1、 AEROSPACE MATERIAL SPECIFICATION Cloth, Organic Fiber, High Modulus Epoxy Resin Impregnated OC Style 281, 80 (180) 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 volunt
2、ary, 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 wri
3、tten 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 permi
4、ssion 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 3903/7AIssued JUN 1975 Revised JAN 1988 Reaffirmed JUN 2005 Superseding AMS 3903/7 THIS REVISION CONTAINS
5、ONLY EDITORIAL CHANGES.1. SCOPE:1.1 Form:This 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 80C (180F).1.3 Classification: Style 28
6、1 cloth woven from organic fibers, impregnated withepoxy resin for service at temperatures up to 80C (180F).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
7、the latest issue of thebasic specification, AMS 3903.3.2 Material:The product shall be AMS 3902, Style 281 cloth impregnated withepoxy resin formulated to meet the requirement specified herein.3.2.1 Storage Life: The product shall meet the requirements of thisspecification when tested at any time up
8、 to three months from the date ofreceipt by the purchaser, provided it has been stored at a maximumtemperature of -18C (0F) in the original waterproof containers.3.2.2 Working Life: The product shall meet the requirements of thisspecification when tested after exposure at a relative humidity not hig
9、herthan 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 3903/7A AMS 3903/7A3.3 Properties of Uncu
10、red 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:Test time:150C 5 (30
11、0F 10)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 prepared a
12、s 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 reported.Fi
13、ber density and cured resin density shall also be reported.3.4.3Void 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 temperature o
14、f “-18C (0F)maximum.“6. ACKNOWLEDGMENT: See AMS 3903.7. REJECTIONS: See AMS 3903.8. NOTES: Shall be in accordance with AMS 3903 and the foll8.1 Marginal Indicia: This revision contains only editorialprevious issue of this specification and, therefore, no phi (0) symbolsindicating technical changes a
15、re required.owing:changes from theCopyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE - 3 - AMS 3903/7A AMS 3903/7AValue(l)Test Temperature(2)Room-500C(-65F) Temperature 80C(180F)psi MPa psi MPa psi
16、MPaTensile Strength, min(3)TBRTBR 60,000 415 TBR TBRTensile Modulus, min(3)TBR TBR3.8 x10626,200 TBR TBRCompressive Strength, min(3) TBRTBR 23,000 160 TBR TBRCompressive Modulus, min(3)TBRTBR 3.5 x 10624,100 TBR TBRFlexuralStrength, min(3)TBR TBR 40,000 275 TBR TBRFlexural Modulus, min(3)TBRTBR 3.0
17、x 106 20,700 TBRTBRShort Beam Shear Strength, TBR TBR 6,000 40 TBR TBRminNotes: 1. Average of 4 determinations per test. No individual value shall be less than 90% of the averagevalue specified. *“2. Test after not less than 30 min. exposure at the test temperature. 3. Property values are based on a
18、 test laminate with a fiber volume of 50% 3. Certain propertyvalues may be adjusted for other fiber volumes of the test laminate by multiplying the listed requirement by the ratio: Actual Fiber Volume, %/5. When such adjustment is used, report theactual fiber volume of the test laminate. P4. TBR -To be reported.%/50.TABLE I-Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
