ASD-STAN PREN 3074-2003 Aerospace Series Drawing Annotation for Composite Laminate Structure (Edition P 2 Replaced by PREN 4408-2)《航空航天系列 复合材料层压板结构用图纸注释 第P2版 替代为PREN 4408-2》.pdf
《ASD-STAN PREN 3074-2003 Aerospace Series Drawing Annotation for Composite Laminate Structure (Edition P 2 Replaced by PREN 4408-2)《航空航天系列 复合材料层压板结构用图纸注释 第P2版 替代为PREN 4408-2》.pdf》由会员分享,可在线阅读,更多相关《ASD-STAN PREN 3074-2003 Aerospace Series Drawing Annotation for Composite Laminate Structure (Edition P 2 Replaced by PREN 4408-2)《航空航天系列 复合材料层压板结构用图纸注释 第P2版 替代为PREN 4408-2》.pdf(15页珍藏版)》请在麦多课文档分享上搜索。
1、AECMA STANDARD NORME AECMA AECMA NORM prEN 3074 Edition P 2 August 2003 ICs: Descriptors: ENGLISH VERSION Aerospace series Drawing annotation for composite laminate structure Supersedes issue P 1 February 1991 Srie arospatiale Indications a porter sur les dessins pour les lments composites obtenus p
2、ar drapage Luft- und Raumfahrt Zeichnungsangaben fr Verbundwerkstoff-Laminatstrukturen following member comments. content shall not be changed to an extent that interchangeabill tionally, without re-identification of the standard. CEN national members have then to implement the standards con Replace
3、 page 1 of the previous issue by this page Wlthdrawal approved I Comments should be sent within six months I Engineering Procedures Domain 31 August 2003 after the date of publication to Gulledelle 94 AECMA-STAN B-I 200 BRUXELLES Copytight 2003 O by AECMA-STAb ICEN PREN*3074 93 3404589 O033670 4 1 p
4、rEN 3074 page 2 Contents Scope and field of application ._ Terminology Drawing annot at ion Annex A a a CEN PREN*307Li 71 3YOLi589 0013671 b W prEN 3074 page 3 1.0 SCOPE AMI FIR-O OF APPLICATION The purpose of this standard is to specify the drawing annotation for composite laminate structure, inten
5、ded for aerospace construction. 2.0 TERMINOLOGY BALANCEO PLIES The same quantity and orientation of plies equally distributed about the neutral axis. BROAOGOOOS Unidirectional fibre pre-preg as supplied in various widths greater than 300mm wide (commonly 1.2m wide). CO-BONO A method of creating asse
6、mblies whereby uncured components are simultaneously cured and bonded with an adhesive to previously cured components in a single operation. CO-CURE A method of creating assemblies whereby components are cured together with, orwithout, an adhesive in a single opera tion. COMPOSITE COMPONENT an assem
7、bly. A cullection of cured plies forming a part, or part of L AMINATE Two or more plies cured together. LAY-UP The operations carried out in laying the plies in sequence on the tool face. LAY-UP DATUM LAY-UP DIAGRAM A diagram showing the direction of the fibres. A table showing the design requiremen
8、ts relative to the operation number, ply identification, orientation, lay-up sequence and stagger index. LAY-UP SEQUENCE the tool face. The order of lay-up of each ply commencing at NEUTRAL AXIS (NA) is a line through the centre of thickness of a component and hence may not be straight. NOMINAL LAMI
9、NATE THICKNESS boundary. The nominal laminate thickness quoted by the suppliers multiplied by the number of plies within a given OPERATION No An operation number is given to the lay-up of one thickness of fibre. The numbers are sequential from the tool face. There may be several pfies in a single op
10、eration. The same ply can be used for several different operation numbers. CEN PLY PLY OROPOFF PLY ORIENTATION PLY PART No. PLY STAGGER START POINT PLY STAGGER INDEX PREDICTED LAMINATE THICKNESS P R E- PR EG SYMMETRY TAPE TOOL FACE UNBALANCE0 PLIES I PREN*3074 93 m 3404589 O033672 8 m I prEN 3074 pa
11、ge 4 One thickness of composite material of required peripheral shape. This is the termination of a ply, where it is necessary to change the thickness of a component. The angular direction in which the fibres are to lie according to the lay-up datum. These angles are given in the lay-up table. Ident
12、ification number allocated to a ply. The origin point from which tape or broad goods edges commence. The position of a tape or broad goods edge within a ply profile relative to the ply stagger start point. Le. The amount by which the position of the ply edge is offset to avoid coincident joints occu
13、ring throughout the laminate thickness. See fig 2. Predicted thickness of a component after curing, taking into account the effects of consolidation, material type, bleed, etc. This includes any fibreglass layers, metallisation etc present in the lay-up. Composite ma ter ia 1 fibres p re-impregnated
14、 with resin. In order to prevent distortion of the component during the cure cycle, it is necessary that the orientation of the plies are mirrored about the neutral axis of each component (Le. balanced lay-up). Composite fibre pre-preg as purchased in various widths with the fibres arranged unidirec
15、tionally along the rolled out length. The surface against which the plies are subsequently cured. Oifferen t quantities of 00/900/450/1350 plies distributed unequally each side of the neutral axis. UNIDIRECTIONAL Characteristic direction of a tape corresponding (U.0.) to the direction of the fibres.
16、 WARP Longitudinally orientated yarn in a woven fabric. WEFT WOVEN FABRIC Direction at right angles to the warp. Woven composite fibre material (pre-preg) yarns normally supplied on a reel in one continuous lengt,. - CEN PREN*3074 91 m 3404589 0033673 T m prEN 3074 page 5 3.0 DRAWING ANNOTATION O 3.
17、1 Plies 3.1.1 Number of Plies Number of plies, which is the number of plies in each individual thickness area, shall be stated on the drawing in the lay-up diagram. 3.1.2 Ply thickness Ply thickness, which is the nominal thickness of one ply after curing, shall be stated on the drawing, or in the pa
18、rt list, or in the lay-up diagram. 3.1.3 Ply identification O Each ply shall be identified on the drawing and in the lay-up diagram by means of a 3 digit number and could be prefixed with the letter P, see fig 3. This number is for ply identification only and should not be confused as being a part n
19、umber. Where a ply is made up of portions only one identity number shall be used. The ply identity shall be shown on the drawing as below (with arrows or points), / iCE.N PREN83074 91 W 3404589 0013b74 L PEN 3074 page 6 3.1.4 Handed Plies Opposite handed single plies shall carry the same ply number
20、as the as drawn ply. Component profile (type) / As drawn I O“ 45* Opposite hand 3.1.5 Position of ply on component Position of ply on component shall be stated on the drawing or in the lay-up diagram. Examples are shown in annex A. 3.1.6 Ply Data Each ply in an operation shall be defined and shall c
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