ASTM_E_2192_-_13.pdf

Designation:E219213Standard Guide forPlanar Flaw Height Sizing by Ultrasonics1This standard is issued under the fixed designation E2192;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 indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This guide provides tutorial information and a descrip-tion of the principles and ultrasonic examination techniques formeasuring the height of planar flaws which are open to thesurface.The practices and technology described in this stan-dard guide are intended as a reference to be used whenselecting a specific ultrasonic flaw sizing technique as well asestablishing a means for instrument standardization.21.2 This standard guide does not provide or suggest accu-racy or tolerances of the techniques described.Parameters suchas search units,examination surface conditions,materialcomposition,etc.can all have a bearing on the accuracy ofresults.It is recommended that users assess accuracy andtolerances applicable for each application.1.3 This guide does not purport to provide instruction tomeasure flaw length.1.4 This standard guide does not provide,suggest,orspecify acceptance standards.After flaw-sizing evaluation hasbeen made,the results should be applied to an appropriate codeor standard that specifies acceptance criteria.1.5 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.6 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 requirements prior to use.2.Referenced Documents2.1 ASTM Standards:3E1316 Terminology for Nondestructive ExaminationsE543 Specification for Agencies Performing NondestructiveTesting2.2ASNT Standards4SNT-TC-1A Personnel Qualification and Certification inNondestructive TestingANSI/ASNT-CP-189 Standard for Qualification and Certifi-cation of Nondestructive Testing Personnel2.3 AIA Standards5NAS-410 Nondestructive Testing Personnel Qualificationand Certification3.Terminology3.1 DefinitionsRelated terminology is defined in Termi-nology E1316.3.2 Definitions of Terms Specific to This Standard:3.2.1 corner reflectionthe reflected ultrasonic energy re-sulting from the interaction of ultrasound with the intersectionof a flaw and the component surface at essentially 90 degrees.3.2.2 doublettwo ultrasonic signals that appear on thescreen simultaneously and move in unison as search unit ismanipulated toward and away from the flaw.During tip-diffraction flaw sizing,the flaw tip signal and flaw base signal(corner reflector)will appear as a doublet.3.2.3 far-surfacethe surface of the examination pieceopposite the surface on which the search unit is placed.(Forexample,when examining pipe from the outside surface thefar-surface would be the inside pipe surface).3.2.4 focusthe term as used in this document applies todual crossed-beam search units that have been manufactured sothat they have a maximum sensitivity at a predetermined depthor sound path in the component.Focusing effect may beobtained with the use of dual-element search units having bothrefracted and roof angles applied to each element.3.2.5 near-surfacethe surface of the examination piece onwhich the search unit is placed.(For example,when examiningpipe from the outside surface the near-surface would be theoutside pipe surface).1This guide is under the jurisdiction of ASTM Committee E07 on Nondestruc-tive Testing and is the direct responsibility of Subcommittee E07.06 on UltrasonicMethod.Current edition approved June 1,2013.Published June 2013.Originallyapproved in 2002.Last previous edition approved in 2008 as E2192-08.DOI:10.1520/E2192-13.2This Standard Guide is adapted from material supplied toASTM SubcommitteeE07.06 by the Electric Power Research Institute(EPRI).3For referenced 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 fromAmerican Society for Nondestructive Testing(ASNT),P.O.Box28518,1711 Arlingate Ln.,Columbus,OH 43228-0518,http:/www.asnt.org5Available from Aerospace Industries Association of America,Inc.(AIA),1000Wilson Blvd.,Suite 1700,Arlington,VA22209-3928,http:/www.aia-aerospace.org.*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 3.2.6 sizingmeasurement of the through-wall height ordepth dimension of a discontinuity or flaw.3.2.7 30-70-70term that is applied to the technique(andsometimes the search unit)using an incident