1、prEN 4408-4 AECMA STANDARD NORME AECMA Edition P 1 AECMA NORM June 2002 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION h! Gulledelle 94 - B-1200 Brussels - Tel. + 32 2 775 8110 - Fax. + 32 2 775 81 11 - www.aecma-stan.org ICs: Comments should be sent within six month
2、s after the date of publication to Gulledelle 94 AECMA-STAN 8-1200 BRUXELLES ENGLISH VERSION Procedure and Process Domain Aerospace series Techn cal draw in gs Representation of parts made of composite materials Part 4: Items obtained by winding Srie arospatiale Luft- und Raumfahrt Dessins technique
3、s Technische Zeichnungen en matriaux composites aus Verbundwerkstoffen Reprsentation des articles Partie 4 : Articles obtenus par enroulement Darstellung von Teilen Teil 4: Im Wickelverfahren hergestellte Teile This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA-S
4、TAN (The European Association of Aerospace Industries - Standardization). It is published on green paper for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestand
5、ard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of AECMA-STAN it will be submitted as a draft European Standard to CEN (
6、European Committee for Standardization) for formal vote. I Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau - 92138 ISSY-LES-MOULINEAUX CEDEX Edition approved for publication 28June2002 Page 2 prEN 4408-4: 2002 Foreword This standard has been prepared
7、 by former AECMA-CN CO and was reviewed by the Domain Technical Coordinator of AECMA-STANS Process Domain. Contents O 1 2 3 4 4.1 4.2 4.2.1 4.2.2 4.2.3 Annex A Page Introduction . 3 Terms and definitions . . ._.,. 4 Page 3 prEN 4408-4: 2002 O Introduction The proposed representations only provide th
8、e definition of parts made up of cylinders, .e. surfaces 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 botto
9、ms. This standard is intended: - for items obtained by winding helicoidal filaments of a basic yarn; - for items obtained by winding plies (or layers). 1 Scope This standard specifies the rules for the representation of items in composite materials obtained by winding as well as the informations to
10、be indicated in technical drawings. It is applicable to aerospace structures using items in composite materials obtained by winding. It shall be used together with EN 4408-1. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications.
11、 These normative references 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 u
12、ndated references the latest 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) EN 4408-2 Aerospace series - Technical drawings - Representation of parts made of composite m
13、aterials - Part 2: Laminated parts 1) 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 angle of the spiral angle formed by the basic yarn, or the laid ply, and the O“ direction of the direction key (this O“ directio
14、n 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 respect to other dime
15、nsions. 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. 1) Published as AECMA Prestandard at the date of publication of this standard Page 4 prEN 4408-4: 200
16、2 3.4 spiral pitch axial advance of the yarn or ply lay device corresponding to a whole 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 ma
17、de up of two spirals of opposite pitches A to-and fro corresponds to two 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 q
18、uestion is obtained by winding 3.9 winding motive figure described by the 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
19、 in composite materials obtained by winding shall be in conformity with EN 4408-1. The representation rules described in EN 4408-2 remain applicable for items obtained by winding (stratification table, direction key, symbolisation of direction in the stratification table, etc.). I 1 4.2 Specific rul
20、es 4.2.1 Symbol Winding is symbolised in the stratification table by the 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). Page 5 prEN 4408-4: 2002 4.2.2 Winding of filaments Se
21、e figure 1 and figure 2. In the case of items obtained by the helicodal filamentary winding of a basic thread, the drawing does not represent the section of the thread. Key 1 Layer end side 136 and 141 (see figure 2) Figure I Dimensions in millimetres Key = v= I= 2= v1 = 3= A-A Al A2 A3 A4 I AREA TH
22、ICKNESS WARP 0 winding variable in the area carbon fibre bi-directional fabric see file No XXXXXXX for layers 136 and 141, make a dead stop once at the stop mark. Figure 2 Page 6 prEN 4408-4: 2002 925 +I - 4.2.3 Winding of plies See figure 3 and figure 4. Q Q c O z In the case of items obtained by w
23、inding plies: - the drawing differentiates the laid elementary widths; - 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. - Circumferential or spi
24、ral winding; the number of winding turns shall figure: Two cases are to be differentiated: . either in a note, or . be efitire!y represented on ?he drawing, - Helical winding: the stratification table indicates as usual the angle of the plys reference direction in relation to the O“ direction of the
25、 direction key of the part, and winding is defined on the drawing with respect 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. 111 -79 106 -79 101 -79 z i- U 0 z 5 0 c 0 0 c w Y O E Q, NOTE the angle figuring i
26、n the stratification table. Plies are generally cut out parallel to their reference direction and the spiral angle corresponds to Dimensions in millimetres A T Figure 3 Dimensions in millimetres v) i- x I c z = AREA THICKNESS Figure 4 Page 7 prEN 4408-4: 2002 Annex A (informative) Bibliography EN 44
27、08-1 EN 4408-2 EN 4408-3 EN 4408-5 Aerospace series - Technical drawings - Representation of parts made of composite materials - Part 1 : General rules Aerospace series - Technical drawings - Representation of parts made of composite materials - Part 2: Laminated parts Aerospace series - Technical d
28、rawings - Representation of parts made of composite materials - Part 3: Parts including core materials Aerospace series - Technical drawings - Representation of parts made of composite materials - Part 5: Seams EN 4408-6 Aerospace series - Technical drawings - Representation of parts made of composite materials - Part 6: Preforms
