【英文标准名称】:StandardTestMethodforYoung'sModulusofRefractoryShapesbySonicResonance
【原文标准名称】:用音响共振法测定耐火异型材的弹性模量的标准试验方法
【标准号】:ASTMC885-1987(2007)
【标准状态】:作废
【国别】:
【发布日期】:1987
【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】:C08.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:耐火材料;弹性模量;试验;形状
【英文主题词】:flexuralvibration;monolithicrefractories;refractorybrick;sonicresonance;Young'sModulus
【摘要】:Young’modulusisafundamentalmechanicalpropertyofamaterial.Thistestmethodisusedtodeterminethedynamicmodulusofelasticityofrectangularshapes.Sincethetestisnondestructive,specimensmaybeusedforothertestsasdesired.Thistestmethodisusefulforresearchanddevelopment,engineeringapplicationanddesign,manufacturingprocesscontrol,andfordevelopingpurchasingspecifications.ThefundamentalassumptioninherentinthistestmethodisthataPoisson’ratioof1/6istypicalforheterogeneousrefractorymaterials.TheactualPoisson’ratiomaydiffer.1.1Thistestmethodcoversaprocedureformeasuringtheresonancefrequencyintheflexural(transverse)modeofvibrationofrectangularrefractorybrickorrectangularlyshapedmonolithsatroomtemperature.Young'smodulusiscalculatedfromtheresonancefrequencyoftheshape,itsmass(weight)anddimensions.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q40
【国际标准分类号】:81_080
【页数】:6P.;A4
【正文语种】:


【英文标准名称】:Dictationequipment;Basicoperatingrequirements
【原文标准名称】:听写设备基本操作要求
【标准号】:ISO1730-1980
【标准状态】:现行
【国别】:国际
【发布日期】:1980-05
【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/IECJTC1
【标准类型】:()
【标准水平】:()
【中文主题词】:磁带录音机;听写设备;使用要求;办公系统;办公机器;办公室设备;规范(批准)
【英文主题词】:Dictationequipment;Officeequipment;Officemachines;Officesystem;Specification(approval);Taperecorders
【摘要】:Appliestodictationmachines,transcriptionmachinesandtocombineddictationandtranscriptionmachines.Servestodefineroleofthesemachinesandtodescribeelementstoensuretheireffectiveoperationandtospecifyoperatingrequirements.References:ISO4062;5138/1.
【中国标准分类号】:Y54
【国际标准分类号】:35_260
【页数】:5P.;A4
【正文语种】:英语