【英文标准名称】:Methodsoftestingplastics-Mechanicalproperties-Longitudinalandshearvibration-Wave-propagationmethod
【原文标准名称】:塑料试验方法.第3部分:机械性能.径向剪切震动.试验方法323E:波传播法
【标准号】:BS2782-3Method323E-1997
【标准状态】:现行
【国别】:英国
【发布日期】:1997-08-15
【实施或试行日期】:1997-08-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:塑料;超声检验;塑料和橡胶技术;试样;高聚物;试验设备;波的性质和现象;剪应力;波的传播;机械测量
【英文主题词】:Definition;Definitions;Determination;Dynamictesting;Mechanicalproperties;Plastics;Polymers;Shearmodulus;Testing;Ultrasonics;Vibration;Wavepropagation
【摘要】:ThispartoftheInternationalStandardISO6721describesanultrasonicwavepropagationmethodfordeterminingthestoragecomponentsofthelongitudinalcomplexmodulusLandtheshearcomplexmodulusGofpolymersatdiscretefrequenciestypicallyintherange0.5MHzto5MHz.Themethodissuitableformeasuringmaterialswithstoragemoduliintherange0.01GPato200GPaandwithlossfactorsbelow0.1ataround1MHz.Withmaterialsthathaveahigherloss,significanterrorsinvelocitymeasurementareintroducedthroughwaveformdistortionandcanonlybereducedusingproceduresthatareoutsidethescopeofthisstandard.Themethodallowsmeasurementstobemadeonsmallspecimens,typically50mm×20mm×5mm,orsmallregionsoflargerspecimensorsheets.Itisthereforepossibletoobtaininformationonthehomogeneityoranisotropy(seeclause10.5)ofmodulusinaspecimen.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:24P;A4
【正文语种】:英语