标准资料网-标准资料免费资源平台

【英文标准名称】:Vibrationinhand-heldtools—Vibrationmeasurementmethodsforgrinders—Evaluationofround-robintest
【原文标准名称】:手持工具的振动.研磨机振动测量方法.系列试验评估
【标准号】:ISO/TR27609-2007
【标准状态】:现行
【国别】:国际
【发布日期】:
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:研磨机;磨削;砂轮;手工工具;搬运;测量;测量技术;普通控制系统;动力驱动;环形试验;规范(验收);测试;工具;振动;振动影响(对人体);振动测量;抗震试验;振动试验
【英文主题词】:Grinders;Grinding;Grindingwheels;Handtools;Handling;Measurement;Measuringtechniques;Pedestrian-controlledsystems;Powerdrives;Ringtests;Specification(approval);Testing;Tools;Vibration;Vibrationeffects(humanbody);Vibrationmeasurement;Vibrationresistancetests;Vibrationtests
【摘要】:ThisTechnicalReportpresentsanevaluationofaround-robintestofvibrationmeasurementmethodsfordeterminingvibrationinhand-heldgrinders.Theaimoftheround-robintestwastoestablishatestmethodthatcouldmeettherequirementofISO20643formeasurementofvibrationemissionsinthreedirections,foraccordancewiththeplanned-to-be-revisedISO8662-4.Thevalueobtainedbysuchatestmethodmustcorrespondtothehighestvibrationvalueslikelytooccurundertypicalandnormalworkingconditionsofthemachine,i.e.theupperquartileofthevibrationinrealuse.Thisacknowledgesthattheupperboundaryof“typicalandnormal”conditionscanbeexceededbysomeconditionsof“realuse”.Vibrationatgrindingcanmainlybedividedintovibrationcausedbyunbalanceofthegrindingwheelandprocessvibrationgeneratedbythecontactbetweenthegrindingwheelandtheworkpiece.TheunbalanceparthasbeenshowntobethegreaterofthetwoandISO8662-4isbasedonthis.InthisTechnicalReport,thetestmethodconsistsofanumberofaveragedmeasurementsusinganunbalancedisc,withanunbalancecorrespondingtotheupperlimitoftheunbalancesfoundamongrealgrindingwheels.WhereasISO8662-4coversalltypesofhand-heldgrinders,theround-robintestpresentedinthisTechnicalReportwasbasedongrindingwithdepressedcentre-wheels,oneofthemostcommongrindingapplications.
【中国标准分类号】:Z32
【国际标准分类号】:13_160;25_140_10
【页数】:36P.;A4
【正文语种】:英语


【英文标准名称】:TestMethodforMicroscopicalDeterminationoftheReflectanceofVitriniteinaPolishedSpecimenofCoal
【原文标准名称】:亮煤样品中有机组份反射比的显微测定方法
【标准号】:ASTMD2798-1995
【标准状态】:作废
【国别】:美国
【发布日期】:1995
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:反射比测定;测定;煤;燃料;试样;固体燃料
【英文主题词】:reflectancemeasurement;coal;solidfuels;determination;fuels;testspecimens
【摘要】:
【中国标准分类号】:D21
【国际标准分类号】:71_060_10
【页数】:
【正文语种】:英语