ASTM D5487-1998(2008) 冲击试验机测定加载容器模拟跌落的标准试验方法

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【英文标准名称】:StandardTestMethodforSimulatedDropofLoadedContainersbyShockMachines
【原文标准名称】:冲击试验机测定加载容器模拟跌落的标准试验方法
【标准号】:ASTMD5487-1998(2008)
【标准状态】:现行
【国别】:美国
【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】:D10.21
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:criticalelement;droptest;packagingcontainer;shock;shockmachine;velocity;Bags;Criticalelement;Droptests--shippingcontainers;Packing/packagingmaterials/systems;Sacks;Shippingcontainers/materials/applications;Shockabsorption/atten
【摘要】:Shippingcontainersandtheinteriorpackagingmaterialsareusedtoprotecttheircontentsfromthehazardsencounteredinhandling,transportation,andstorage.Shockisoneofthemoretroublesomeofthesehazards.Free-falldroptesting,whileeasytoperform,oftenunderstressesthetestspecimenbysubjectingittodropswhicharenotperpendiculartothedroppingsurface.Note18212;Forexample,testinghasshownthatnon-perpendiculardrops,2x00B0;offperpendicularity,resultin8%loweraccelerationintothetestspecimenresultingfromtheimpactenergydispersinginseveralaxes.Controlledshockinputbyshockmachinesprovidesaconvenientmethodforevaluatingtheabilityofshippingcontainers,interiorpackagingmaterials,andcontentstowithstandshocks.Simulatedfree-falldroptestingofpackagesystems,whichhavecriticalelements,hasproducedgoodresultswherethefrequencyoftheshockpulseisatleastthreetimesthatofthepackagesystem''snaturalfrequency.Asinmostmechanicalshocktestprocedures,fixturingofthepackageontheshocktestmachinemayhavesignificantinfluenceonthetestresults.Typically,packageswillbefirmlyheldonthetablebysecuringsometypeofcrossmember(s)acrossthetopofthepackage.Careshouldbetakenthatanypressureresultingfromsuchfixturingshouldbeminimal,particularlywhenthecontainerbeingtestediscorrugatedorsomeothersimilarmaterial.Incaseswherelow-acceleration,long-durationresponsesareanticipated,anyfixturingcanpotentiallyinfluencepackageditemresponseandcanpossiblyalteranycorrelationbetweenthistestmethodandfree-falldroptesting.Wheresuchcorrelationisdesired,thepackagecanbetestedwithoutitbeingfixeddirectlytothetable.Notethatinsuchcircumstances,theshippingcontainercanvigorouslyreboundfromthetableandcan,ifnototherwisecontrolled,presentasafetyproblemforoperators.Fixingtheshippingcontainertotheshockmachinetableismostoftenrecommendedforsafetyandconvenience,butaccuracyandprecisionofthistestmethodshouldnotbecompromisedbysuchfixturing.Note28212;Arigidpackagesystemwithanaturalfrequencyabove83Hzrequiresashockpulseshorterthanthe2-ms(nominal)durationcurrentlyavailablewithmanyoftoday''sshockmachines:where:ds

【中国标准分类号】:A82
【国际标准分类号】:55_180_10
【页数】:4P.;A4
【正文语种】:英语