【英文标准名称】:StandardTestMethodsforNondestructiveEvaluationofWood-BasedFlexuralMembersUsingTransverseVibration
【原文标准名称】:利用横向振动无损评定木基受弯构件的标准试验方法
【标准号】:ASTMD6874-2003(2009)e1
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:D07.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Transversetesting;Wood-basedmaterials/applications;Nondestructiveevaluation(NDE)
【摘要】:Thedynamicmodulusofelasticityprovidedbythesetestmethodsisafundamentalpropertyfortheconfigurationtested.Thisvaluecanberelatedtostaticandotherdynamicmoduliofelasticityasmeasuredonthesameconfiguration.Therapidityandeaseofapplicationofthesetestmethodsfacilitateitsuseasasubstituteforstaticmeasurements.Dynamicmodulusofelasticityisoftenusedforsurveys,forsegregationoflumberfortestpurposes,andtoprovideindicationofenvironmentalorprocessingeffect.Themodulusofelasticity,whethermeasuredstaticallyordynamically,isoftenausefulpredictorvariabletosuggestorexplainpropertyrelationships.1.1Thesetestmethodscoverthedeterminationoftheflexuralstiffnessandmodulusofelasticitypropertiesofwood-basedmaterialsbynondestructivetestingusingtransversevibrationintheverticaldirection.1.2Thetestmethodsarelimitedtospecimenshavingsolid,rectangularsections.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P23
【国际标准分类号】:19_100
【页数】:8P.;A4
【正文语种】:英语


【英文标准名称】:Magnetictapesoundrecordingandreproducingsystems.Part3:Methodsofmeasuringthecharacteristicsofrecordingandreproducingequipmentforsoundonmagnetictape
【原文标准名称】:磁带录音和重放系统第3部分:磁带录音和放音设备特性的测量方法修改2
【标准号】:IEC60094-3AMD2-1988
【标准状态】:现行
【国别】:国际
【发布日期】:1988
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC100
【标准类型】:()
【标准水平】:()
【中文主题词】:仪器;作标记;磁带;记录系统;磁带录音机;接口;电子工程;质量;测量技术;测量;放声;磁记录机;录音;录音;电气工程;记录工程;磁带记录;磁带技术;速度控制;录音磁带;重放设备;特性;速度;定义;窄条带材;X射线发生器
【英文主题词】:Acoustoelectricdevices;Audiotapes;Definitions;Electricalengineering;Electronicengineering;Instruments;Interfaces(dataprocessing);Magneticrecorders;Magneticrecording;Magnetictaperecordings;Magnetictapetechniques;Magnetictapes;Marking;Measurement;Measurementconditions;Measuringtechniques;Properties;Quality;Recordingengineering;Recordingequipment;Recordingsystems;Reels;Reproductingequipment;Soundheads;Soundrecording;Soundreproduction;Spools;Tape;Taperecorders;Tracks;Velocity;Velocitycontrol;X-raygenerator
【摘要】:Includesthetextofamendments1and2.Thetextofamendment2canbedistinguishedbyaverticallineinthemarginandrelatestoclause12.2.1,toclause12.3.1onpage39,toclause12.3.3onpage43andtoclause12.4.1onpage47.
【中国标准分类号】:M71
【国际标准分类号】:33_160_30
【页数】:
【正文语种】:英语