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 there
2、from, 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 2016 SAE International All rights reserved. No part of this p
3、ublication 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: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/standards.sae.org/AMS3970/2A AEROSPACE MATERIAL SPECIFICATION AMS3970/2 REV. A Issued 1999-12 Revised 2011-04 Rea
5、ffirmed 2016-12 Superseding AMS3970/2 Carbon Fiber Fabric Repair Prepreg, 120 C (250 F) Vacuum Curing Part 2 - Qualification Program for Fiber, Fabric, Carbon Prepreg, Film Adhesive and Non-Structural Glass Prepreg RATIONALE AMS3970/2A has been reaffirmed to comply with the SAE five-year review poli
6、cy. FOREWORD AMS3970/2 belongs to the Technical Specification system explained in AMS3970. TABLE OF CONTENTS 1. SCOPE 3 1.1 Field of Application 3 2. APPLICABLE DOCUMENTS 3 2.1 SAE Publications . 3 2.2 Other Publications . 3 3. DEFINITIONS . 3 4. REQUIREMENTS . 3 5. QUALIFICATION . 4 6. NOTES 4 TABL
7、E 1 MATERIAL QUALIFICATION PROGRAM FOR CARBON FIBER . 5 TABLE 2 MATERIAL QUALIFICATION PROGRAM FOR CARBON FABRIC 5 TABLE 3 COMPOSITE BATCH COMBINATIONS FOR QUALIFICATION PROGRAM . 5 TABLE 4 MATERIAL QUALIFICATION PROGRAM FOR UNCURED CARBON OR GLASS PREPREG PHYSICAL AND PHYSICO/CHEMICAL PROPERTIES 6
8、TABLE 5 MATERIAL QUALIFICATION PROGRAM FOR UNCURED FILM ADHESIVE PHYSICAL AND PHYSICO/CHEMICAL PROPERTIES . 7 TABLE 6 MATERIAL QUALIFICATION PROGRAM FOR CURED CARBON OR GLASS COMPOSITE/PHYSICAL PROPERTIES . 8 TABLE 7 MATERIAL QUALIFICATION PROGRAM FOR CURED NEAT ADHESIVE/PHYSICAL PROPERTIES . 8 TABL
9、E 8 MATERIAL QUALIFICATION PROGRAM FOR CURED CARBON COMPOSITE/PHYSICAL PROPERTIES - CURE CYCLE TOLERANCE . 9 TABLE 9 MATERIAL QUALIFICATION PROGRAM FOR COMPOSITE MAIN PROPERTIES 9TABLE 10 MATERIAL QUALIFICATION PROGRAM FOR COMPOSITE - FLUID RESISTANCE PROPERTIES . 10TABLE 11 MATERIAL QUALIFICATION P
10、ROGRAM FOR COMPOSITE/DESIGN RELATED LAMINATE PROPERTIES 10TABLE 12 MATERIAL QUALIFICATION PROGRAM FOR COMPOSITE/DESIGN RELATED JOINT PROPERTIES . 11TABLE 13 MATERIAL QUALIFICATION PROGRAM FOR COMPOSITE/SANDWICH PROPERTIES . 11TABLE 14 ADHESIVE - BONDLINE PROPERTIES 11TABLE 15 MATERIAL QUALIFICATION
11、PROGRAM FOR COMPOSITE - SHOP TRIAL AND POROSITY . 12TABLE 16A (SHEET 1 OF 2) - LAMINATE SPECIFICATION 13TABLE 16B (SHEET 2 OF 2) - LAMINATE SPECIFICATION 14TABLE 17 NOMENCLATURE OF ABBREVIATIONS 15TABLE 18 NUMBER OF SPECIMEN PER TEST 15TABLE 19 FLUID SOAKING AND HUMIDITY AGING CONDITIONS . 16TABLE 2
12、0 AUTHORIZED ANCILLARY MATERIALS 16SAE INTERNATIONAL AMS3970/2A 2 of 16_1. SCOPE AMS3970/2 gives specific information about the qualification program for carbon fiber reinforced epoxy structural repair prepreg systems, applicable for 120 C (250 F) vacuum curing. The prepreg system may include an epo
13、xy film adhesive to be applied in a co-curing process with the prepreg for joint and sandwich bonding. The need for a film adhesive shall be established during screening tests. 1.1 Field of Application This specification is only applicable to carbon fiber fabric epoxy prepreg and if necessary, assoc
14、iated epoxy film adhesive. 2. APPLICABLE DOCUMENTS The 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 specific document issue is spec
15、ified. 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 Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Ca
16、nada) or 724-776-4970 (outside USA), www.sae.org.AMS3970 Carbon Fiber Fabric Repair Prepreg, 120 C (250 F) Vacuum Curing - Part 0 - Introduction AMS3970/1 Carbon Fiber Fabric Repair Prepreg, 120 C (250 F) Vacuum Curing - Part 1 - General Requirements AMS3970/6 Carbon Fiber Fabric Repair Prepreg, 120
17、 C (250 F) Vacuum Curing - Part 6 - Carbon Fiber Fabric Reinforced Epoxy Prepreg for Repair, Plain Weave, 193 gm/m2, Adhesive Film for Repair, Non-Structural Glass Fiber fabric Reinforced Epoxy Prepreg, 105 gm/m22.2 Other Publications See the Applicable Documents Section of AMS3970/1 for reference t
18、o all other documents listed within this part specification. 3. DEFINITIONS Refer to AMS3970/1. 4. REQUIREMENTS Refer to AMS3970/1 and the relevant MS (AMS3970/6). The number of specimens per test condition is specified in Table 18. Refer to Table 17 for abbreviations used. SAE INTERNATIONAL AMS3970
19、/2A 3 of 16_5. QUALIFICATION Refer to AMS3970/1. The qualification program is given in: TABLE 1 Material Qualification Program for Carbon Fiber TABLE 2 Material Qualification Program for Carbon Fabric TABLE 3 Composite Batch Combinations for the Qualification Program TABLE 4 and TABLE 5 Material Qua
20、lification Program for Uncured Carbon or Glass Prepregs and Film Adhesive TABLE 6 through TABLE 8 Material Qualification Program for Cured Carbon or Glass Composites and Film Adhesive - Physical Properties TABLE 9 through TABLE 15 Material Qualification Program for Composite and Bonded Joints 6. NOT
21、ES 6.1 A change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the docume
22、nt, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. SAE INTERNATIONAL AMS3970/2A 4 of 16_TABLE 1 - MATERIAL QUALIFICATION PROGRAM FOR CARBON FIBER id Property Number of Batches Tested 1 Test Method1.1 Ten
23、sile Impregnated Yarn (f, f, f) - ISO 10618.2/B 21.2 Fiber Density (f) - ISO 10119/A 1.3 Filament Count - according to manufacturer 1.4 Sizing Content - ISO 10548/C 1.5 Linear Density - ISO 10120 1.6 Twist - ISO 1890 1.7 Filament Diameter - according to manufacturer 1 No qualification tests are requ
24、ired. The fiber shall be a qualified material in a prepreg used by an OEM, reference AMS3970/1. Substantiating qualification data shall be provided. 2 Normalize to 100% fiber volume. TABLE 2 - MATERIAL QUALIFICATION PROGRAM FOR CARBON FABRIC Number of Batches id Property Tested 12.1 Weaving Style an
25、d Yarn Count w2.2 Fabric Areal Mass w1 No qualification tests are required. Data from batches used in the qualification program shall be provided by the fabric manufacturer. NOTE: Test methods per AMS3970/1. TABLE 3 - COMPOSITE BATCH COMBINATIONS FOR QUALIFICATION PROGRAM Base Material Batches and B
26、atch Combinations Tested Prepreg Batch 1 2 3 Fiber Batch 1 Fi1 Fi2 Fi2 Fabric Batch 2 F1 F2 F2 Prepreg Resin Batch R1 R2 R1 Film Adhesive Batch 3 A1 A1 A1 1 It is sufficient to test one fiber batch. 2 Preferably two fabric batches (F1, F2) shall be qualifcation tested Fabric batch F1 is an acceptabl
27、e replacement for fabric batch F2. 3 For cocure specimens manufactured using a film adhesive. One film adhesive batch shall be used. SAE INTERNATIONAL AMS3970/2A 5 of 16_TABLE 4 - MATERIAL QUALIFICATION PROGRAM FOR UNCURED CARBON OR GLASS PREPREG PHYSICAL AND PHYSICO/CHEMICAL PROPERTIES id Propertie
28、s Number of Batches Test Method 14.1 Mass per Unit Area q3, s, r, p EN 2557 5, EN 2329 6 orASTM D 3776 4.2 Resin Density q1, r ISO 1183 Method A 4.3 Volatile Content q3, s, r, p EN 2558 5, EN 2330 6 orASTM D 3530 4.4 Resin Content q3, s, r, p EN 2559 5, EN 2331 6 orASTM D 3529/ASTM D 3529M 4.5 Mass
29、per Unit Area Dry Fabric q3, s, r, p EN 2559 5, EN 2331 64.6 Resin Flow q3 EN 2560 or ASTM D 3531 4.7 Tack q1 To be agreed between Manufacturer and CACRC - QPG 4.8 Viscosity Profile 2 q3, s, r, p ASTM D 4440 or EN 6043 4.9 Gel Time q3, s, r, p ASTM D 3532 or EN 6043 4.10 DSC - uncured q3, r, p EN 60
30、41 or ISO 11357-2 and -5 4.11 DSC - uncured Storage Life 3q1 EN 6041 or ISO 11357-2 and -5 4.12 DSC - uncured Work Life 4q1 EN 6041 or ISO 11357-2 and -5 4.13 HPLC q3, r, p EN 6040 or SACMA SRM 20R-94 4.14 Infrared q3, r, p ASTM E 1252 or EN 6042 1 Method for id 4.3, 4.4 and 4.6 to be agreed between
31、 Manufacturer and CACRC - QPG. 2 Viscosity profile not required for non-structural glass prepreg. 3 Requirement for qualification is in AMS3970/6 (Storage life 12 months from the date of shipment). 4 Requirement for qualification is in AMS3970/6 (Work life 10 days). 5 EN Method is for carbon fiber f
32、abric prepregs. 6 EN Method is for glass fiber fabric prepregs. NOTE: Reference Table 17 for nomenclature. SAE INTERNATIONAL AMS3970/2A 6 of 16_TABLE 5 - MATERIAL QUALIFICATION PROGRAM FOR UNCURED FILM ADHESIVE PHYSICAL AND PHYSICO/CHEMICAL PROPERTIES id Properties Number of Batches 1 Test Method 25
33、.1 Mass per Unit Area q1, s, a EN 2557 5.2 Resin Density q1, a ISO 1183 Method A 5.3 Volatile Content q1, a EN 2558 5.4 Resin Flow q1 To be defined during qualification and recorded in the Appendix of PRI QPL AMS3970 5.5 Tack q1 To be agreed between Manufacturer and CACRC - QPG 5.6 Viscosity Profile
34、 q1, s, a ASTM D 4440 or EN 6043 5.7 Gel Time q1, s, a ASTM D 3532 or EN 6043 5.8 DSC - uncured q1, a EN 6041 or ISO 11357-2 and -5 5.9 DSC - uncured Storage Life 3q1, a EN 6041 or ISO 11357-2 and -5 5.10 DSC - uncured Working Life 4q1, a EN 6041 or ISO 11357-2 and -5 5.11 HPLC q1, a EN 6040 or SACM
35、A SRM 20R-94 5.12 Infrared q1, a ASTM E 1252 or EN 6042 1 Test only to be performed if film adhesive is part of the prepreg system. 2 Method for id 5.4 and 4.6 to be agreed between Manufacturer and CACRC - QPG. 3 Requirement for qualification is in AMS3970/6 (Storage life 12 months from the date of
36、shipment). 4 Requirement for qualification is in AMS3970/6 (Work life 10 days). NOTE: Reference Table 17 for nomenclature. SAE INTERNATIONAL AMS3970/2A 7 of 16_TABLE 6 - MATERIAL QUALIFICATION PROGRAM FOR CURED CARBON OR GLASS COMPOSITE/PHYSICAL PROPERTIES id Properties Number of Batches Dry Conditi
37、on Wet Condition 6.1 Moisture Uptake 1 - q1 6.2 Extent of Cure 2 q1, s, r, p q1, s, r, p 6.3 DMA 3 q3, s, r, p q3, s, r, p 6.4 DMA 3, 4, 6 - cocure with the adhesive q1, s, a q1, s, a 6.5 DMA 3, 5 - cocure with the non-structural glass prepreg q1, s, a q1, s, a 1 Perform Moisture Uptake in accordanc
38、e with EN 3615B 85 or ASTM D 5229/D 5229 M (Procedure A, single test at 85%R.H.). 2 Perform Extent of Cure testing in accordance with EN 6064 or ISO 11357-5. 3 DMA will measure the “Storage Modulus - Onset” Tg value as defined in EN 6032, Table 1. 4 Fabricate specimen using 1 ply of prepreg system a
39、nd 1 ply of film adhesive. 5 Fabricate specimen using 1 ply of carbon prepreg system and 1 ply of glass prepreg system. 6 Testing not required for non-structural glass prepreg. NOTES: If the non-structural glass form shares the identical resin system as the structural carbon form then tests listed i
40、n this Table 6 are not required to be repeated for the non-structural glass form. Reference Table 16 for fabrication methods. Reference Table 17 for nomenclature. Reference Table 19 for aging conditions. Test methods per AMS3970/1. TABLE 7 - MATERIAL QUALIFICATION PROGRAM FOR CURED NEAT ADHESIVE/PHY
41、SICAL PROPERTIES id Properties Number of Batches 1Dry Condition Wet Condition 7.1 Moisture Uptake 2 - q1, a7.2 Extent of Cure 3 q1, a - 7.3 DMA 4 q1, a q1, a 1 Tests only to be performed if film adhesive is part of the prepreg system. 2 Perform Moisture Uptake in accordance with EN 3615B 85 or ASTM
42、D 5229/D 5229 M (Procedure A, single test at 85% R.H.). 3 Perform Extent of Cure testing in accordance with EN 6064 or ISO 11357-5. 4 DMA will measure the “Storage Modulus - Onset” Tg value as defined in EN 6032, Table 1. NOTE: Reference Table 16 for fabrication methods. Reference Table 17 for nomen
43、clature. Reference Table 19 for aging conditions. Test methods per AMS3970/1. SAE INTERNATIONAL AMS3970/2A 8 of 16_TABLE 8 - MATERIAL QUALIFICATION PROGRAM FOR CURED CARBON COMPOSITE/PHYSICAL PROPERTIES - CURE CYCLE TOLERANCE id Properties Number of Batches Maximum Cure Cycle Minimum Cure Cycle 8.1
44、Extent of Cure 1 q1 q1 1 Perform Extent of Cure testing in accordance with EN 6064 or ISO 11357-5. NOTE: Reference Table 16 for fabrication methods. Reference Table 17 for nomenclature. Reference Table 19 for aging conditions. Test methods per AMS3970/1. TABLE 9 - MATERIAL QUALIFICATION PROGRAM FOR
45、COMPOSITE MAIN PROPERTIES Number of Batches Nominal Cure Cycle Dry Condition Wet Condition id Property -55 C RT 80 C 120 C 55 C 80 C 120 C 9.1 Tensile Weft 1 q3 q3, w, p q3 q3 q3 q3, p q3 (xt,Ext, 12) 9.2 Tensile Warp - q3 - - - - - (yt,Eyt) 9.3 Compression Weft q3 q3, s w, q3, w q3 q3 q3, s w, q3,
46、s, r (xc,Exc) r, p r, p 9.4 Compression Warp - q3 q3 - - q3 - (yc,Eyc) 9.5 Tensile In-Plane q3 q3, s, r, q3 - q3 q3, r - Shear p (12, G12) 9.6 Interlaminar Shear q3 q3, s, r, q3 - - q3, r - (ILSS) Warp p (13) 1 12 to be determined on 1 batch at RT/Dry Condition only. NOTE: Reference Table 16 for fabrication methods. Reference Table 17 for nomenclature. Reference Table 19 for aging conditions. Test methods per AMS3970/1. SAE INTERNATIONAL AMS3970/2A 9 of 16_TABLE 10 - MATERIAL QUALIFICATION PROGRAM FOR COMPOSITE - FL
