1、AECMA PREN*b044-1 95 10123L1 OOltO19Lt 961 AECMA STANDARD NORME AECMA AECMA NORM prEN 6044-1 Edition PI December 1995 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES - Tel. (32) 2 775 81 10 - Fax. (32) 2 775 81 11 ICs : Descriptors : ENGLISH VER
2、SION Aerospace series Carbon fibre reinforced epoxy prepreg Technical specification Part 1 : General requirements Srie arospatiale Primprgn carbone poxy Spcification technique Partie 1 : Exigences gnrales Luft- und Raumfahrt Kohlenstoffaserverstrktes Epoxidharz - Prepreg Technische Lieferbedingungen
3、 Teil 1 : Allgemeine Anforderungen This “Aerospace Series I Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concer
4、ned Technical Committee following comment by the Member countries. 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 re-identification of the standard. After examination
5、and signature of the AECMA Standard Checking Centre (NPSI and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technop
6、olis 54 - 199, rue Jean-Jacques Rousseau - 921 38 ISSY-LES-MOULINEAUX CEDEX I Comments should be sent within six months after the date of publication to I Edition approved for publication 1995-1 2-1 5 AECMA Gulledelle 94 B-1200 BRUXELLES I aecma 1995 AIBITFG Chairman Mr K. Schneider Copyright Associ
7、ation Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AECIA PRENmb044-L 95 LOL23LL OOLOL9S BTB Page 2 prEN 6044-1 : 1995 Contents list 1 Scope 2 Normative references 3 Defin
8、itions 4 Requirements 5 Qualification 6 Release testing 7 Preparation for delivery 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-,-,- AECMA PREN*b044-1 9
9、5 W 1012311 001019b 734 Page 3 prEN 6044-1 : 1995 1 Scope This specification presented in several parts covers the requirements for carbon fibre materials preimpregnated with epoxy or modified epoxy resin for manufacturing primary and secondary airframe and aerospace structures. Part 1 is the basic
10、technical specification, while part 2 and following parts give specific information about the qualification programs related to relevant material specifications. This specification relates to unidirectional tapes and woven fabrics. Three dimensional woven forms or chopped strand non-woven mats are n
11、ot covered. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments t
12、o 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 latest edition of the publication referred to applies. EN 2000 Aerospace series Quality assurance EN aerospace products ) EN 2561 Aerospace se
13、ries Unidirectional laminates carbon thermosetting resin Tensile test parallel to the fibre direction ) EN 2562 Aerospace series Unidirectional laminates carbon thermosetting resin Flexural test I EN 2563 EN 2565 EN 2597 EN 2743 EN 2823 EN 2850 EN 3042 Aerospace series Unidirectional laminates carbo
14、n thermosetting resin Determination of interlaminar shear strength Aerospace series Preparation of carbon fibre reinforced resin panels for test purposes ) Aerospace series Carbon thermosetting resin unidirectional laminates Tensile test perpendicular to the fibre direction I Aerospace series Standa
15、rd procedure for conditioning prior to testing I Aerospace series Fibre reinforced plastic Test method for the determination of the effect of exposure to humid atmospheres on physical and mechanical characteristics ) Aerospace series Fibre reinforced plastics Testing unidirectional laminates and wov
16、en fabric laminates Compression test I Aerospace series Quality assurance EN products Qualification orocedure ) Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from
17、 IHS-,-,-Page 4 prEN 6044-1 : 1995 , EN 3615 Aerospace series Fibre reinforced plastics Procedure for the determination of the conditions of exposure to humid atmosphere and the determination of moisture absorption ) EN 6032 EN 6033 EN 6039 EN 6040 EN 6041 EN 6042 EN 6043 Aerospace series Fibre rein
18、forced plastics Determination of the glass transition temperatures ” Aerospace series Carbon fibre reinforced plastics Determination of interlaminar fracture toughness energy - Mode I - GI, I Aerospace series Fibre reinforced plastics Determination of the exothermic reaction during curing of prepreg
19、 materials ) Aerospace series Non metallic materials Analysis of thermoset systems by high performance liquid chromatography ) - Aerospace series Non metallic materials Analysis of non metallic materials (uncured) by differential scanning calorimetry I Aerospace series Non metallic materials Analysi
20、s of organic compounds by infrared spectroscopy ) Aerospace series Fibre reinforced plastics Determination of viscosity and gel time of matrix resins ) 3 Definitions 3.1 General 3.1.1 Woven fabric Carbon filament yarns woven into a fabric of any two-dimensional weave pattern. Warp and weft tracer ya
21、rns of another material may be incorporated into the fabric when agreed (see 3.2.2). 3.1.2 Unidirectional sheet and tape (UD prepreg) A planar array of parallel carbon fibre filament yarns. When required stabilising fibres of another material (e.g. aramid fibre) may be stitched at intervals into the
22、 array at 90 to the yarn orientation. 3.1.3 Preimpregnate (Prepreg) Woven fabric or unidirectional sheethape impregnated with a matrix resin and suitably processed e.g. B-staged) for storage, handling purposes and curing by heat and pressure without further additives. I Published as AECMA Prestandar
23、d at the date of publication of this standard 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-,-,-AECMA PRENxb044-L 75 LOL23LL OOLOLSB 507 = Page 5 prEN 60
24、44-1 : 1995 3.1.4 Material specification MSI The material specification lists all data describing the performance of the material group. It gives the requirements, limits and test methods for the qualification of a certain product group. This performance level is directly related to the design allow
25、ables of that group. 3.1.5 Individual product specification IPS The individual product specification gives the complete information about a certain product of one prepreg manufacturer and its performance. Each single product has a separate specification. The individual performance and the acceptance
26、 values of the product for release testing are listed including the requirements for physico-chemical testing. 3.1.6 Qualification Proof that the prepreg producer and the prepreg supplied meet the requirements as laid down in this specification and the relevant material specification. The proof is g
27、iven by the qualification testing. 3.1.7 Qualification testing Qualification testing is performed on representative production quantities of a specific type or material from a particular manufacturing source to determine whether the material will meet the full requirements of this specification and
28、the relevant material specification. These results are also used to establish the individual product specification. 3.1.8 Side qualification Side qualification is a reduced qualification program resulting from minor changes in the original qualified material. 3.1.9 Compatibility Compatibility means
29、that in Co-curing processes the performance of each material shall not be affected by the other materials (e.g. specified adhesive films, core splice, potting compound etc.). The Co-cured materials shall be fully cured in one cure cycle. 3. I. 1 O Release testing / supplier quality control testing R
30、elease testing is that performed by the manufacturer on each production batch of material to ensure that the material supplied is of the same type, form, and quality as that supplied for the qualification tests. 3.1.1 1 Acceptance testing Testing performed by the purchaser on each production batch o
31、f products to ensure that the product supplied is of the same type, form, and quality as that supplied for the qualification tests. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted
32、without license from IHS-,-,- - AECMA PRENab044-L 95 = LOL23LL OOLOL99 443 m Page 6 prEN 6044-1 : 1995 3.2 Specific 3.2.1 Resin batch A quantity of homogeneous resin prepared, to its final ready-for-impregnation form, (composed from neat resin and constituents (see 5.3.5.2) in one operation with tra
33、ceability to individual component batches as described in relevant production specifications of the prepreg manufacturer. 3.2.2 Woven fabric batch A quantity of fabric of a certain weaving style produced on a specific loom type in accordance with relevant production specifications of the weaver givi
34、ng full traceability. The production run of the batch shall not be interrupted by a run of a different material. One batch of fabric may contain a maximum of three batches of carbon filament yarns in warp direction and only one batch in weft direction (case 3:l) or one batch in warp and up to the th
35、ree batches in weft (case 1 :3). In case of 1 :3 the additional requirement of the sampling plan (see 6.8.1) has to be fulfilled. Tracer yarns may be incorporated (material: preferably glass). The use shall be agreed between supplier and purchaser. The qualification batches shall contain tracer yarn
36、s. The pattern of the tracers shall consist of yarn incorporated every 150 mm along the fabric length (warp direction) and every 50 mm across the web (weft direction). Qualified fabrics produced without tracer yarns do not need requalification. 3.2.3 Preimpregnate batch (prepreg batch) Preimpregnate
37、 containing in the case of uni-directional sheet or tape not more than three batches of carbon yarn all from the same supplier, impregnated with one batch of resin in one continuous operation In case of preimpregnated fabric a batch is produced in one continuous operation using one batch of resin an
38、d one or several batches of dry fabrics, with traceability to the individual batches of fabric used. These batches have to be constituted from the same type of fabric, supplied by the same weaver. For film impregnation it is permissable for each batch of preimpregnate to contain two different batche
39、s of resin, one each side of the preimpregnate, provided there is no change within the preimpregnate batch. A resin batch may contain up to 15% of another approved and within shelf-life resin batch of the same resin type, blended homogeneously with the major resin batch. Full traceability shall be m
40、aintained for all raw material constituents. The blended resin batch will have a single new batch number. A continuous manufacturing operation which conforms to a fixed manufacturing process is defined as one in which the process is not interrupted for more than 72 continuous hours, during this time
41、 the materials must be stored according to the certified production procedure. Any interruption must not contain a different product run. The total production time, interruptions included, shall not exceed five days unless otherwise stated in the relevant IPS. 4 Requirements This document defines th
42、e requirements and expected performance of carbon fibre reinforced epoxy prepreg. For the complete definition of a particular material type, in addition to part 1 the relevant qualification program (e.g. part 2, 3, .I and the associated material specification is needed. The individual product specif
43、ication (IPS) will define the material specific performance and will include any specific requirement not covered in this document or may indeed over-ride a particular requirement in this document. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under licens
44、e with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 7 prEN 6044-1 : 1995 4.1 General requirements 4.1.1 Certified production procedure The product shall be manufactured to fulfil the requirements of the relevant material specification and this technica
45、l specification. Prior to manufacture of the first qualification batch the prepreg manufacturer shall completely identify the description of the raw materials, equipment, procedures, processes and their manufacturing standards. The certified production procedure shall be presented to the purchaser u
46、pon request, if required after the signature of a confidentiality agreement for the experts who need to know. The purchaser shall treat all information contained in the schedule as confidential. Changes of the certified production procedure of a qualified product are subject to the written approval
47、of the purchaser. The release test report for the first delivery made after the changed certified production procedure shall contain a reference to the change. 4.1.2 Traceability To be presented on request, each individual product shall be identifiable at all stages of manufacture and delivery. 4.1.
48、3 Workmanship The material specified herein shall be processed as required in accordance with the best practice for high quality. Any defects in excess of those allowed according to the following as specified shall be cause for rejection of the specific roll. Two classes of workmanship with respect
49、to definition of defective areas are available : Class A and Class B (as defined herein). The purchase order shall state which class to be delivered and in addition if necessary special requirements due to application by automated placement equipment which shall be specified in the relevant IPS. Following requirements shall be valid if not indicated specifically. 4.1.3.1 General Defective areas are part of the delivered quantity
