1、 AEROSPACE MATERIAL SPECIFICATION Carbon Fiber Cloth 8HS Style Fabric Epoxy Resin Impregnated 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 applicabi
2、lity 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 written comments and sugg
3、estions. 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 permission of SAE. TO PLACE
4、 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 3897/1Issued OCT 1988 Reaffirmed JUN 2005 1. SCOPE:1.1 Form: This specification covers one type of epoxy-resin-impregnated carbo
5、nfibers in the form of eight harness satin fabric woven from continuous fibertow.1.2 Application: Primarily for use in structural composites requiring strengthup to 120C (248F).2.2.1 Aerospace Recommended Practices:ARP1610 - Physical-Chemical Characterization Techniques, Epoxy Adhesiveand Pregreg Re
6、sin Systems3. TECHNICAL REOUIREMENTS:3.1 Basic Specification: The complete requirements for procuring the productdescribed herein shall consist of this document and the latest issue of thebasic specification, AMS 3897.3.2 Material: The product shall be cloth, woven from continuous carbon fibertows a
7、nd impregnated with uncured epoxy resin formulated to meet therequirements specified herein.3.2.1 Fiber: Shall be 3000 end AMS 3892 carbon fiber twisted strand for bothwarp and fill.APPLICABLE DOCUMENTS: Shall be in accordance with AMS 3897 and the following:Copyright SAE International Provided by I
8、HS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE - 2 - AMS 3897/1 AMS 3897/13.2.2 Epoxy Resin: Shall be a thermosetting formulation meeting therequirements of AMS 3727 and capable of impregnating carbon cloth.3.2.2.1 Epoxy Resin DSC:Resi
9、n in the uncured pregreg shall give an exothermpeak temperature at 5C/minute of - 222C-432F) when tested in accordance with ARP1610.3.2.3 The weave shall be an eight-harness, satin weave in which eachwarp and fill goes under one, and over seven, then under one, and repeat.The interweaving of the war
10、p and fill shall be staggered, i.e., the No. 1warp shall go over the No. 1, No. 9, No. 17, and subsequent fill, and theNo. 2 warp shall go over the No. 4, No. 12, No. 20, and subsequent fill.3.3 Properties: Cloth shall conform to the following properties:3.3.1 Area1 Weight: - 11.2 ounces/square yard
11、 ASTM D3776- 388 3.3.2 Fabric Count:- 25 tows per inch (25.4 - 24 tows per inch (25.4 3.3.3 Storage Life: The product shall meet the requirements of thisspecification when tested at any time up to six months from date ofreceipt by purchaser provided it has been stored in the original unopened3.3.4 W
12、orking Life: The product shall meet the requirements of thisspecification when tested after continuous exposure for up to 20 dayswithin the relative humidity and temperature limits shown in the basicspecification, AMS 3897.3.3.5 Drapability: No fiber breakage shall be visible when the cloth is bent1
13、80 degrees around a mandrel having a diameter of 3.4 Properties of Uncured Impregnated Product: Shall be as follows: tests shallbe performed on the product after warming to above the dew point prior tosampling and in accordance with test methods listed in the basicspecification.3.4.1 Volatile Conten
14、t, maximum 3% of resin weightTest temperatureTest time150C 5 (302F 15 - 60 minutes3.4.2 Resin Solids Content 42% by weight 33.4.3 Resin Flow - 25% by weight(9F/minute)202(39610.4(352 g/m2)Warp 23Fillmm)22 mm)1/4 inch (6.4mm).9)(0F)5Weave:Copyright SAE International Provided by IHS under license with
15、 SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE - 3 - AMS 3897/1 AMS 3897/13.4.4 Gel Time, minutes Preproduction Value 10%3.4.5 Typlcal ply thickness, uncured 0.017 inch (0.43 mm)4. QUALITY ASSURANCE PROVISIONS: See AMS 3897.5. PREPARATION FOR DELIVERY: Sha
16、ll be in accordance with AMS 3897 and the following:5.1 Exterior package marking shall indicate storage temperature not higher than-18C (0F).6. ACKNOWLEDGMENT: See AMS 3897.7. REJECTIONS: See AMS 3897.8. NOTES: See AMS 3897.3.5 Properties of Cured Laminates: Shall be as follows, determined on specim
17、enscut from a test panel prepared as specified in the basic specification. Thespecific cure cycle for AMS 3727 is given in 3.5.1.3.5.1 Cure Cycle:3.5.1.1 Apply not less than 22 inches (559 mm) of mercury vacuum to vacuum bag.Apply 85 to 100 psi (586 to 689 kPa) pressure on laminate. Vent vacuumbag t
18、o atmosphere when pressure reaches 20 psi (138 kPa).3.5.1.2 Raise laminate temperature to 180C 5 (356F 9) and 0.6 - 2.8C per minute (1 - 5F/minute) based on lagging thermocouple.3.5.1.3 Hold at 180 5 (356F 9) for 120 to 135 minutes.3.5.1.4 Cool laminate at a rate not greater than 3C (5F) per minute.
19、 Below60C (140F) release pressure and remove laminate. Temperatures basedon lagging thermocouple.3.5.2 Mechanical Properties: Shall be as specified in Table I.3.5.3 Cured Thickness per Ply: 0.014 inch 0.001 (0.36 mm 0.025). Copyright SAE International Provided by IHS under license with SAENot for Re
20、saleNo reproduction or networking permitted without license from IHS-,-,-SAE - 4 - AMS 3897/1 AMS 3897/1TABLE IMECHANICAL PROPERTIES OF CURED LAMINATESValue Test Temperature20 - 30C 120C 5 (3)(68 - 86F) (248F 9)Propertypsi MPa psi MPaTensile Strength, minimum(2)Warp 75,000 517 70,000 483Fill 70,000
21、483 70,000 483Tensile Modulus, minimum(2)Warp 9,000,000 62,053 9,000,000 62,053Fill 8,500,000 58,605 8,500,000 58,605Compressive Strength, minimum(2)(4)Warp 67,500 465 45,000 310Fill 67,500 465 45,000 310Compressive Modulus, minimum(2)(4)Warp 7,500,000 51,711 7,500,000 Fill 7,000,000 48,263 7,000,00
22、0 48,263Interlaminar Shear Strengthminimum 8,500 58.6 5,000 34.5NOTES: 1. No individual value shall be less than 90% of the average valuespecified.2. Property values are based on a test laminate with a fiber volume of58%. Property values may be adjusted for other fiber volumes of thetest laminate by
23、 multiplying the listed requirement by the ratio:Actual Fiber Volume / 58%. When such adjustment is used, report theactual fiber volume of the test laminate.3. Test after not less than 30 minutes exposure at the test temperature.4. To be reported in test report.preproduction(1)51,711Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
