ASTM_E_2534_-_10.pdf

Designation:E253410Standard Practice forProcess Compensated Resonance Testing Via Swept SineInput for Metallic and Non-Metallic Parts1This standard is issued under the fixed designation E2534;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.Scope1.1 This practice describes a general procedure for using theprocess compensated resonance testing(PCRT)via swept sineinput method to identify metallic and non-metallic partsresonant pattern differences that can be used to indentify partswith anomalies causing deficiencies in the expected perfor-mance of the part in service.This practice is intended for usewith instruments capable of exciting,measuring,recording,and analyzing multiple whole body mechanical vibrationresonant frequencies within parts exhibiting acoustical ringingin the audio,or ultrasonic,resonant frequency ranges,or both.PCRT is used in the presence of manufacturing processvariance to distinguish acceptable parts from those containingsignificant anomalies in physical characteristics expected tosignificantly alter the performance.Such physical characteris-tics include,but are not limited to,cracks,voids,porosity,shrink,inclusions,discontinuities,grain and crystalline struc-ture differences,density related anomalies,heat treatmentvariations,material elastic properties differences,residualstress,and dimensional variations.1.2 This practice uses inch pound units as primary units.SIunits are included in parentheses for reference only,and aremathematical conversions of the primary units.1.3 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.2.Referenced Documents2.1 ASTM Standards:2E1316 Terminology for Nondestructive ExaminationsE2001 Guide for Resonant Ultrasound Spectroscopy forDefect Detection in Both Metallic and Non-metallic Parts3.Terminology3.1 Definitions:The definitions of terms relating to conventional ultrasonicexamination can be found in Terminology E1316.3.2 Definitions of Terms Specific to This Standard:3.2.1 resonant ultrasound spectroscopy(RUS)Basic RUS(1)3was originally applied in fundamental research applica-tions in physics and materials science.A few other recogniz-able names include acoustic resonance spectroscopy,acousticresonant inspection,and resonant inspection.Guide E2001documents RUS extensively.A nondestructive examinationmethod that employs the measurement and analysis ofacoustic,or ultrasound resonance patterns,or both,for theidentification of acceptable variations in the physical charac-teristics of test parts in production environments.In thisprocedure an isolated,rigid part is caused to resonate.Certainresonances are measured and compared to a previously definedacceptable pattern combination of resonances.Based on thiscomparison,the part is judged to be acceptable or,if it does notconform to the established pattern,unacceptable.3.2.2 process compensated resonant testing(PCRT)a non-destructive examination method which is an enhancement toRUS providing greater ability to identify resonant frequencyshifts due to flaws and unacceptable variations in componentsin the presence of acceptable resonant frequency shifts ac-countable to normal manufacturing process variations.Theprocess employs the measurement and analysis of acoustic orultrasound,or both resonance patterns for the identification ofunacceptable variations in the physical properties of examinedparts in production environments.In classic RUS,this proce-dure in an isolated,rigid part is caused to resonate.resonancesare measured and compared to a previously defined acceptablepattern of resonances.Based on this comparison the part isjudged to be acceptable or,if it does not conform to theestablished pattern,to be,by default,unacceptable.1This practice is under the jurisdiction of ASTM Committee E07 on Nonde-structive Testing and is the direct responsibility of Subcommittee E07.06 onUltrasonic Method.CurrenteditionapprovedMarch1,2010.PublishedMarch2010.DOI:10.1520 E2534-102For 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.3The boldface numbers in parentheses refer to a list of references at the end ofthis practice.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.2.3 teaching seta group of like components includingexamples of known acceptable and known unacceptable com-ponents representative of the range of acceptable