1、AECMA STANDARD NORME AECMA AECMA NORM 1 Descriptors: prEN 4408-3 Edition P I June 2002 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION fio Gulledelle 94 - 8-1200 Brussels - Tel. + 32 2 775 81 10 - Fax. + 32 2 775 81 11 - www.aecma-stan.org ICs: ENGLISH VERSION Aerospa
2、ce series Technical d raw n g s Representation of parts made of composite materials Part 3: Parts including core materials Srie arospatiale Dessins techniques Reprsentation des articles en matriaux composites Partie 3 : Articles intgrant des matriaux dme Luft- und Raumfahrt Technische Zeichnungen Da
3、rstellung von Teilen aus Verbundwerkstoffen Teil 3: Teile mit Kernwerkctoffen This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA-STAN (The European Association of Aerospace Industries - Standardization). It is published on green paper for the needs of the Europea
4、n Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without
5、 re-identification of the standard. After examination and review by users and formal agreement of AECMA-STAN it will be submitted as a draf? European Standard to CEN (European Committee for Standardization) for formal vote. I Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199. ru
6、e Jean-Jacques Rousseau - 921 38 ISSY-LES-MOULINEAUX CEDEX Procedure and Process Domain 1 Edition approved for publication I Comments should be sent within six months after the date of publication to 28 June 2002 AECMA-STAN Gulledelle 94 8-1200 BRUXELLES Copyright 2002 O by AECMA-STi Copyright Assoc
7、iation Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 2 prEN 4408-3: 2002 Foreword This standard has been prepared by former AECMA-CN CO and was reviewed by the Domain
8、 Technical Coordinator of AECMA-STANS Process Domain. Contents Page 1 2 3 4 4.1 4.1.1 4.1.2 4.2 4.2.1 4.2.2 4.2.3 4.2.4 4.3 5 5.1 5.2 Annex A . 3 Normative references 3 Terms and definitions. 3 . . Drawings representation . General representation . Identification of core material layers Representati
9、on of core material layers . Specific representations _ . 5 5 5 6 6 6 7 8 9 9 Recommended symbols in the lay-up diagram . 9 Dimensions of recommended symbols . 1 O Example of a laminate representation and lay-up diagram . 11 (informative) Bibliography . . . . 13 Copyright Association Europeene des C
10、onstructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 3 prEN 4408-3: 2002 I Scope This standard specifies the rules for the representation of parts including core materials as well as the i
11、nformation to be indicated in technical drawings. It applies to aerospace structures using core materiais. It shall be used together with EN 4408-1. 2 Norm at ive references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative referen
12、ces are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the la
13、test edition of the publication referred to applies. EN 4408-1 Aerospace series - Technical drawings - Representation of parts made of composite materials - Part 1 : General rules 1) Aerospace series - Technical drawings - Representation of parts made of composite materials - Part 2: Laminated parts
14、 1) EN 4408-2 3 Terms and definitions For the purposes of this standard the terms and definitions given in EN 4408-1 and the followings apply : 3.1 alveolar material semi-finished product made of partly bonded or welded ribbons (before or after forming) to form geometrically identical patterns (see
15、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) W i Welding or bonding NOTE A set of cells makes up the alveolar material Figure 1 1) Published as AECMA Prestandard at the date of publication of this sta
16、ndard Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 4 prEN 4408-3: 2002 Key 1 Alveolar material side 2 Tape joining plane 3 Direction L (of tape
17、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
18、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 3.7 honeycomb alveolar material with hexagonal cells Copyright Association Europeene des Constructeurs de Ma
19、teriel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 5 prEN 4408-3: 2002 3.8 L direction direction of the tape also called tape direction (see figure 1 and figure 2) 3.9 pe rfo rat e d a I veo I a r m at e
20、ri a I 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 3.1 O side of a cell (H) the sides of cells are defined by their walls; the height of the sides corresponds to the width of the honey
21、comb material tape 3.1 1 tape designates each ribbon which makes up the alveolar material 3.1 2 W direction direction perpendicular to the direction of the tape (L) in the plane (or face) of the alveolar material 4 Drawings representation The general rules for the representation of parts including c
22、ore material are specified in EN 4408-1, A general representation of parts including core material is given in 4.1. If the alveolar material is drainded, perforated, contains filling areas or inserts, this general representation shall be completed by figures as specified in 4.2. 4. I General represe
23、ntation 4.1 .I Each honeycomb or foam layer shall be identified. Identification of core material layers Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,
24、-Page 6 prEN 4408-3: 2002 Example for the identification by a 3-figure number, beginning at O1 1 (see figure 5) * I I 013/ Key O1 I alveolar material 118 O1 2 alveolar material 114 O1 3 alveolar material 118 NOTE ( O1 1 ) and ( 013 ) are made of the same alveolar material but their contour is differ
25、ent. Figure 5 4.1.2 On the view projected perperdiculary on to the sandwich panel plane, the different areas of the material are limited by fine interrupted lines. Alveolar material is represented by lines which are perpendicular to the panel plane (see figure 6). Representation of core material lay
26、ers Figure 6 -Alveolar material, cross section Foam is represented by circles (see figure 7). Figure 7 - Foam, cross section 4.2 Specific representations 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 s
27、hall be enlargened and the draining notches shall be represented by two parallel lines which cross the sides of the drained cells (see figure 8 and figure 9) in a view which is parallel to the panel plane. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS unde
28、r license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 7 prEN 4408-3: 2002 II II Figure 8 - Alveolar material, drained on 2 sides Figure 9 -Alveolar material, drained on 4 sides Drajning is represented by a symbolisation of the notches on the rele
29、vant side of each cell (see figure 10 and figure 11) in a cross-sectional view. Figure 10 - Alveolar material, cross section drained on 1 side Figure I I - 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
30、if the draining direction has to be specified, some cells shall be enlargened 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. Figure 12 -Alveolar material, perfored on
31、2 sides Figure 13 - Alveolar material, perfored on 4 sides Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-T Page 8 prEN 4408-3: 2002 Perforations are
32、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 the filling pr
33、ocess, 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 the edging,
34、 - alveolar material joinings (see figure 16). I NOTE NOTE Filling per product . to document . Figure 15 I I I wlllllll I I I Key 1 2 3 Bordering filling Alveoar material joining Filling of whole cell Figure 16 Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS
35、 under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 9 prEN 4408-3: 2002 4.2.4 Inserts As the inserts are located in those areas of the alveolar material the cells of which are filled, only the filling is indicated and reference is made to
36、a cross section to allow for correct visualisation of the location (see figure 17). Inserts are represented by their geometry within the cross section. Key 1 Densification foam 2 Bonding material Figure 17 4.3 Representation in lay-up diagram Each constituing element of a part including core materia
37、l 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 I SYMBOL I COMMENTS NON DRAINED AND NON PERFORED ALVEOLAR MATERIAL The length of the rectangle corresponds to the tape direction ALVEOLAR MATERI
38、AL DRAINED ON 1 SIDE The curve side corresponds to the drained side ALVEOLAR MATERIAL DRAINED ON 2 SIDES PERFORED ALVEOLAR MATERIAL lol FOAM El Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networkin
39、g permitted without license from IHS-,-,-Page 10 prEN 4408-3: 2002 5.1 Dimensions of recommended symbols See figure 18 and table 2. R r EF Figure 18 Table 2 - Recommended values Format A4, A3, A2 AI, AO, X Dimension 0,7 I I Line width L 5 7 5 l4 Copyright Association Europeene des Constructeurs de M
40、ateriel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 11 prEN 4408-3: 2002 5.2 See figure 19 and figure 20. Example of a laminate representation and lay-up diagram - I I I I I I I I I 1- - A3 I I 1 I I I I
41、t- - I 4. 90“ It O“ I - 90“ Figure 19 Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 12 prEN 4408-3: 2002 Dimensions in millimetres - 45“ O“ - -
42、0,33 0,33 0,15 - - 126 Q 1 121 I 116 I 014 90“ 15 1 013 -45“ 15 1 012 O“ 15 Q I o11 u Q 1 111 -i- x - q- 45“ I 0,33 J Lu O A2 I A3 I A4 Aera thickness WARP O“ + Key Q 0 o 0 Epoxy resin glass fibre, bidirectional impregnated Carried glue film to document . 118 alveolar material aluminium to document
43、.,. 1/4 alveolar material aluminium to document . Figure 20 Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 13 prEN 4408-3: 2002 Annex A (informat
44、ive) Bibliography EN 4408-1 Aerospace series - Technical drawings - Representation of parts made of composite materials - Part 1: General rules EN 4408-2 EN 4408-4 Aerospace series - Technical drawings - Representation of parts made of composite materials - Part 2: Laminated parts Aerospace series -
45、 Technical drawings - Representation of parts made of composite materials - Part 4: Items obtained by winding Aerospace series - Technical drawings - Representation of parts made of composite materials - Part 5: Seams EN 4408-5 EN 4408-6 Aerospace series - Technical drawings - Representation of parts made of composite materials - Part 6: Preforms Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
