1、Designation:E266911Standard Digital Reference Images forTitanium Castings1This standard is issued under the fixed designation E2669;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses ind
2、icates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 The digital reference images provided in the adjunct tothis standard illustrate various types and degrees of disconti-nuities occurring in titanium castings.2Use o
3、f this standard forthe specification or grading of castings requires procurement ofthe adjunct digital reference images,which illustrate thediscontinuity types and severity levels.They are intended toprovide the following:1.1.1 A guide enabling recognition of titanium castingdiscontinuities and thei
4、r differentiation both as to type anddegree through digital radiographic examination.1.1.2 Example digital radiographic illustrations of disconti-nuities and a nomenclature for reference in acceptancestandards,specifications and drawings.1.2 The digital reference images consist of seventeen digitalf
5、iles each illustrating eight grades of increasing severity.Thefiles illustrate seven common discontinuity types representingcasting sections up to 1-in.(25.4-mm).1.3 The reference radiographs were developed for castingsections up to 1 in.(25.4 mm)in thickness.1.4 All areas of this standard may be op
6、en to agreementbetween the cognizant engineering organization and thesupplier,or specific direction from the cognizant engineeringorganization.These items should be addressed in the purchaseorder or the contract.NOTE1The digital reference images are available from ASTMInternational Headquarters.Orde
7、r number RRE2669.Each of the digitalreference images contain an image of a step wedge and two duplex-wiregauges.Refer to Practice E2002 for wire pair details.1.5 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI unit
8、s that are provided for information onlyand are not considered standard.1.6 These digital reference images are not intended toillustrate the types or degrees of discontinuities when perform-ing film radiography.If performing film radiography of tita-nium castings,refer to Reference Radiographs E1320
9、.1.7 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.1.8 Only licensed
10、 copies of the software and images shall beutilized for production inspection.A copy of the ASTM/Userlicense agreement shall be kept on file for audit purposes.2.Referenced Documents2.1 ASTM Standards:3E94 Guide for Radiographic ExaminationE1025 Practice for Design,Manufacture,and MaterialGrouping C
11、lassification of Hole-Type Image Quality In-dicators(IQI)Used for RadiologyE1316 Terminology for Nondestructive ExaminationsE1320 Reference Radiographs for Titanium CastingsE2002 Practice for Determining Total Image Unsharpness inRadiologyE2597 Practice for Manufacturing Characterization of Digi-tal
12、 Detector Arrays2.2 SMPTE Practice:4RP1332.3 ASTM Adjuncts:Digital Reference Images of Investment Steel Castings forAerospace Applications53.Terminology3.1 DefinitionsDefinitions of terms used in this standardmay be found in Terminology E1316.3.2 Definitions of Terms Specific to This Standard:1This
13、standard is under the jurisdiction of ASTM Committee E07 on Nonde-structive Testing and is the direct responsibility of Subcommittee E07.02 onReference Radiological Images.Current edition approved Dec.1,2011.Published December 2011.Originallyapproved in 2010.Last previous edition approved in 2010 as
14、 E2669-10.DOI:10.1520/E2669-11.2The digital reference images are considered to be applicable to all titaniumcastings,requiring close tolerances.Castings for which these images are applicablegenerally include those made by the lost wax,frozen mercury,ceramicast or shellmold processes.3For referenced
15、ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4Available from Society of Motion Picture and Television Engineers,3 BarkerAvenue,
16、White Plains,NY 10601;or www.smpte.org/smpte_store/5Available from ASTM International Headquarters.Order Adjunct No.RRE2669.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.2.1 The terms relating to discontinuities used in thesedigital reference images are described based upon radiographicappearance when viewed in the negative polarity such that theimages appear in the