1、BRITISH STANDARD AEROSPACE SERIES BS EN 4408-3:2005 Technical drawings Representation of parts made of composite materials Part 3: Parts including core materials The European Standard EN 4408-3:2005 has the status of a British Standard ICS 01.100.99; 49.020 BS EN 4408-3:2005 This British Standard wa
2、s published under the authority of the Standards Policy and Strategy Committee on 31 October 2005 BSI 31 October 2005 ISBN 0 580 45848 2 National foreword This British Standard is the official English language version of EN 4408-3:2005. The UK participation in its preparation was entrusted by Techni
3、cal Committee ACE/65, Non-metallic materials for aerospace purposes (excluding textiles), to Subcommittee ACE/65/-/64, Structural reinforced plastics, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on t
4、he interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standa
5、rds which implement international or European publications referred to in this document may be found 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
6、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 from legal obligations. Summary of pages This document comprises a front cover, an inside front
7、 cover, the EN title page, pages 2 to 15 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN4408003 May2005 ICS01.100.99;49.020 E
8、nglishversion AerospaceseriesTechnicaldrawingsRepresentationofparts madeofcompositematerialsPart3:Partsincludingcore materials SriearospatialeDessinstechniquesReprsentation desarticlesenmatriauxcompositesPartie3:Articles intgrantdesmatriauxdme LuftundRaumfahrtTechnischeZeichnungen DarstellungvonTeil
9、enausVerbundwerkstoffenTeil3: TeilemitKernwerkstoffen ThisEuropeanStandardwasapprovedbyCENon15July2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliograp
10、hicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtoth
11、eCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slove
12、nia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2005CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN4408003:2005
13、:EEN 4408-3:2005 2 Contents Page Foreword 3 1 Scope .4 2 Normative references .4 3 Terms and definitions.4 4 Drawings representation 6 4.1 General representation.6 4.1.1 Identification of core material layers .6 4.1.2 Representation of core material layers .7 4.2 Specific representations 8 4.2.1 Dra
14、ined alveolar material8 4.2.2 Perforated alveolar material .8 4.2.3 Filling zones 9 4.2.4 Inserts 10 4.3 Representation in lay-up diagram11 5 Recommended symbols in the lay-up diagram 11 5.1 Dimensions of recommended symbols.12 5.2 Example of a laminate representation and lay-up diagram .13 Bibliogr
15、aphy.15 EN 4408-3:2005 3 Foreword This document (EN 4408-003:2005) 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, this Standard has received the approval
16、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, at the latest by November 2005, and confli
17、cting 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 any or all such patent rights. According
18、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, Iceland, Ireland, Italy, Latvia, Lithuania, L
19、uxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. 4 1 Scope This standard specifies the rules for the representation of parts including core materials as well as the information to be indicated in technical drawings. It ap
20、plies to aerospace structures using core materials. 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. For undated references, the latest e
21、dition 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 parts made of composite materials Part
22、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 alveolar material semi-finished product made of partly bonded or welded ribbons (before or after forming) to form geometrically identical pattern
23、s (see Figure 1 and Figure 2) 3.2 cell basic closed unit of an alveolar, made of two successive tapes after forming ribbons (see Figure 1 and Figure 2) NOTE A set of cells makes up the alveolar material Figure 1 EN 4408-3:20055 Key 1 Alveolar material side 2 Tape joining plane 3 Direction L (of tape
24、s) Figure 2 3.3 core material structure result of the indivisible assembly of two coatings or fine skins on a core which keeps them separate NOTE This structure is also designated by the term sandwich. 3.4 drained alveolar material wall of cells with notches to avoid possible retention of liquid (se
25、e Figure 3) Figure 3 3.5 face surface intended to be in contact with or parallel to the skin (see Figure 1 and Figure 2) 3.6 foam approximately isotropic, flexible or rigid, alveolar material EN 4408-3:20056 3.7 honeycomb alveolar material with hexagonal cells 3.8 L direction direction of the tape a
26、lso called tape direction (see Figure 1 and Figure 2) 3.9 perforated alveolar material alveolar material with cell walls which are perforated to avoid overpressure or depression leading to mechanical stress within the part (see Figure 4) Figure 4 3.10 side of a cell (H) the sides of cells are define
27、d by their walls; the height of the sides corresponds to the width of the honeycomb material tape 3.11 tape designates each ribbon which makes up the alveolar material 3.12 W direction direction perpendicular to the direction of the tape (L) in the plane (or face) of the alveolar material 4 Drawings
28、 representation The general rules for the representation of parts including core material are specified in EN 4408-001. A general representation of parts including core material is given in 4.1. If the alveolar material is drained, perforated, contains filling areas or inserts, this general represen
29、tation shall be completed by figures as specified in 4.2. 4.1 General representation 4.1.1 Identification of core material layers Each honeycomb or foam layer shall be identified. EN 4408-3:20057 Example for the identification by a 3-figure number, beginning at 011 (see Figure 5) Key 011 alveolar ma
30、terial 1/8 012 alveolar material 1/4 013 alveolar material 1/8 NOTE 011 and 013 are made of the same alveolar material but their contour is different. Figure 5 4.1.2 Representation of core material layers On the view projected perpendicularly on to the sandwich panel plane, the different areas of th
31、e material are limited by fine interrupted lines. Alveolar material is represented by lines which are perpendicular to the panel plane (see Figure 6). Figure 6 Alveolar material, cross section Foam is represented by circles (see Figure 7). Figure 7 Foam, cross section EN 4408-3:20058 4.2 Specific re
32、presentations 4.2.1 Drained alveolar material If a layer is made up of drained alveolar material and if the draining direction has to be specified, some cells shall be enlargened and the draining notches shall be represented by two parallel lines which cross the sides of the drained cells (see Figur
33、e 8 and Figure 9) in a view which is parallel to the panel plane. Figure 8 Alveolar material, drained on 2 sides Figure 9 Alveolar material, drained on 4 sides Draining is represented by a symbolisation of the notches on the relevant side of each cell (see Figure 10 and Figure 11) in a cross-section
34、al view. Figure 10 Alveolar material, cross section drained on 1 side Figure 11 Alveolar material, cross section drained on 2 sides 4.2.2 Perforated alveolar material If a layer is made up of perforated alveolar material an if the draining direction has to be specified, some cells shall be enlargene
35、d and the perforations shall be represented by a circle which crosses the sides of the perforated cells (see Figure 12 and Figure 13) in a view which is parallel to the panel plane. EN 4408-3:20059 Figure 12 Alveolar material, perfored on 2 sides Figure 13 Alveolar material, perfored on 4 sides Perf
36、orations are represented by the symbolisation of the circles on the relevant side of each cell (see Figure 14). Figure 14 4.2.3 Filling zones The filling zones of alveolar cells are limited by a fine continuous line and the filling is represented by hatching. For identification of the material and t
37、he filling process, refer to a note (see Figure 15). Fillings of edges are not represented in a plane view. Only the cross section which defines the edging profile indicates the filling. For a cross-sectional representation, these filling zones shall include: filling of the whole cell, filling of th
38、e edging, alveolar material joinings (see Figure 16). EN 4408-3:200510 NOTE Filling per product . to document . Figure 15 Key 1 Bordering filling 2 Alveolar material joining 3 Filling of whole cell Figure 16 4.2.4 Inserts As the inserts are located in those areas of the alveolar material the cells o
39、f which are filled, only the filling is indicated and reference is made to a cross section to allow for correct visualisation of the location (see Figure 17). Inserts are represented by their geometry within the cross section. EN 4408-3:200511 Key 1 Densification foam 2 Bonding material Figure 17 4.
40、3 Representation in lay-up diagram Each constituting element of a part including core material shall occupy one line in the lay-up diagram. 5 Recommended symbols in the lay-up diagram The recommended symbols are given in Table 1. Table 1 DESIGNATION SYMBOL COMMENTS NON DRAINED AND NON PERFORED ALVEO
41、LAR MATERIAL The length of the rectangle corresponds to the tape direction ALVEOLAR MATERIAL DRAINED ON 1 SIDE The curve side corresponds to the drained side ALVEOLAR MATERIAL DRAINED ON 2 SIDES PERFORED ALVEOLAR MATERIAL FOAM EN 4408-3:200512 5.1 Dimensions of recommended symbols See Figure 18 and
42、Table 2. Figure 18 Table 2 Recommended values Format Dimension A4, A3, A2 mm A1, A0, X mm Line width 0,5 0,7 L 5 7 h 3 5 R 3 4 r 1 2 EN 4408-3:200513 5.2 Example of a laminate representation and lay-up diagram See Figure 19 and Figure 20. Figure 19 EN 4408-3:200514 Dimensions in millimetres 1126 45
43、0,33 1121 0 0,33 2116 0,15 3014 90 15 3013 45 1 5 4012 0 15 3011 90 15 2111 0,15 1106 0 0,33 1101 45 0,33 A1 A2 A3 A4 A5 Area thickness NOTE IDENTIFICATION OF LAYERS AND/OR ELEMENTS DIRECTION THICKNESS 1,47 16,62 16,62 16,62 16,62 Key 1Epoxy resin glass fibre, bidirectional impregnated2Carried glue
44、film to document 31/8 alveolar material aluminium to document .41/4 alveolar material aluminium to document .Figure 20 WARP 0 EN 4408-3:200515 Bibliography 1 EN 4408-004, Aerospace series Technical drawings Representation of parts made of composite materials Part 4: Items obtained by winding. 2 EN 4
45、408-005, 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 4408-3:2005BS EN 4408-3:2005 BSI 389 Chiswick High Road London W
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