SAE AIR 5567A-2010 Test Method for Catalytic Carbon Brake Disk Oxidation《刹车盘催化氧化测试方法》.pdf
《SAE AIR 5567A-2010 Test Method for Catalytic Carbon Brake Disk Oxidation《刹车盘催化氧化测试方法》.pdf》由会员分享,可在线阅读,更多相关《SAE AIR 5567A-2010 Test Method for Catalytic Carbon Brake Disk Oxidation《刹车盘催化氧化测试方法》.pdf(16页珍藏版)》请在麦多课文档分享上搜索。
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 2015 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/AIR5567A AEROSPACEINFORMATION REPORTAIR5567 REV. A Issued 2009-05 Reaffirmed 2015
5、-08 Superseding AIR5567 Test Method for Catalytic Carbon Brake Disk Oxidation RATIONALE INTRODUCTION Runway deicing chemicals are currently approved with reference to specifications AMS1431 & AMS1435. Currently these specifications do not consider the issue of runway deicer compatibility with carbon
6、-carbon composite friction materials extensively used in aircraft brakes. Carbon is hygroscopic and porous, and therefore readily absorbs liquids and contaminants. Since these chemicals were first introduced in the early 1990s chemical analysis of worn brakes has shown increasing contamination with
7、alkali metal for operators with route structures which encounter icing conditions. Contamination with alkali metal catalysts increases the rate of oxidation for a given temperature exposure to a point where the degree of oxidation may be significant even for brakes subjected to typical service condi
8、tions. The impacts of oxidation can be severe from loss of refurbishment yield to loss of friction area and reduction in disc strength to a point where drive tenons or drive lugs break and the performance of the brake can be impacted. There have been growing demands from operators and airworthiness
9、authorities for a test to assess the impact of deicing chemicals on carbon oxidation. AIR5567A has been reaffirmed to comply with the SAE five-year review policy. TABLE OF CONTENTS 1. SCOPE 32. REFERENCES 32.1 SAE Publications . 32.2 Other Applicable Documents 33. OXIDATION TEST METHOD FOR ANTI-OXID
10、ANT (AO) TREATED COUPONS 33.1 Test Coupons 33.2 Generic AO mixing instructions . 43.3 Application of Anti-oxidant Protection System: Generic AO treatment . 43.4 Contamination of coupons Various 25% w/w runway deicer solutions . 53.5 Oxidation Testing 64. OXIDATION TEST RESULTS FOR AO TREATED COUPONS
11、 74.1 Test Laboratory reporting of Results 74.2 Reporting of Results as part of AMS1431 and AMS1435 75. NOTES 8 APPENDIX APPENDIX A TEST DATA TO SUBSTANTIATE METHOD . 9APPENDIX B DEVELOPMENT HISTORY OF TEST METHOD . 10 LIST OF FIGURES FIGURE A1 ROUND ROBIN TEST DATA 9FIGURE B1 HILL AIR FORCE BASE OX
12、IDATION TEST DATA ON BARE C4000CARBON AT 700 C . 11FIGURE B2 COVENTRY OXIDATION TESTS ON BARE C4000CARBON AT 600 C 12FIGURE B3 COVENTRY OXIDATION TESTS ON BARE C4000CARBON AT 550 C 12FIGURE B4 AKRON OXIDATION TESTS ON BARE C4000CARBON AT 550 C . 13FIGURE B5 ROUND ROBIN TEST DATA ON BARE C4000SAMPLES
13、 CONTAMINATED WITH VARIOUS 25W/W% DEICERS . 14FIGURE B6 EVOLUTION OF TEST PROCEDURE . 16 LIST OF TABLES TABLE B1 AVERAGE WEIGHT LOSS DATA FOR BARE C4000 CARBON SAMPLES TESTED AT TWO LOCATIONS. 14TABLE B2 AVERAGE WEIGHT LOSS DATA FOR C4000 CARBON SAMPLES COATED WITH GENERIC AO TESTED AT TWO LOCATIONS
14、. 15TABLE B3 MEAN NORMALIZED WEIGHT LOSS DEICER CONTAMINATED COUPONS FOR C4000 CARBON SAMPLES COATED WITH GENERIC AO TESTED AT TWO LOCATIONS. . 15 SAE INTERNATIONAL AIR5567A 2 OF 161. SCOPE The scope of the test method is to provide stakeholders including fluid manufacturers, airport operators, brak
15、e manufacturers, aircraft constructors, aircraft operators and airworthiness authorities with a relative assessment of the effect of deicing chemicals on carbon oxidation. This simple test is only designed to assess the relative effects of runway deicing chemicals by measuring mass change of contami
16、nated and bare carbon samples tested under the same conditions. It is not possible to set a general acceptance threshold oxidation limit based on this test method because carbon brake stack oxidation is a function of heat sink design and the operating environment. 2. REFERENCES The following publica
17、tions form a part of this document to the extent specified herein. The latest issue of SAE publications shall apply. The applicable issue of other publications shall be the issue in effect on the date of the purchase order. In the event of conflict between the text of this document and references ci
18、ted herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, TEL: 877-606-
19、7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS1431 Compound, Solid Runway and Taxiway Deicing/Anti-Icing AMS1435 Fluid, Generic, Deicing/Anti-Icing, Runways and Taxiways AIR5490 Carbon Brake Contamination 2.2 Other Applicable Documents Available from ASTM International,
20、 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA19428-2959, TEL: 610-832-9585, www.astm.org. ASTM C1179-91 Standard Test Method for Oxidation Mass Loss of Manufactured Carbon and Graphite Materials in Air 3. OXIDATION TEST METHOD FOR ANTI-OXIDANT (AO) TREATED COUPONS 3.1 Test Coupons a.
21、Material: Carbon/carbon composite brake material CARBENIX4000 (C4000), Honeywell Aircraft Landing Systems, 3520 Westmoor Street, South Bend, IN 46628, United States. (Note: C4000was agreed by all brake manufactures to be a suitable material which would give results representative of all carbon-carbo
22、n brake manufacturers materials. Alternate carbon materials/sources may be available in the future.) b. Configuration: Right cylinder cut from production aircraft brake discs. Dimensions, 49.911 0.127 mm, (1.965 0.005 inch) diameter, orientated parallel to the wear face of the as manufactured produc
23、tion brake discs and, 5.969 0.127 mm (0.235 0.005 inch) long, orientated through the thickness of the disc. Note no lubricants to be used during machining. Honeywell drawing number AX-36536. Coupon weight as supplied to be 19.800+/- 0.500 g. (Weight limits based on Honeywell C4000. Note alternative
24、carbon sources will require different weight specification limits. c. Identification Coupons will be supplied with unique engraved identification numbers. d. At all times coupons will be handled using single use vinyl or lint-free nylon gloves. e. Coupons will be ultrasonic cleaned, by the test hous
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 1人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- SAEAIR5567A2010TESTMETHODFORCATALYTICCARBONBRAKEDISKOXIDATION 刹车 催化 氧化 测试 方法 PDF

链接地址:http://www.mydoc123.com/p-1020279.html