1、_SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising theref
2、rom, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions.Copyright 2015 SAE InternationalAll rights reserved. No part of this publi
3、cation may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE.TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada)Tel: +1 724-776-4970 (out
4、side USA)Fax: 724-776-0790Email: CustomerServicesae.orgSAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visithttp:/www.sae.org/technical/standards/AMS3961/3AEROSPACEMATERIAL SPECIFICATIONAMS3961/3Issued 2015-12350 F Autoclave Cure, Low Flow
5、 Toughened Epoxy Prepregs, Type 35, Class 1, Grade 190, Fiber 1RATIONALEWidely distributed and available industry material specifications are required for procurement of composite materials whose allowables data is published in CMH-17. NOTICEThis report is published by SAE to advance the state of te
6、chnical and engineering sciences. The use of this report is entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, is the sole responsibility of the user.1. SCOPEThe intent of this specification is for the procurement of
7、the material listed on the QPL and, therefore, no qualification orequivalency threshold values are provided. Users that intend to conduct a new material qualification or equivalency program shall refer to the Quality Assurance section of the base specification, AMS3961.All material qualification and
8、 equivalency data has been archived and is available for review upon request. Contact the CMH-17 Secretariat (www.cmh17.org) for additional information.1.1 FormThis detail specification along with the base specification, AMS3961, establish the requirements for continuous unidirectional carbon fiber
9、impregnated with a modified B-staged epoxy resin (“unidirectional tape prepreg”). The prepreg is produced using a hot-melt process. 1.2 Classification1.3 ReinforcementThis reinforcement classification consists of the following Styles and Grades.1.3.1 Style shall specify the carbon fiber tow twist. F
10、or example, Style NT Never Twisted Tow.NT is the default style. When style is not specified in purchase order, Style NT shall be supplied.SAE INTERNATIONAL AMS3961/3 Page 2 of 151.3.2 Grade shall specify the carbon fiber tow size (i.e., the nominal number of filaments in a tow or nominal filament co
11、unt), where 1K denotes 1,000 filaments. For example, Grade 12K 12,000 filaments in a towAll Prepreg products qualified to this detail specification have the following classification: Type 35, Class 1, Grade 190, Fiber 1. 1.3.2.1 PrepregThe prepreg classification consists of the following:All Prepreg
12、 products qualified to this detail specification shall be classified per 1.2.1.2.1 through 1.2.1.2.5: For Ex. Type 35, Class 1, Grade 190, Fiber 1.1.3.2.2 TypeType shall specify the nominal prepreg resin content. For example: Type 35 Nominal resin content 35% by weight.1.3.2.3 ClassClass shall speci
13、fy prepreg product form. For example: Class 1 Unidirectional carbon fiber fabprepreg.1.3.2.4 GradeGrade shall specify nominal fiber areal weight in grams per square meter (gsm). For example: Grade 190 190 gsm nominal fiber areal weight.1.3.2.5 Fiber TypeThe carbon fiber type is designated as follows
14、: Fiber 1: Standard Modulus (31 to 35 Msi).1.3.2.6 Service Temperature CapabilityThe service temperature capability, used to establish the batch acceptance test temperature requirements, shall be designated as follows:ST (Standard Temperature) - service temperature of -65 to 180 F All batch acceptan
15、ce testing shall be performed at room temperature dry (70 F 10 F).ET (Elevated Temperature) service temperature of -65 to 250 F A portion of the batch acceptance tests shall be performed at elevated temperature dry (250 F 10 F).Note: If no service temperature capability is identified in the product
16、nomenclature, then “ST” shall be the default designation2. APPLICABLE DOCUMENTSThe issue of the following documents in effect on the date of the purchase order forms a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a document unless a spe
17、cific document issue is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply.2.1 SAE PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-6
18、06-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org.Base SpecificationAMS3961 350 F Autoclave Cure, Low Flow Toughened Epoxy Prepregs (Base Specification)CMH-17 Composite Materials Handbook SAE INTERNATIONAL AMS3961/3 Page 3 of 152.2 ASTM PublicationsAvailable from ASTM Int
19、ernational, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org.ASTM D1423 Standard Test Method for Twist in Yarns by Direct-CountingASTM D2344 Short-Beam Strength of Polymer Matrix Composite Materials and their Laminates ASTM D3039 Tensile Propert
20、ies of Polymeric Matrix Composite MaterialsASTM D3529/D3529M Matrix Solids Content and Matrix Content of Composite PrepregASTM D3530/D3530M Volatiles Content of Composite Material PrepregASTM D3531 Standard Test Method for Resin Flow of Carbon Fiber-EpoxyASTM D3532 Gel Time of Carbon Fiber-Epoxy Pre
21、pregASTM D3776 Mass per Unit Area (Weight) of FabricASTM D3878 Standard Terminology Composite MaterialsASTM D4018 Standard Test Methods for Properties of Continuous Filament Carbon and Graphite Fiber TowsASTM D6641 Compressive Properties of Polymer Matrix Composite Laminates Using a Combined Loading
22、 Compression (CLC) Test FixtureASTM E168 General Techniques of Infrared Quantitative AnalysisASTM E1252 Standard Practice for Obtaining Infrared Spectra for Qualitative Analysis2.3 OSHA PublicationsAvailable from U.S. Department of Labor/OSHA, 200 Constitution Avenue, Washington, DC 20210, Tel: 800-
23、321-6742, www.osha.gov/pls/publications/pubindex.list.29CFR-1910.1200 Hazard Communication2.4 ISO PublicationsAvailable from American National Standards Institute, 25 West 43rd Street, 4th Floor, New York, NY 10036, Tel: 212-642-4900, www.ansi.org.or if using the Switzerland address:Available from I
24、nternational Organization for Standardization, ISO Central Secretariat, 1, ch. de la Voie-Creuse, CP 56, CH-1211 Geneva 20, Switzerland, Tel: +41 22 749 01 11, www.iso.org.ISO 1890 Reinforcement yarns - Determination of twistISO 10119 Carbon fibre- Determination of densityISO 10548 Carbon fibre - De
25、termination of size contentISO 10618 Carbon fibre Determination of tensile properties of resin-impregnated yarnSAE INTERNATIONAL AMS3961/3 Page 4 of 152.5 Japanese Standards Association PublicationsAvailable from http:/www.jsa.or.jp/default_english.aspJIS R3912 Reinforcement yarns - Determination of
26、 twistJIS R7603 Carbon fibre- Determination of densityJIS R7604 Carbon fibre - Determination of size contentJIS R7608 Carbon fibre Determination of tensile properties of resin-impregnated yarnJIS Z7251 Labelling Of chemicals based on GHS 2.6 German Institute for StandardizationAvailable from www.din
27、.deDIN 65382 Aerospace; reinforcement fibres for plastics; tensile test of impregnated yarn test specimensDIN 65566 Aerospace; reinforcement fibres; determination of size content of carbon filament yarns, woven fabrics and chopped strandsDIN 65569 Aerospace; reinforcement fibres; determination of de
28、nsity of filament yarns; hydrostatic weighing method2.7 SACMA StandardsAvailable from American Composites Manufacturers Association, 1010 North Glebe Road, Suite 450, Arlington, VA 22201, Tel: 703-525-0511, www.acmanet.org.SACMA SRM 10R-94 Calculation of Fiber Volume of Composite Test LaminatesSACMA
29、 SRM 12R-94 Lot Acceptance of Carbon FibersSACMA SRM 14R-94 SACMA Recommended Method for Determination of Sizing Content on Carbon FibersSACMA SRM 18R-94 Glass Transition Temperature (Tg) Determination by DMA of Oriented Fiber Resin CompositesSACMA SRM 20R-94 High Performance Liquid Chromatography o
30、f Thermoset ResinsSACMA SRM 23R-94 Resin Content and Fiber Area Weight of Thermoset Prepreg with Destructive TechniqueSACMA SRM 25R-94 Onset Temperature and Peak Temperature for Composite System Resins Using Differential Scanning Calorimetry (DSC)2.8 DefinitionsFor definitions that are not provided
31、in this specification or other applicable AMS specifications, the definitions in DOT/FAA/AR-06/10 and DOT/FAA/AR-07/3 shall apply. For definitions not provided in DOT/FAA/AR-06/10, the definitions in ASTM D3878 shall apply. For definitions not provided in ASTM D3878, the definitions in CMH-17 shall
32、apply.BASE SPECIFICATION - A specification containing the basic requirements for a carbon fiber and prepreg material system. The base specification is used in combination with a detail specification to create the unique requirements for a carbon fiberand prepreg product.CARBON OR GRAPHITE FIBER - In
33、terchangeable terms used for continuous filament strands produced in accordance with this specification. Typically, graphite fiber is processed at temperature above 2,000 C, all standard and intermediate modulus carbon fiber is processed below 1,600 C.SAE INTERNATIONAL AMS3961/3 Page 5 of 15CARBON F
34、IBER LOT - See 3.2.2.10.CARBON FIBER TOW - An untwisted, never twisted or twisted bundle of continuous carbon filaments.DATE OF MANUFACTURE - The date (day or month) a lot of fiber (carbon or PAN) is manufactured. If the production run extends into the following month, the start date (day or month)
35、is recorded.DETAIL SPECIFICATION - A specification containing requirements that is used in combination with a base specification to create the unique requirements for a fiber product.DOFF (noun) - All spools of fiber within a lot that are taken off the take-up winders within a given time period. A u
36、nique doff number is typically assigned to the spools. However, some manufacturers do not assign doff numbers because the spools are doffed independently when they reach the correct weight during production.DOFF (verb) - To remove spools of fiber from the take-up winders.DOFF AVERAGE - The average o
37、f test results for all specimens tested from the same doff sample.DOFF SAMPLE - A fiber tow sample removed from the take-up winders in accordance with SACMA SRM 12. Doff sample zero (0) is the sample taken at start-up. DOWN SPOOLING - A procedure that creates multiple spools from a single spool.FORE
38、IGN MATERIALS - All materials not characteristic of the product, such as materials that are not carbon fiber or not PAN fiber.NEVER TWISTED TOW - A tow that has never been twisted; denoted by the symbol “NT.”POLYACRYLONITRILE (PAN) - A polymer used as a precursor product for carbon fiber production.
39、PAN LOT - PAN fiber manufactured in a single production run on the same equipment within a defined set of process parameters.PURCHASER - Any organization that procures product in conformance to this basic specification and its associated detail specification.QUALIFIED PRODUCT LIST - Qualified produc
40、t list established for a given detail material specification.RE-SPOOLING - A procedure that creates a single spool from multiple spools. Also a procedure that winds material from a single spool onto a different (sometimes smaller or larger diameter) spool.RUN - (As used in fiber production) a contin
41、uous (uninterrupted) manufacturing process in which carbon fiber is produced.SIZING - A polymeric coating applied to carbon fiber tows to improve adhesion to resin systems and handling characteristics for subsequent processes (for example, weaving, or impregnation).SPLICE - A tow that has been cut o
42、r broken and subsequently had the ends rejoined.MANUFACTURER - The organization manufacturing and certifying production to this specification.MANUFACTURER PRODUCT DESIGNATION - The identification or name given to the product by the manufacturer.SURFACE TREATMENT - A treatment applied to fiber to imp
43、rove the bond between the fiber surface and the resin matrix in a composite material.TOW - A strand of continuous fibers carbon fibers are supplied in the form of tows. A tow can nominally contain from 500 to 48,000 carbon fiber filaments. Typical tow counts (number of filaments within a tow) are 3,
44、000 (or 3K), 6,000 (or 6K), 12,000 (or 12K), and 24,000 (or 24K). Larger tows are also available but not commonly used in aerospace applications.SAE INTERNATIONAL AMS3961/3 Page 6 of 15TRANSITION MATERIAL - Material which is removed from the line during non-steady-state production because of process
45、 interruptions or start-up.TWISTED TOW - Tow with intentional twist in its final form; denoted by the symbol “TT” or “ST”.UNTWISTED TOW - Previously twisted tow that has had its twist removed in its final form; denoted by the symbol “UT.”WINDERS - Equipment used to collect the carbon fiber on the sp
46、ool cores at the end of the carbon fiber conversion processes (end of the carbon fiber line). Also known as take-up winders.3. TECHNICAL REQUIREMENTS3.1 General RequirementsIn case of conflict between requirements of the basic specification and this detail specification, requirements of this details
47、pecification shall govern. 3.2 Constituent Material Requirements3.2.1 Epoxy Resin SystemUp to 15% resin blending is allowed.3.2.2 Reinforcement3.2.2.1 Carbon Fiber Tow CompositionCarbon fiber tows shall be composed of carbon filaments manufactured from polyacrylonitrile (PAN) precursor. All raw mate
48、rial ingredients and auxiliary materials used in the manufacture of carbon fibers shall be controlled by material or procurement specifications. The carbon fiber manufacturer shall ensure that the PAN manufacturer produce uniform and consistent PAN fiber precursor within the PCD control limits. Thes
49、e controls shall include constituent ingredients and ratios, PAN lot definition, and shelf life requirements. A fiber lot must contain 85% PAN from a single lot; blending is permitted from up to three additional PAN lots not to exceed 15% of the tows in the lot.3.2.2.2 Fiber Surface TreatmentCarbon fiber tow may be surface treated to enhance the fiber/matrix interface of the composite material. The
