【英文标准名称】:Mechanicalvibrationandshock-Characterizationofthedynamicmechanicalpropertiesofvisco-elasticmaterials-Part4:Dynamicstiffnessmethod
【原文标准名称】:机械振动和冲击.粘弹性材料动态机械性能的特性.第4部分:动态稳定度方法
【标准号】:ISO18437-4-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-06
【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】:定义;弹性(流体);阻抗;测量;材料的机械性能;共振法;冲击;规范(验收);测试;振动;振动效应;振动影响(对人体);振动测量;抗振试验
【英文主题词】:Definition;Definitions;Elasticproperties(fluids);Impedance;Measurement;Mechanicalpropertiesofmaterials;Resonancemethods;Shock;Specification(approval);Testing;Vibration;Vibrationeffects;Vibrationeffects(humanbody);Vibrationmeasurement;Vibrationresistancetests
【摘要】:ThispartofISO18437specifiesadirectmethodformeasuringthecomplexdynamicmoduliofelasticity(theYoung,shearandbulkmoduli,andtheirrespectivelossfactorscorrespondingtothetensile,shearandallcompressivestrains)forpolymeric(rubberyandviscouspolymers,aswellasrigidplastics)materialsoverawidefrequencyandtemperaturerange.Measurementsareperformedbythedynamicstiffnessmethod,whichuseselectricsignalsfromsensorsattachedtoatestpiece.Thesesignalsareproportionaltothedynamicforcesactingonthetestpieceandthestrainsinthetestpieceduetotheeffectoftheseforces.Themeasurementfrequencyrangeisdeterminedbythesizeoftestpiece,theaccuracyrequiredonthedynamicmodulusmeasurements,therelationshipbetweenthestiffnessoftheoscillationgeneratorandthestiffnessofthetestpiece,andbytheresonancecharacteristicsofthetestfixtureused.ThemethodpresentedinthispartofISO18437allowsmeasurementunderanystaticpre-loadallowedforthetestpiece(includingthetestpiecehavingthenon-linearcharacteristicsunderdifferentstaticloads),butundersmalldynamic(acoustic)strains,i.e.,inlimitswherethelinearpropertiesofthetestpiecearenotdistorted.Dependingonthepre-loadconditions,therelationbetweenthemoduliisunique.
【中国标准分类号】:J04
【国际标准分类号】:17_160
【页数】:20P;A4
【正文语种】:英语