 45 mm (see 7.2).BS 4F 111:2002 BSI 24 October 2002 5 Bibliography BS 381C, Specification for colours for identification, coding and sp
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