1、BRITISH STANDARD AEROSPACE SERIESBS EN 4408-2:2005Technical drawings Representation of parts made of composite materials Part 2: Laminated partsThe European Standard EN 4408-2:2005 has the status of a British StandardICS 01.100.99; 49.020g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g4
2、4g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 4408-2:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2005 BSI 31 October 2005ISBN
3、 0 580 46482 2National forewordThis British Standard is the official English language version of EN 4408-2:2005. 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/-/64, Struc
4、tural 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 found in th
5、e 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 responsible f
6、or 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 UK interes
7、ts 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 16, an inside back cover and a back cover.The BSI copyright notice displayed in this document
8、 indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 4408-002May 2005ICS 01.100.99; 49.020English versionAerospace series - Technical drawings - Representation of partsmade of composite materials - Par
9、t 2: Laminated partsSrie arospatiale - Dessins techniques - Reprsentationdes articles en matriaux composites - Partie 2 : ArticlesdrapsLuft- und Raumfahrt - Technische Zeichnungen -Darstellung von Teilen aus Verbundwerkstoffen - Teil 2:SchichtstoffteileThis European Standard was approved by CEN on 1
10、5 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 concerning such nationalstandards may be obt
11、ained 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 language and notified to the Central Secre
12、tariat 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, Netherlands, Norway, Poland, Portug
13、al, 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 form and by any means reservedworld
14、wide for CEN national Members.Ref. No. EN 4408-002:2005: E2 Contents Page Foreword 3 1 Scope .4 2 Normative references .4 3 Terms and definitions.4 4 General rules.4 5 Specific rules.4 5.1 Content of definition.4 5.2 Recommended workplan4 5.3 Laminate representation.5 5.4 Analysis of the content of
15、the laminate representation .8 5.4.1 Layer identification .8 5.4.2 Connection of plies and dimensions.9 5.4.3 Definition of laminate areas .12 5.4.4 Symbols.13 Bibliography.16 EN 4408-2:20053 Foreword This document (EN 4408-002:2005) has been prepared by the European Association of Aerospace Manufac
16、turers - Standardization (AECMA-STAN). After enquiries and votes carried out in accordance with the rules of this Association, 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 Europ
17、ean 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 conflicting national standards shall be withdrawn at the latest by November 2005. Attention is drawn to the possibility that some of the el
18、ements 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 to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this
19、European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 44
20、08-2:20054 1 Scope This standard specifies the rules for the representation of laminated parts as well as the information to be indicated in technical drawings. It applies to aerospace structures using laminated parts. It shall be used together with EN 4408-001. 2 Normative references The following
21、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. EN 4408-001, Aerospace series Technical drawings Representation
22、 of parts made of composite materials Part 1: General rules. 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 4408-001 apply. 4 General rules The general rules for the representation of parts made of composite material are specified in standard EN 4408
23、-001. 5 Specific rules The representation of laminated parts basically differs from the others parts by the detailed representation of the different layers which make up the part. 5.1 Content of definition The definition of a part includes: the list of the elements which make up the part; the notes
24、and definition of the materials; the definition of the laminate areas; the representation and the lay-up diagram; the direction key(s) for laminating. 5.2 Recommended workplan See Table 1. EN 4408-2:20055 Table 1 Work order Observations Subclause 1 Show laminate representation 5.3 5.4.1 and 5.4.2 2
25、Define direction keys EN 4408-001 3 Define laminate areas 5.4.3 4 Fill in lay-up diagram 5.4.4.2 and EN 4408-0015 Make drawing of the definition of the part This drawing can be done before or during laminate representationEN 4408-001 5.3 Laminate representation This representation, specifying the de
26、tails of the layers making up the part and their individual identification, may be: a detailed view; a cross section; a perspective; . The part is represented in an unmachined state. For the representation of a section, see Figure 1. Each layer is represented by a continuous thick line which marks t
27、he middle line of the layer. The extremities of each layer are represented by a point, while keeping the drawing readable. No point shall be at direction changes or at intersections. To avoid any reprography or microfilming problem, the minimum distance between two consecutive lines shall not be les
28、s than 0,8 mm or twice the line width (refer to the values in the table). A complete representation at a more representative scale shall be considered to improve the readability of the drawing, especially in areas with sudden changes in profile or connection, EN 4408-2:20056 a The laminate represent
29、ation does not define the ply or layer dimensions. Figure 1 EN 4408-2:20057 For a detailed view, see Figure 2. Figure 2 EN 4408-2:20058 5.4 Analysis of the content of the laminate representation 5.4.1 Layer identification Layers are identified by a number. Identification of a section (see Figures 3
30、and 4). Identification is achieved by 3-figure numbers increasing 5 by 5 and beginning at 101. This identification method allows to interpose a layer without modifying the other identifications. Generally the identification is marked at the extremity of the ply by a fine line which is interrupted be
31、fore the designated ply (see Figure 3). Figure 3 If the identification cannot be placed at the extremity of the ply, it shall conform to Figure 4. Figure 4 NOTE If a layer is modified (cutting, material, direction), its number can be deleted from the drawing of the laminate and be renumbered. The li
32、ne in the lay-up diagram corresponding to the old number can be left blank. For a detailed view, see Figure 5. 101101EN 4408-2:20059 Key 1 Actual cutting (non-used) 2 Simplified cutting 3 Layer no. 32 4 Layer no. 1 5 Tool 6 Bottom of slope 7 Thick line 8 Fine dot-and-dash line Figure 5 5.4.2 Connect
33、ion of plies and dimensions 5.4.2.1 Connection of plies The connection of plies shall be specified in the definition: Example of a section (see Table 2) EN 4408-2:200510 Table 2 OVERLAPPING REPRESENTATIONS OBSERVATIONS L A note shall specify the dimension “a“ of the overlapping (s) NOTE For each ply
34、: MANDATORY L The overlapping is represented and identified as a ply. ALLOWABLE NOTE Overlapped area and/or with edge to edge cutting allowable The localisation of overlapped areas and/or with allowable edge to edge cutting shall be indicated in the laminate areas by notes. L : Value to be defined b
35、y the designer EDGE TO EDGE REPRESENTATIONS OBSERVATIONS MANDATORY ALLOWABLE NOTE Overlapped area and/or with edge to edge cutting allowable The localisation of overlapped areas and/or with allowable edge to edge cutting shall be indicated in the laminate areas by notes. A2 NOTEA1 A2 NOTEA1 A2A1 A3A
36、1 A2 NOTEa = . mmEN 4408-2:200511 5.4.2.2 Recommended dimensions Overlapping dimensions less than or equal to l (see Figure 6 and Table 3) Figure 6 Table 3 Format Dimension A4, A3, A2 mm A1, A0, X mm l 5 7Width e 1 1,5 d 2 4 Dimensions for edge to edge connection (see Figure 7 and Table 4) Key 1 poi
37、nt 2 Motif width NOTE Minimum values for width of lines and point diameter, d, i are given in Table 4. Figure 7 Table 4 Format Dimension A4, A3, A2 mm A1, A0, X mm d 5 7Width e 0,5 0,7 Point 1 2 i 1,5 3Motif width 0,8 1,5 EN 4408-2:200512 5.4.3 Definition of laminate areas The areas are identified b
38、y a letter followed by a number; for example : A1, A2, A3, On a cross section, areas dimensioning lines are dimension lines which finish at the extremity of each area in the form of points (see Figure 8). In areas with varying thicknesses, a note has to be added (see Figure 9). Figure 8 NOTE STAIRLI
39、KE ARRANGEMENT OF LAYER WITH X = . mm Figure 9 NOTE Two areas having: the same total number of layers the same number of layers in each direction, but in an order of different stacking or different number of layers in each direction have two different reference marks“. EN 4408-2:200513 5.4.4 Symbols
40、 See Table 5. Table 5 DESIGNATIONS SYMBOLS FINE WEB aWEB, FILAMENTARY ROVING FABRIC, WARP SIDE bFABRIC, WEFT SIDE bBALANCED FABRIC OR SIDE IRRELEVANT BALANCED MULTILAYER INDICATES THAT DIRECTION IS IRRELEVANT STRUCTURAL ADHESIVE REPRESENTS ALL UNDEFINED LAYERS MOTIF aNon-woven, of fine thickness bWa
41、rp side: side directed towards the positive areas of the direction key NOTE All combinations can be considered. EN 4408-2:200514 5.4.4.1 Dimensions of symbols See Figure 10 and Table 6. Figure 10 Table 6 Recommended values Format Dimension A4, A3, A2 mm A1, A0, X mm Line width 0,5 0,7 L 5 7 H 3 5 d1
42、 4 6 d 1 1,5 EN 4408-2:200515 5.4.4.2 Example of a lay-up diagram See Figure 11. Dimensions in millimetres 2231 0 0,1 2226 90 0,1 2221 0 0,1 2216 90 0,1 2211 0 0,1 2206 90 0,1 2201 0 0,1 2196 90 0,1 3191 0,15 1186 45 0,33 1181 45 0,33 4Stairlike arrangement of plies with: 1176 45 0,33 1171 45 0,33 1
43、166 45 0,33 1161 45 0,33 1156 45 0,33 1151 45 0,33 1146 45 0,33 1141 45 0,33 1136 0 0,33 1131 45 0,33 1126 90 0,33 1121 0 0,33 1116 90 0,33 1111 45 0,33 1106 0 0,33 1101 45 0,33 A1 A2 A3 A4 A5 AREA THICKNESS NOTE LAYER IDENTIFICATION DIRECTION THICKNESS 5,94 2,97 3,92 0 Key 1Bidirectional polyimide
44、carbon/resin fabric 2Bidirectional E glass/epoxy resin fabric 3Redux 322 adhesive NOTE This lay-up diagram corresponds to the cross section in Figure 1. Figure 11 x = 1 mm EN 4408-2:200516 Bibliography 1 EN 4408-003, Aerospace series Technical drawings Representation of parts made of composite mater
45、ials Part 3: Parts including core materials. 2 EN 4408-004, Aerospace series Technical drawings Representation of parts made of composite materials Part 4: Items obtained by winding. 3 EN 4408-005, Aerospace series Technical drawings Representation of parts made of composite materials Part 5: Seams.
46、 4 EN 4408-006, Aerospace series Technical drawings Representation of parts made of composite materials Part 6: Preforms. EN 4408-2:2005blankBS EN 4408-2:2005BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British S
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