【英文标准名称】:StandardGuideforEvaluatingDataAcquisitionSystemsUsedinCyclicFatigueandFractureMechanicsTesting
【原文标准名称】:评价用于周期疲劳和断裂力学试验的标准指南
【标准号】:ASTME1942-1998(2004)
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:E08.03
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:信号状况;信息率;数据偏移;断裂力学;抽样率;带宽;相位移;过滤器;量化;噪声;数据采集;阶跃响应;漂移;疲劳
【英文主题词】:bandwidth;dataacquisition;datarate;dataskew,drift;fatigue;filter;fracturemechanics;noise;phaseshift;quantization;samplerate;signalconditioning;stepresponse
【摘要】:1.1Thisguidecovershowtounderstandandminimizetheerrorsassociatedwithdataacquisitioninfatigueandfracturemechanicstestingequipment.Thisguideisnotintendedtobeusedinsteadofcertifiedtraceablecalibrationorverificationofdataacquisitionsystemswhensuchcertificationisrequired.Itdoesnotcoverstaticloadverification,forwhichtheuserisreferredtothecurrentrevisionofPracticesE4,orstaticextensometerverification,forwhichtheuserisreferredtothecurrentrevisionofPracticeE83.TheuserisalsoreferredtoPracticeE467.1.2Theoutputofthefatigueandfracturemechanicsdataacquisitionsystemsdescribedinthisguideisessentiallyastreamofdigitaldata.Suchdigitaldatamaybeconsideredtobedividedintotwotypes-BasicData,whichareasequenceofdigitalsamplesofanequivalentanalogwaveformrepresentingtheoutputoftransducersconnectedtothespecimenundertest,andDerivedData,whicharedigitalvaluesobtainedfromtheBasicDatabyapplicationofappropriatecomputationalalgorithms.ThepurposeofthisguideistoprovidemethodsthatgiveconfidencethatsuchBasicandDerivedDatadescribethepropertiesofthematerialadequately.Itdoesthisbysettingminimumormaximumtargetsforkeysystemparameters,suggestinghowtomeasuretheseparametersiftheiractualvaluesarenotknown.
【中国标准分类号】:H23
【国际标准分类号】:19_060
【页数】:12P.;A4
【正文语种】:


【英文标准名称】:Connectionsforgeneraluseandfluidpower-PortsandstudendswithISO228-1threadswithelastomericormetal-to-metalsealing-Part2:Heavy-duty(Sseries)andlight-duty(Lseries)studendswithelastomericsealing(typeE)
【原文标准名称】:通用和液压传动用连接件.带弹性体密封件或金属对金属密封件的ISO228-1螺纹开口和螺柱端头.第2部分:带弹性体密封件(E型)的重型(S系列)和轻型(L系列)螺柱端头
【标准号】:ISO1179-2-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-08
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC131
【标准类型】:()
【标准水平】:()
【中文主题词】:尺寸;弹性体;液压管路;流体技术;重型;液压传动;轻型;金属导管;管接头;管连接件;管道配件;塑料;螺纹栓塞;密封环;密封件;螺柱;测试;螺纹
【英文主题词】:Designations;Dimensions;Elastomers;Fluidcircuits;Fluidtechnology;Heavy-duty;Hydraulicfluidpower;Light-duty;Marking;Metalconduits;Pipeconnections;Pipecouplings;Pipefittings;Plastics;Screwedplugs;Sealingrings;Seals;Specification(approval);Studs;Tappedholes;Testing;Threads
【摘要】:ThispartofISO1179specifiesdimensions,performancerequirementsandtestproceduresforheavy-duty(Sseries)andlight-duty(Lseries)studendswithISO228-1threadsandtheelastomericsealing(typeE)thatisusedwiththem.Heavy-duty(Sseries)studendswithtypeEsealinginaccordancewiththispartofISO1179maybeusedatworkingpressuresupto63MPa(630bar).Light-duty(Lseries)studendswithtypeEsealinginaccordancewiththispartofISO1179maybeusedatworkingpressuresupto25MPa(250bar).Thepermissibleworkingpressuredependsuponsize,materials,design,workingconditions,application,etc.ConformancetothedimensionalinformationinthispartofISO1179doesnotguaranteeratedperformance.EachmanufacturershallperformtestingaccordingtothespecificationcontainedinthispartofISO1179toassurethatcomponentsmadetothispartofISO1179complywiththeperformanceratings.NOTE1ThispartofISO1179appliestoconnectorsdetailedinISO8434-1andISO8434-2.NOTE2TheintroductionofthispartofISO1179givesrecommendationsforportsandstudendstobeusedfornewdesignsinhydraulicandpneumaticfluidpowerapplications
【中国标准分类号】:J15
【国际标准分类号】:23_100_40
【页数】:16P.;A4
【正文语种】:英语