1、DIGITAL APPROVALSYSTEMSASME Y14.42-2002DIGITAL APPROVALSYSTEMSAn American National StandardEngineering Drawing and RelatedDocumentation PracticesEngineering Drawing and RelatedDocumentation PracticesAn American National StandardASME Y14.42-2002Copyrighted material licensed to Stanford University by
2、Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.ASME Y14.42ADOPTION NOTICEASME Y14.42,Digital Approval Systems,was adopted on 11 November 2002 for use by the Department of Defense,DoD.Proposed c
3、hanges by DoD activities must be submitted to the DoD Adopting Activity:Commander,U.S.Army TACOM-ARDEC,ATTN:AMSTA-AR-QAW-E,Picatinny Arsenal,NJ 07806-5000.Copies of this documentmay be purchased from The American Society of Mechanical Engineers(ASME),22 Law Drive,PO Box 2900,Fairfield,NJ 07007-2900;
4、http:/www.asme.org.Custodians:Adopting Activity:Army ARArmy ARNavy SAAir Force 16(Project DRPR 0366)DLA DHReview Activities:Army AT,AV,CE,CR,EA,GL,MI,SM,TENavy AS,CH,EC,MC,OS,SH,TD,YDAir Force 11,13,19,68,70,71,84,99DLA CC,GS,ISNSA NSAMSC N/AAREA DRPRDISTRIBUTION STATEMENT A.Approved for public rele
5、ase;distribution is unlimited.Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.ANAMERICANNATIONALSTANDARDDIGITALAPPROVALSYSTEMSASMEY14.42-2
6、002Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.Date of Issuance:April 11,2003This Standard will be revised when the Society approves t
7、he issuance of a new edition.There willbe no addenda or written interpretations of the requirements of this Standard issued to this edition.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the
8、criteria for American NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate.The proposed code or standard was madeavailable forpublic review andcomment thatprov
9、ides an opportunityfor additional publicinput from industry,academia,regulatory agencies,and the public-at-large.ASME does not“approve,”“rate,”or“endorse”any item,construction,proprietary device,or activity.ASME does not take any position with respect to the validity of any patent rights asserted in
10、 connection with anyitems mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent,nor assumes any such liability.Users of a code or standard are expresslyadvised that determination of the validity of a
11、ny such patent rights,and the risk of infringement of such rights,isentirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibili
12、ty for only those interpretations of this document issued in accordance with the establishedASME procedures and policies,which precludes the issuance of interpretations by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the pr
13、ior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2003 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyrighted material licensed to Stanford University by Thomson Scientific(),do
14、wnloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.CONTENTSForeword.ivStandards Committee Roster.v1General.11.1Scope.11.2References.11.3Definitions.12Requirements.12.1Approval Indicator.12.2Authentication and Verificatio
15、n of Approval Indicators.22.3Security.22.4Revisions.3iiiCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.FOREWORDSince the first national s
16、tandard for engineering drawings,Standards for Cross-Sections,was published by ASME in 1914,the field of engineering documentation has steadily becomeincreasingly versatile and sophisticated.Digital approval systems are now part of the new worldof engineering documents that includes the use of computers and digital modeling applicationsand techniques.This is the first standard on digital approval systems for engineering documen-tation.The U.S.government and industry are encouraging the active de
