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 2013 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:/www.sae.org/technical/standards/AMS2950/1 AEROSPACE MATERIAL SPECIFICATION AMS2950/1 Issued 2008-06 Reaffirmed 20
5、14-02 Paste Adhesive for Core Restoration Part 1 - General Requirements RATIONALE AMS2950/1 has been reaffirmed to comply with the SAE five year review policy. FOREWORD This Technical Specification is prepared by the Air Transport Association/International Air Transport Association/Society of Automo
6、tive Engineers, Inc. (ATA/IATA/SAE) Commercial Aircraft Composite Repair Committee - Repair Material Task Group (CACRC-RMTG). The purpose of this specification is to obtain a common Technical Specification for the paste adhesives for core restoration in repairs of fiber reinforced composite componen
7、ts conforming to the requirements of the Original Equipment Manufacturers (OEM). TABLE OF CONTENTS 1. SCOPE 3 2. APPLICABLE DOCUMENTS 3 2.1 SAE Publications. 3 2.2 ASTM Publications 3 2.3 EN Publications. 4 2.4 ISO Publications 4 2.5 PRI Publications 4 2.6 SACMA Publications. 4 3. DEFINITIONS . 5 3.
8、1 General . 5 3.2 Specific Definitions 5 4. REQUIREMENTS . 5 4.1 General Requirements 5 4.1.1 Qualification 5 4.1.2 Process Control Document. 5 4.1.3 Traceability 5 4.1.4 Health and Safety Requirements 6 4.1.5 Manufacturers Responsibility. 6 4.1.6 Quality Assurance. 6 4.2 Technical Requirements . 6
9、4.2.1 General . 6 4.2.2 Specific 6 5. QUALIFICATION. 13 5.1 Organizations Involved . 13 5.2 Introduction . 13 5.3 Material Qualification 13 5.3.1 General . 13 5.3.2 Screening of a Material . 13 5.3.3 Qualification of Material 14 SAE INTERNATIONAL AMS2950/1 Page 2 of 23 5.3.4 Audit of a Manufacturer.
10、 14 5.3.5 Establishment of an IPS 14 5.4 Material Qualification Program 14 5.4.1 Qualification Retests . 15 5.4.2 Qualification Test Report 15 5.5 Side Qualification and Requalification 15 5.6 Material Safety Data Sheet . 15 5.7 Evaluation of Test Data. 15 6. RELEASE 15 6.1 General . 15 6.2 Release
11、Testing 16 6.3 Release Test Certificate 16 6.4 Capability Clause 16 6.5 Re-testing and Rejection. 16 6.5.1 Re-testing 16 6.5.2 Rejection . 17 6.6 Warranty 17 6.7 Audit 17 7. PREPARATION FOR DELIVERY. 17 7.1 Packing . 17 7.2 Marking . 17 7.3 Storage and Shipment 18 8. NOTES 18 FIGURE 1 TYPICAL CURVE
12、DUE TO AN EXOTHERMIC REACTION 9 FIGURE 2 FLATWISE TENSILE TEST SPECIMEN (BOND TO THE PRECURED PARENT LAMINATE) . 10 FIGURE 3 FLATWISE TENSILE TEST SPECIMEN WITH WET LAY-UP REPAIR PLIES PRI-QPL-AMS2980. 12 FIGURE 4 HUMIDITY AGEING PROCEDURE 12 TABLE 1 CUPS FOR EXOTHERMICITY TESTS 8 TABLE 2 TYPES OF P
13、RECURED LAMINATES TO BE TESTED 11 TABLE 3 QUALIFICATION TESTING FOR STORAGE AND WORK LIFE (ONLY ONE BATCH) . 19 TABLE 4 QUALIFICATION TESTING FOR APPLICATION AND CURING OF THE ADHESIVE PASTE (ONLY ONE BATCH) . 19 TABLE 5 PHYSICAL/CHEMICAL TESTING, QUALIFICATION PROGRAMME (Q), SCREENING (S) AND BATCH
14、 RELEASE (C) 20 TABLE 6 PHYSICAL AND MECHANICAL TESTING, QUALIFICATION PROGRAMME FOR PASTE ADHESIVE IN CURED CONDITION (1)21 TABLE 7 PHYSICAL AND MECHANICAL TESTING, SCREENING (S) AND BATCH RELEASE (C) FOR PASTE ADHESIVE IN CURED CONDITION (1). 22 TABLE 8 ACRONYMS . 23 SAE INTERNATIONAL AMS2950/1 Pa
15、ge 3 of 23 1. SCOPE This Technical Specification gives information about technical requirements and qualification procedures of adhesive paste with or without thickening agent for core restoration of aircraft components. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the d
16、ate 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 specified. When the referenced document has been cancelled and no superseding document has been specified, the
17、 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 (9nside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS2980/1 Carbon Fiber Fabric and Epoxy Resin Wet Lay-Up
18、 Repair Material, Part 1 - General Requirements AMS2980/5 Carbon Fiber Fabric and Epoxy Resin Wet Lay-Up Repair Material, Part 5 - Material Specification: Carbon Fiber Fabrics, Plain Weave, 193 g/m2, and Epoxy Resin AIR4844 Composites and Metal Bonding Glossary. 2.2 ASTM Publications Available from
19、ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM C 297/C 297M Standard test method for flatwise tensile strength of sandwich constructions ASTM D 1875 Standard test methods for density of adhesives in fluid form ASTM D
20、2202 Standard test method for slump of sealants ASTM D 2471 Standard test methods for gel time and peak exothermic temperature of reacting thermosetting resins. ASTM D 2896 Standard test methods for base number of petroleum products by potentiometric perchloric acid titration ASTM D 4440 Standard te
21、st methods for plastics: dynamic mechanical properties: melt rheology ASTM D 5229/D 5229 M Standard test methods for moisture absorption properties and equilibrium conditioning of polymer matrix composite materials ASTM E 203 Standard test method for water using Karl Fisher reagent ASTM E 1252 Stand
22、ard test method for general techniques for obtaining infrared spectra for qualitative analysis. ASTM E 1640 Standard test methods for assignment of the glass transition temperatures by dynamic mechanical analysis. SAE INTERNATIONAL AMS2950/1 Page 4 of 23 2.3 EN Publications Available from CEN-comit,
23、 Europen de Normalisation, Secretariat Central, Rue de Stassart 36, B-1050 Bruxelles, Belgium. EN 542 Adhesives-Determination of density EN 2667-2 Aerospace series - Non-metallic materials. Foaming structural adhesives. Test methods. Part 2: Compressive tube shear EN 2823 Aerospace series - Test met
24、hod for the determination of the effect of exposure to humid atmosphere on physical and mechanical characteristics - Fibre reinforced plastics. EN 6032 Aerospace series - Fibre reinforced plastics. Test method. Determination of the glass transition temperatures. EN 6040 Analysis of thermoset systems
25、 by High Performance Liquid Chromatography EN 6041 Aerospace series - Analysis of non metallic materials by Differential Scanning Calorimetry EN 6042 Aerospace series - Determination of organic compounds by infrared spectroscopy EN 6043 Aerospace series - Determination of gel time and viscosity of m
26、atrix resins EN 6062 Aerospace series - Test method. Flatwise tensile test of composite sandwich panel EN 6064 Aerospace series - Fibre reinforced plastics. Test method. Determination of the extent of cure by Differential Scanning Calorimetry. 2.4 ISO Publications Available from International Organi
27、zation for Standardization, 1, rue de Varembe, Case postale 56, CH-1211 Geneva 20, Switzerland, Tel: +41-22-749-01-11, www.iso.org. ISO 472 Plastic - Vocabulary ISO 604 Determination of compression characteristics ISO 760 Determination of water. Karl Fisher method (general method) ISO 2555 Resins in
28、 the liquid state or as emulsions or dispersions. Determination of apparent viscosity by the Brookfield test method ISO 9000 Quality management systems Fundamentals and vocabulary (ISO 9000:2005) ISO 11357-2 Plastics-Differential scanning calorimetry (DSC) Part 5: Determination of glass transition t
29、emperature ISO 11357-5 Plastics-Differential scanning calorimetry (DSC) Part 5: Determination of characteristic reaction curve, temperatures and times, enthalpy of reaction and degree of conversion 2.5 PRI Publications Available from Performance Review Institute, 161 Thorn Hill Road, Warrendale PA 1
30、5086-7527, Tel: 724-772-1616, www.pri-network.org. PD 2000 Governance and administration of an industry managed product qualification program PD 2001 Manufacturer request for product approval and qualification process PRI-QPL-AMS2950 Qualified product list of AMS2950 PRI-QPL-AMS2980 Qualified produc
31、t list of AMS2980 2.6 SACMA Publications Available from Suppliers of Advanced Composite Materials Association, 1600 Wilson Boulevard, Suite 1008, Arlington, VA 22209. SRM 20R-94 High performance liquid chromatography of thermoset resins SAE INTERNATIONAL AMS2950/1 Page 5 of 23 3. DEFINITIONS 3.1 Gen
32、eral For the purpose of this standard the definitions in ISO 472 apply with the following additions or modifications. For further definitions or explanation of terms, refer to AIR4844. 3.2 Specific Definitions BATCH: A quantity of adhesive paste produced in a single run or shift in continuous operat
33、ions using the same batches of raw materials. LOT: A lot shall consist of all the adhesive paste from one batch received in one shipment. The size of the lot refers to the total number of units in the lot. UNIT: A unit refers to the smallest single portion of adhesive in any lot, e.g., one container
34、 of base and hardener. STORAGE LIFE: The period of time during which the adhesive paste when stored in accordance with the IPS will meet the requirements of this TS and the IPS. WORK LIFE: The period time at shop conditions 15 to 30 C and 25 to 75% relative humidity during which the adhesive paste,
35、when in open containers (one-part-systems) or when mixed (two-part-system), is usable as intended, and once cured will meet the requirements of this TS and the IPS. FILLER: A material that may be added to the resin or hardener to improve the characteristics of the adhesive. THICKENING AGENT: A mater
36、ial that may be added to the paste adhesive to increase the viscosity (Aerosil or Cab-O-Sil). 4. REQUIREMENTS 4.1 General Requirements 4.1.1 Qualification All products sold to this specification shall be listed, or approved for listing, on the qualified products list PRI-QPL-AMS2950. The qualified p
37、roducts list shall be in accordance with PD 2000. 4.1.2 Process Control Document Prior to manufacturing the first Qualification adhesive batch, the manufacturer shall have established the PCD. The PCD shall be presented to the CACRC-QPG upon request. CACRC-QPG shall treat any information contained i
38、n the PCD as confidential. Changes to the PCD of a qualified material are subject to the written approval of the CACRC-QPG in accordance with PD 2000. Such changes may require side qualification. The batch release test report for the first delivery made after any change to the PCD shall contain a re
39、ference to the change. 4.1.3 Traceability Each individual material shall be identifiable at all stages of manufacture and delivery. The materials manufacturer shall present evidence of the materials traceability upon request. SAE INTERNATIONAL AMS2950/1 Page 6 of 23 4.1.4 Health and Safety Requireme
40、nts The delivered adhesive shall fulfill the local requirements of the health and safety laws of the country of the purchaser. In processing the material in the composite shop, the adhesive shall not cause any health problems or cause an emission that requires special measures to be taken to protect
41、 the environment. The manufacturer shall inform the purchaser regarding safe handling procedures of the material. The adhesive formulation given to the CACRC-QPG during qualification shall also be inspected for health and safety requirements. 4.1.5 Manufacturers Responsibility The manufacturer is re
42、sponsible for the development and manufacture of any material submitted in accordance with this TS. Quality control by the manufacturer shall be in accordance with this TS. The materials manufacturer commits itself to supply a qualified material for a minimum of ten years. Adjustment of manufacturin
43、g techniques and/or procedures to the state of the art technology is the manufacturers responsibility and may require requalification to this specification. 4.1.6 Quality Assurance The manufacturers quality system shall be approved as defined in ISO 9000 or equivalent. 4.2 Technical Requirements 4.2
44、.1 General The product shall fulfill the requirements of the relevant MS and IPS. 4.2.2 Specific 4.2.2.1 Nominal Process Parameters for Qualification Two types: 1 - The adhesive paste shall be resin based and supplied as one part or two parts. The type of resin shall be specified in the relevant IPS
45、. 2 - Resin with thickening agent. The rate of the thickening agent shall be specified in the relevant IPS. In the case of two-part adhesive paste/resin with thickening agent, the manufacturer shall provide mixing information. Prior to qualification the manufacturer and the CACRC-QPG shall agree upo
46、n the nominal blending proportions of the two parts, the blending instructions and the nominal cure cycle, see 4.2.2.3 and 4.2.2.4. The nominal process parameters shall be specified in the IPS. Cure cycles and blending ratios not tested in accordance with this TS are non-qualified process parameters
47、 and shall not be mentioned in the IPS. 4.2.2.2 Appearance For two-part adhesive paste, each component of the resin system shall be homogeneous material and shall meet the requirements of the MS. SAE INTERNATIONAL AMS2950/1 Page 7 of 23 4.2.2.3 Blending The manufacturer shall provide mixing informat
48、ion with two part adhesive pastes. The mixing ratio of the parts shall be expressed as the number of parts, by mass, of the hardener that shall be mixed with 100 parts of the base. During hand or automatic mixing, the two parts shall blend readily in a short time defined in the relevant IPS to produ
49、ce a uniform paste of a consistency suitable for application. The work life of the mixed adhesive shall meet the requirements of the relevant IPS. 4.2.2.4 Cure The adhesive shall cure satisfactorily under the conditions specified in the IPS. Once cured in such conditions, the adhesive shall meet all the applicable requirements of this TS and the relevant MS. 4.2.2.5 Water Content The resin manufacturer shall recommend a maximum wa
