SAE J 3001-2011 Brake Insulator Damping Measurement Procedure《制动器绝缘体阻尼测量规程》.pdf
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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 reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2011 SAE International All rights reserved. No part of this publication m
3、ay 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: +1 724-776-4970 (outside U
4、SA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visit http:/www.sae.org/technical/standards/J3001_201102SURFACEVEHICLERECOMMENDEDPRACTICEJ3001 FEB2011 Issued 2011-02 Brake Insulator Dampi
5、ng Measurement Procedure RATIONALE Brake pad insulators are a primary device used in the control of brake squeal for passenger cars throughout the world. Each insulator damping is tuned for a specific application. Because there is currently no recognized standard for measuring insulator damping, the
6、 SAE Brake NVH Standards Committee identified the need to establish a measurement standard that would allow one to accurately and consistently measure insulator damping. 1. SCOPE This procedure is applicable to modes between 1500 and 15 000 Hz. The parameters measured with this procedure are defined
7、 as the damping factor, for first three bending modes of the beam. The procedure will focus on bending modes only.1.1 Purpose This SAE Recommended Practice is intended to establish a standardized and repeatable method for performing damping measurements on a brake insulator. 2. REFERENCES 2.1 Relate
8、d Publications The following publications are provided for information purposes and are not a required part of this SAE Technical Report. D. J. Ewins, Modal Testing - Theory, Practice and Application, Second Edition, 2000, Research Studies Press LTD, England B single degree of freedom identification
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