EN 4408-006:2005
(Main)Aerospace series - Technical drawings - Representation of parts made of composite materials - Part 6: Preforms
Aerospace series - Technical drawings - Representation of parts made of composite materials - Part 6: Preforms
This standard specifies the rules for the representation of preforms of composite materials as well as the information to be indicated in the technical drawings.
It is applicable to aerospace structures using preforms.
It shall be used together with EN 4408-1.
Luft- und Raumfahrt - Technische Zeichnungen - Darstellung von Teilen aus Verbundwerkstoffen - Teil 6: Vorformen
Diese Norm legt die Regeln für die Darstellung von Vorformen von Verbundwerkstoffen, sowie die Informationen, die auf den technischen Zeichnungen angegeben werden müssen, fest.
Sie kommt auf in der Luft- und Raumfahrtstrukturen, in denen Vorformen eingesetzt werden, zur Anwendung.
Sie muss zusammen mit EN 4408 001 verwendet werden.
Série aérospatiale - Dessins techniques - Représentation des articles en matériaux composites - Partie 6 : Préformes
Aeronavtika – Tehniške risbe – Prikaz delov, izdelanih iz kompozitov – 6. del: Predhodne oblike
General Information
- Status
- Published
- Publication Date
- 10-May-2005
- Withdrawal Date
- 29-Nov-2005
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 1 - General
- Current Stage
- 6060 - Definitive text made available (DAV) - Publishing
- Start Date
- 11-May-2005
- Completion Date
- 11-May-2005
Overview
EN 4408-006:2005 (CEN, AECMA-STAN) specifies rules for the representation of preforms of composite materials on technical drawings for aerospace structures. It complements EN 4408-001 (general rules) and is intended to ensure consistent, unambiguous graphical and informational presentation of preforms used in aircraft and space vehicle components.
This standard addresses the challenge of describing complex preform geometries and manufacturing intent so designers, manufacturers and quality teams can interpret drawings reliably.
Key Topics
- Scope and applicability: Rules apply to preforms used in aerospace structures and must be used in conjunction with EN 4408-001.
- Terms and definitions: Clear definitions provided for preform types and terminology such as braided, woven, cowoven, 2,5D multilayer, nD (oriented multidirectional) and rosette.
- Representation conventions:
- 2,5D multilayers: show lapped representation, number of intertwined layers, repeated motif and thread counts warpwise and weftwise.
- Rosettes: indicate outside diameter (D), inside diameter (d), thickness (e), spiral angle (α) and any additional requirements needed to understand the piling of layers.
- nDs: use conventional and perspective images plus appropriate cross-sections to convey fibre orientation and stacking.
- Braids: present areas with associated braiding tables to identify braiding angles and zones where the angle changes; use draped-item rules with additions for braided geometry.
- Woven and cowoven parts: apply drape and seam representation rules, use associated symbols and lay-up/grafting tables for layer identification and directions.
Applications
This document is practical for engineers and drafters producing technical drawings for:
- Structural preforms manufactured by weaving, braiding, winding or combining hybrid fabrics.
- Manufacturing work instructions where clear preform orientation, thickness and lay-up data are required.
- Quality control and inspection documents that require unambiguous cross-sections and dimensional callouts.
Benefits include improved communication between design and production, reduced risk of misinterpretation, and smoother integration with manufacturing processes when combined with EN 4408-001.
Related Standards
- EN 4408-001: Technical drawings - Part 1: General rules (normative reference).
- EN 4408-002, EN 4408-003, EN 4408-004, EN 4408-005 - other parts of the Aerospace series covering laminated parts, cores, wound items and seams respectively.
Practical note: use the representation examples and tables in EN 4408-006:2005 as templates to document preform parameters (layer count, orientations, braid/spiral angles, diameters and thickness) so that manufacturing, inspection and procurement have a single clear source of definition.
Frequently Asked Questions
EN 4408-006:2005 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Technical drawings - Representation of parts made of composite materials - Part 6: Preforms". This standard covers: This standard specifies the rules for the representation of preforms of composite materials as well as the information to be indicated in the technical drawings. It is applicable to aerospace structures using preforms. It shall be used together with EN 4408-1.
This standard specifies the rules for the representation of preforms of composite materials as well as the information to be indicated in the technical drawings. It is applicable to aerospace structures using preforms. It shall be used together with EN 4408-1.
EN 4408-006:2005 is classified under the following ICS (International Classification for Standards) categories: 01.100.99 - Other standards related to technical drawings; 49.020 - Aircraft and space vehicles in general. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase EN 4408-006:2005 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2005
Aeronavtika – Tehniške risbe – Prikaz delov, izdelanih iz kompozitov – 6. del:
Predhodne oblike
Aerospace series - Technical drawings - Representation of parts made of composite
materials - Part 6: Preforms
Luft- und Raumfahrt - Technische Zeichnungen - Darstellung von Teilen aus
Verbundwerkstoffen - Teil 6: Vorformen
Série aérospatiale - Dessins techniques - Représentation des articles en matériaux
composites - Partie 6 : Préformes
Ta slovenski standard je istoveten z: EN 4408-006:2005
ICS:
01.100.99 'UXJLVWDQGDUGLY]YH]LV Other standards related to
WHKQLþQLPULVDQMHP technical drawings
49.020 Letala in vesoljska vozila na Aircraft and space vehicles in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 4408-006
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2005
ICS 01.100.99; 49.020
English version
Aerospace series - Technical drawings - Representation of parts
made of composite materials - Part 6: Preforms
Série aérospatiale - Dessins techniques - Représentation Luft- und Raumfahrt - Technische Zeichnungen -
des articles en matériaux composites - Partie 6 : Préformes Darstellung von Teilen aus Verbundwerkstoffen - Teil 6:
Vorformen
This European Standard was approved by CEN on 15 July 2004.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained 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 translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
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, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4408-006:2005: E
worldwide for CEN national Members.
Contents Page
Foreword .3
1 Scope.4
2 Normative references.4
3 Terms and definitions.4
4 Representation of preforms on drawings .5
4.1 Representation of 2,5 D multilayers .5
4.2 Representation of rosettes.6
4.3 Representation of nDs.7
4.4 Representation of braids.7
4.5 Representation of woven and cowoven parts .9
Annex A (informative) Example of the representation of 2,5 D weaving.10
Bibliography.12
Foreword
This document (EN 4408-006:2005) 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 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 conflicting 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 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,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and the United Kingdom.
1 Scope
This standard specifies the rules for the representation of preforms of composite materials as well as the
information to be indicated in the technical drawings.
It is applicable to aerospace structures using preforms.
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 edition 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.
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
braided
tubular or plane shape obtained by a balance intertwining of continuous threads
3.2
braided into shape
braided with a mandrel
3.3
cowoven (hybrid fabric)
fabric made of different types of threads (e.g. carbon/aramid hybrid fabric)
3.4
cowoven into shape
woven into shape and made of different types of threads
3.5
level
elementary structure of one layer in the weft or warp direction
3.6
multilayer (2,5 D)
fabric the weft threads of which cross several levels of warp but not all of them
3.7
nD
oriented multidirectional reinforcement (industrial copyright)
3.8
preform
name given to different stage of all part of the item prior to obtaining the required composite material
SIST EN 4408
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