1、BRITISH STANDARD AEROSPACE SERIESBS EN 4408-4:2005Technical drawings Representation of parts made of composite materials Part 4: Items obtained by windingThe European Standard EN 4408-4:2005 has the status of a British StandardICS 01.100.99; 49.020g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55
2、g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 4408-4:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2005 BSI 31 Octobe
3、r 2005ISBN 0 580 46481 4National forewordThis British Standard is the official English language version of EN 4408-4:2005. The UK participation in its preparation was entrusted by Technical Committee ACE/65, Non-metallic materials for aerospace purposes (excluding textiles), to Subcommittee ACE/65/-
4、/64, Structural reinforced plastics, which has the responsibility to:A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be f
5、ound in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are res
6、ponsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep
7、UK interests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover.The BSI copyright notice displayed in this document indicates wh
8、en the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 4408-004May 2005ICS 01.100.99; 49.020English versionAerospace series - Technical drawings - Representation of partsmade of composite materials - Part 4: Items ob
9、tained by windingSrie arospatiale - Dessins techniques - Reprsentationdes articles en matriaux composites - Partie 4 : Articlesobtenus par enroulementLuft- und Raumfahrt - Technische Zeichnungen -Darstellung von Teilen aus Verbundwerkstoffen - Teil 4: ImWickelverfahren hergestellte TeileThis Europea
10、n Standard was approved by CEN on 15 July 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concernin
11、g such nationalstandards 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 language made by translationunder the responsibility of a CEN member into its own languag
12、e and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
13、Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any
14、form and by any means reservedworldwide for CEN national Members.Ref. No. EN 4408-004:2005: E2 Contents Page Foreword 3 Introduction4 1 Scope .5 2 Normative references .5 3 Terms and definitions.5 4 Presentation on drawings 6 4.1 General rules.6 4.2 Specific rules.6 4.2.1 Symbol.6 4.2.2 Winding of f
15、ilaments.6 4.2.3 Winding of plies 8 Bibliography.9 EN 4408-4:20053 Foreword This document (EN 4408-004:2005) has been prepared by the European Association of Aerospace Manufacturers - Standardization (AECMA-STAN). After enquiries and votes carried out in accordance with the rules of this Association
16、, this Standard has received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement,
17、at the latest by November 2005, and conflicting national standards shall be withdrawn at the latest by November 2005. 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
18、 any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ice
19、land, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 4408-4:20054 Introduction The proposed representations only provide the definition of parts made up of cylinders, i.e. surfaces
20、 created by a straight (generator) line which moves while remaining parallel to a given direction, along a (directing) curve. These representations are insufficient to describe parts especially including truncated cones, cores or elliptic bottoms. This standard is intended: for items obtained by win
21、ding helicoidal filaments of a basic yarn; for items obtained by winding plies (or layers). EN 4408-4:20055 1 Scope This standard specifies the rules for the representation of items in composite materials obtained by winding as well as the information to be indicated in technical drawings. It is app
22、licable to aerospace structures using items in composite materials obtained by winding. It shall be used together with EN 4408-001. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies.
23、For undated references, the latest edition of the referenced document (including any amendments) applies. EN 4408-001, Aerospace series Technical drawings Representation of parts made of composite materials Part 1: General rules. EN 4408-002, Aerospace series Technical drawings Representation of par
24、ts made of composite materials Part 2: Laminated parts. 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 4408-001 and the following apply. 3.1 angle of the spiral angle formed by the basic yarn, or the laid ply, and the 0 direction of the direction key
25、 (this 0 direction corresponds to the direction of the cylinders axis in the case of rotational parts) 3.2 lap set of fibres and/or filaments and/or yarns and/or fibrillated laminates arranged in an orderly manner or not, sufficiently cohesive to ensure easy handling and a slight thickness with resp
26、ect to other dimensions. 3.3 layer in the winding of filaments, the layer is specifically defined as being made up of the smallest whole number of winding motives such that the surface described is entirely covered 3.4 spiral pitch axial advance of the yarn or ply lay device corresponding to a whole
27、 turn of the part 3.5 tape preimpreg fibrous composite supplied in different widths the fibres of which are arranged in an unidirectional manner lengthways 3.6 to-and-fro by winding filaments, elementary figure made up of two spirals of opposite pitches EN 4408-4:20056 A to-and fro corresponds to tw
28、o consecutive “passes“ and in the opposite direction by the yarn laying device. 3.7 lay width distance between two adjacent yarns or laps or plies, measured perpendicularly at their axes 3.8 winding symbol means that the ply in question is obtained by winding 3.9 winding motive figure described by t
29、he smallest whole number of to-and-fro movements such that a symmetry appears with respect to the axis in the winding of the filaments 4 Presentation on drawings 4.1 General rules The general rules for the representation of items in composite materials obtained by winding shall be in conformity with
30、 EN 4408-001. The representation rules described in EN 4408-002 remain applicable for items obtained by winding (stratification table, direction key, symbolisation of direction in the stratification table, etc.). 4.2 Specific rules 4.2.1 Symbol Winding is symbolised in the stratification table by th
31、e symbol . This symbol appears in the stratification table and shall be accompanied by a note defining the basic material used for winding (yarn, rough roving, tape, fabric). 4.2.2 Winding of filaments See Figure 1 and Figure 2. In the case of items obtained by the helicodal filamentary winding of a
32、 basic thread, the drawing does not represent the section of the thread. EN 4408-4:20057 Key 1 Layer end side 136 and 141 (see Figure 2) Figure 1 Dimensions in millimetres 1-3 141 90 0,375 2 ROUGH ROVINGS 1-3 136 90 0,375 2 ROUGH ROVINGS 1 131 90 0,375 2 ROUGH ROVINGS 2 126 45 0,31 2 121 0 0,31 1 11
33、6 V V 261,3261,3V1V1130,63 ROUGH ROVINGS 3 WINDING END1/3NUMBER OF TO-and-FROs = 29 2 111 0 0,31 2 106 0 0,31 1 101 90 0,375 2 ROUGH ROVINGS A1 A2 A3 A4 FABRIC LAP YARN AREA THICKNESS NOTE ELEMENTIDENTIFICATION DIRECTIONTHICKNESS 4,042,80V 0,975 Key = winding V = variable in the area 1 = carbon fibr
34、e 2 = bi-directional fabric V1= see file N XXXXXXX 3 = for layers 136 and 141, make a dead stop once at the stop mark. Figure 2 WARP 0 EN 4408-4:20058 4.2.3 Winding of plies See Figure 3 and Figure 4. In the case of items obtained by winding plies: the drawing differentiates the laid elementary widt
35、hs; the representation rules are similar to those for draped items, provided that certain plies which appear to be distinct on a cross section according to a generator, come in fact from single wound plies. Two cases are to be differentiated: Circumferential or spiral winding; the number of winding
36、turns shall figure: either in a note, or be entirely represented on the drawing, Helical winding: the stratification table indicates as usual the angle of the plys reference direction in relation to the 0 direction of the direction key of the part, and winding is defined on the drawing with respect
37、to its spiral angle, or its spiral pitch, or its lay pitch. It may be useful to mark on the drawing the point at which the spiral starts. NOTE Plies are generally cut out parallel to their reference direction and the spiral angle corresponds to the angle figuring in the stratification table. Dimensi
38、ons in millimetres Figure 3 Dimensions in millimetres 1111 790,3 2106 790,3 1101 790,3 A1 FABRIC LAP AREA THICKNESS WINDING NOTE LAYER IDENTIFICATION DIRECTIONTHICKNESS 1 Figure 4 EN 4408-4:20059 Bibliography 1 EN 4408-003, Aerospace series Technical drawings Representation of parts made of composit
39、e materials Part 3: Parts including core materials. 2 EN 4408-005, Aerospace series Technical drawings Representation of parts made of composite materials Part 5: Seams. 3 EN 4408-006, Aerospace series Technical drawings Representation of parts made of composite materials Part 6: Preforms. EN 4408-4
40、:2005BS EN 4408-4:2005BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.RevisionsBr
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