1、 AEROSPACE MATERIAL SPECIFICATION Cloth, Organic Fiber, High Modulus Epoxy Resin Impregnated OC Style 281, 175 (350) 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 volun
2、tary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your wr
3、itten comments and suggestions. Copyright 2005 SAE International All rights reserved. No part of this publication 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 perm
4、ission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: 724-776-4970 (outside USA) Fax: 724-776-0790 Email: custsvcsae.org SAE WEB ADDRESS: http:/www.sae.org AMS 3903/3AIssued JUN 1975 Revised JAN 1988 Reaffirmed JUN 2005 Superseding AMS 3903/3 1. SCOPE:1.1 Form: Thi
5、s specification covers one type of epoxy-resin-impregnated organicfibers in the form of woven cloth.1.2 Application: Primarily for use in lightweight composites requiring highstrength in tension at temperatures up to 175C (350F).1.3 Classification: Style 281 cloth woven from organic fibers, impregna
6、ted withepoxy resin for service at temperatures up to 175C (350F).2. APPLICABLE DOCUMENTS: See AMS 3903.3. TECHNICAL REQUIREMENTS:3.1 Basic Specification: The complete requirements for procuring the productdescribed herein shall consist of this document and the latest issue of thebasic specification
7、, AMS 3903.3.2 Material: The product shall be AMS 3902, Style 281 cloth impregnated withepoxy resin formulated to meet the requirements specified herein.3.2.1 Storage Life: The product shall meet the requirements of thisspecification when tested at any time up to three months from the date ofreceipt
8、 by the purchaser, provided it has been stored at a maximumtemperature of 18C (OF) in the original waterproof containers.THIS REVISION CONTAINS ONLY EDITORIAL CHANGES3.2.2 Working Life: The product shall meet the requirements of thisspecification when tested after exposure at a relative humidity not
9、 higherthan 70% and a temperature not higher than 25C (77F) for a continuousperiod of up to 14 days.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE - 2 - AMS 3903/3A AMS 3903/3A3.3 Properties of
10、Uncured Impregnated Material: Shall be as follows; testsshall be performed on the product as-received, after warming to above thedew point prior to sampling, and in accordance with test methods listed inthe basic specification:3.3.1 Volatile Content by weight, max 2%Test temperature: 120C 5 (250F 10
11、)Test time: 60 min. 53.3.2 Total Nonfiber Content by weight 45% 43.3.3 Resin Flow by weight 10 - 30%3.3.4 Gel time Preproduction value 20%3.3.5 Tack Shall adhere for at least 30 min.3.4 Properties of Cured Laminate: Shall be as follows; tests shall be performedon specimens cut from a test panel prep
12、ared as specified in the basicspecification and in accordance with the methods specified therein:3.4.1 Mechanical Properties: Shall be as specified in Table I.3.4.2 Density: Shall be determined on the test laminate used to determinemechanical properties; values for each test laminate shall be report
13、ed.Fiber density and cured resin density shall also be reported.3.4.3 Void Content: Shall be not greater than 3%.4. QUALITY ASSURANCE PROVISIONS: See AMS 3903.5. PREPARATION FOR DELIVERY: Shall be in accordance with AMS 3903 and thefollowing:5.1 Exterior package marking shall indicate storage temper
14、ature of “-18C (0F)maximum.”6. ACKNOWLEDGMENT: See AMS 3903.7. REJECTIONS: See AMS 3903.8. NOTES: Shall be in accordance with AMS 3903 and the following:8.1 Marginal Indicia: This revision contains only editorial changes from theprevious issue of this specification and, therefore, no phi (0) symbols
15、indicating technical changes are required.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE - 3 - AMS 3903/3A AMS 3903/3AMPa TBR TBR TBR TBR TBR TBR TBR175C (350)psiTBRTBR TBR TBR TBR TBR TBRMPa 41
16、426,20015924,10027620,70028RoomTemperaturepsi60,0003.8 x 10623,0003.5x10640,0003.0 x 1064,000MPa TBR TBR TBR TBR TBR TBR TBR-55C (-65F)psi TBR TBR TBR TBR TBR TBR TBRValue Test TemperatureTABLE IMechanicalProperties ofCured LaminatesTensile Strength, min(3)Tensile Modulus, min(3)Compressive Strength
17、, min(3)Compressive Modulus, min(3)Flexural Strength, min(3)Flexural Modulus, min(3)Short Beam Shear Strength, minNOTES: 1. Averageof 4 determinationspertest. No individualvalueshallbe lessthan90% of the averagevalue specified.2.Testafternotless than30 min.exposureat the testtemperature.3. Property
18、valuesarebasedon a test laminatewith a fiber volumeof 50% 3. Certainpropertyvalues may beadjusted for other fibervolumesof the testlaminate bymultiplying the listedrequirement bytheratio: ActualFiberVolume,%/50.Whensuch adjustmentisused,report theactualfibervolume ofthetest laminate.4.TBR-Tobereported.(1)(2)Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
