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【英文标准名称】:Mechanicalvibrationandshock-Characterizationofthedynamicmechanicalpropertiesofvisco-elasticmaterials-Part2:Resonancemethod
【原文标准名称】:机械振动和冲击.粘弹性材料的动态机械特性的表征.第2部分:共振法
【标准号】:ISO18437-2-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-04
【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/TC108
【标准类型】:()
【标准水平】:()
【中文主题词】:振动;规范(验收);振动影响(对人体);振动影响;振动测量;测量;试验;材料的机械性能;冲击;抗震试验;弹性(流体);共振法;定义
【英文主题词】:Definition;Definitions;Elasticproperties(fluids);Measurement;Mechanicalpropertiesofmaterials;Resonancemethods;Shock;Specification(approval);Testing;Vibration;Vibrationeffects;Vibrationeffects(humanbody);Vibrationmeasurement;Vibrationresistancetests
【摘要】:ThispartofISO18437definesaresonancemethodfordeterminingfromlaboratory,measurementsthedynamicmechanicalpropertiesoftheresilientmaterialsusedinvibrationisolators.Itisapplicabletoshockandvibrationsystemsoperatingfromafractionofahertztoabout20kHz.ThispartofISO18437isapplicabletoresilientmaterialsthatareusedinvibrationisolatorsinordertoreducea)transmissionsofunwantedvibrationsfrommachines,structuresorvehiclesthatradiatesound(fluid-borne,airborne,structure-borne,orothers),andb)thetransmissionoflow-frequencyvibrationsthatactuponhumansorcausedamagetostructuresorsensitiveequipmentwhenthevibrationistoosevere.ThedataobtainedwiththemeasurementmethodsthatareoutlinedinthispartofISO18437andfurtherdetailedinISO18437-3areusedfor—thedesignofefficientvibrationisolators,—theselectionofanoptimummaterialforagivendesign,—thetheoreticalcomputationofthetransferofvibrationsthroughisolators,—informationduringproductdevelopment,—productinformationprovidedbymanufacturersandsuppliers,and—qualitycontrol.Theconditionforthevalidityofthemeasurementmethodislinearityofthevibrationalbehaviouroftheisolator.Thisincludeselasticelementswithnonlinearstaticloaddeflectioncharacteristics,providedthattheelementsshowapproximatelinearityintheirvibrationalbehaviourforagivenstaticpreload.Measurementsusingthismethodaremadeoveroneortwodecadesinfrequencyatanumberoftemperatures.Byapplyingthetime-temperaturesuperpositionprinciple,themeasureddataareshiftedtogeneratedynamicmechanicalpropertiesoveramuchwiderrangeoffrequencies(typically10to10Hzatasinglereferencetemperature)thaninitiallymeasuredatagiventemperature.NOTEForthepurposesofthispartofISO18437,theterm"dynamicmechanicalproperties"referstothedeterminationofthefundamentalelasticproperties,e.g.thecomplexYoung'smodulusasafunctionoftemperatureandfrequencyand,ifapplicable,astaticpreload.
【中国标准分类号】:J04
【国际标准分类号】:17_160
【页数】:15P.;A4
【正文语种】:英语


【英文标准名称】:DetailSpecification:Fixedlowpowernonwire-woundsurfacemount(SMD)resistors-Rectangular-Stabilityclasses0,1;0,25;0,5;1;GermanversionEN140401-801:2002
【原文标准名称】:详细规范.低功率非线绕表面安装的固定电阻器.矩形.稳定性分级为0.1、0.25、0.5和1;德文版本EN140401-801:2002
【标准号】:DINEN140401-801-2002
【标准状态】:作废
【国别】:德国
【发布日期】:2002-12
【实施或试行日期】:2002-12-01
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:固定电阻器;空白格式;表面安装装置;质量保证;电容性负载;电子设备及元件;稳定性;规范;尺寸;检验;长方形;非线绕;布置;设计;额定值;顺序示度;表面安装;芯片;电气工程;详细规范;架设(施工作业);电阻器;表面安装设备;极
【英文主题词】:
【摘要】:
【中国标准分类号】:L13
【国际标准分类号】:31_040_10
【页数】:30P;A4
【正文语种】:德语