Product Code:SAE AMS6292
Title:Steel Bars and Forgings, Carburizing, 1.8Ni - 0.25Mo (0.15 - 0.20C) (SAE 4617)
Issuing Committee:Ams E Carbon And Low Alloy Steels Committee
Scope: This specification covers an aircraft-quality, low-alloy steel in the form of bars, forgings, and forging stock. Primarily for carburized parts which require intermediate minimum core hardness and allow wide hardness range in sections 0.25 in. (6 mm) and under in nominal thickness. The core may or may not be machinable after hardening. Alloy: 4617 UNS Number: G46170【英文标准名称】:StandardTestMethodforPrimaryCalibrationofAcousticEmissionSensors
【原文标准名称】:声发射传感器一次校准的标准试验方法
【标准号】:ASTME1106-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E07.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:声学设备;声学;校准;发射;无损检验;传感器;试验设备;测试
【英文主题词】:absolutecalibration;acousticemissionsensor;breakingcapillary;capacitivetransducer;nondestructivetesting;surfacewave;transferstandard
【摘要】:TransferStandards8212;OnepurposeofthistestmethodisforthedirectcalibrationofdisplacementtransducersforuseassecondarystandardsforthecalibrationofAEsensorsforuseinnondestructiveevaluation.Forthispurpose,thetransferstandardshouldbehighfidelityandverywellbehavedandunderstood.Ifthiscanbeestablished,thestatedaccuracyshouldapplyoverthefullfrequencyrangeupto1MHz.Note18212;Thestatedaccuracyappliesonlyifthetransferstandardreturnstoquiescence,followingthetransientinput,beforeanywavereflectedfromtheboundaryofthecalibrationblockreturnstothetransferstandard(8764;100x03BC;s).Forlowfrequencieswithperiodsontheorderofthetimewindow,thisconditionisproblematicaltoprove.ApplicationsSensors8212;ThistestmethodmayalsobeusedforthecalibrationofAEsensorsforuseinnondestructiveevaluation.Someofthesesensorsarelesswellbehavedthandevicessuitableforatransferstandard.Thestatedaccuracyforsuchdevicesappliesintherangeof100kHzto1MHzandwithlessaccuracybelow100kHz.1.1Thistestmethodcoverstherequirementsfortheabsolutecalibrationofacousticemission(AE)sensors.Thecalibrationyieldsthefrequencyresponseofatransducertowaves,atasurface,ofthetypenormallyencounteredinacousticemissionwork.Thetransducervoltageresponseisdeterminedatdiscretefrequencyintervalsofapproximately10kHzupto1MHz.Theinputisagivenwell-establisheddynamicdisplacementnormaltothemountingsurface.Theunitsofthecalibrationareoutputvoltageperunitmechanicalinput(displacement,velocity,oracceleration).Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N65
【国际标准分类号】:17_140_01
【页数】:11P.;A4
【正文语种】: