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Product Code:SAE J1312
Title:Procedure for Mapping Engine Performance-Spark Ignition and Compression Ignition Engines
Issuing Committee:Engine Power Test Code
Scope: The purpose of this SAE code is to provide a standardized test procedure for generating engine performance maps. An engine performance map is a listing of engine fuel flow rates versus torque or power obtained at specific engine speeds and loads. Engine performance maps as specified by this code can be used in fuel economy simulation programs. This document is applicable to both four-stroke spark ignition (SI) and compression ignition (CI) engines, naturally aspirated and pressure charged, with or without charge air cooling.
Rationale: The purpose of this SAE code is to provide a standardized test procedure for generating engine performance maps. An engine performance map is a listing of engine fuel flow rates versus torque or power obtained at specific engine speeds and loads. Engine performance maps as specified by this code can be used in fuel economy simulation programs. This document is applicable to both four-stroke spark ignition (SI) and compression ignition (CI) engines, naturally aspirated and pressure charged, with or without charge air cooling.【英文标准名称】:StandardPracticeforComputedTomographic(CT)Examination
【原文标准名称】:计算机断层摄影(CT)检查的标准实施规范
【标准号】:ASTME1570-2000(2005)e1
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:E07.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:artifact;beam-hardening;computedtomography;contrast;contrastdetaildosecurves;contrastsensitivity;datastorage;densitometricimages;detectionsystem;edgeresponsefunction;field-of-view;gamma-ray;imageanalysis;imagedisplay;
【摘要】:ThispracticeisapplicableforthesystematicassessmentoftheinternalstructureofamaterialorassemblyusingCTtechnology.Thispracticemaybeusedforreviewbysystemoperators,ortoprescribeoperatingproceduresforneworroutinetestobjects.Thispracticeprovidesthebasisfortheformationofaprogramforqualitycontrolanditscontinuationthroughcalibration,standardization,referencesamples,inspectionplans,andprocedures.1.1Thispracticeisforcomputedtomography(CT),whichmaybeusedtonondestructivelydisclosephysicalfeaturesoranomalieswithinatestobjectbyprovidingradiologicaldensityandgeometricmeasurements.Thispracticeimplicitlyassumestheuseofpenetratingradiation,specificallyX-rayand-ray.1.2CTsystemsutilizeasetoftransmissionmeasurementsmadealongpathsthroughthetestobjectfrommanydifferentdirections.Eachofthetransmissionmeasurementsisdigitizedandstoredinacomputer,wheretheyaresubsequentlyreconstructedbyoneofavarietyoftechniques.AtreatmentofCTprinciplesisgiveninGuideE1441.1.3CTisbroadlyapplicabletoanymaterialortestobjectthroughwhichabeamofpenetratingradiationpasses.TheprincipaladvantageofCTisthatitprovidesdensitometric(thatis,radiologicaldensityandgeometry)imagesofthincrosssectionsthroughanobjectwithoutthestructuralsuperpositioninprojectionradiography.1.4ThispracticedescribesproceduresforperformingCTexaminations.ThispracticeistoaddressthegeneraluseofCTtechnologyandtherebyfacilitateitsuse.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificsafetystatements,seeSection,NBSHandbook114,andFederalStandards21CFR1020.40and29CFR1910.96.
【中国标准分类号】:C43
【国际标准分类号】:
【页数】:11P.;A4
【正文语种】: