【英文标准名称】:Plastics-Determinationoftensile-impactstrength
【原文标准名称】:塑料.拉伸冲击强度测定
【标准号】:ISO8256-2004
【标准状态】:现行
【国别】:国际
【发布日期】:2004-07
【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/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:电压测量;韧性;脆性;各向异性;抗拉试验;试验条件;拉伸应变;试样;冲击断裂试验;冲击试验;抗断裂强度;试验设备;塑料;张力;机械试验;定义;数学计算;试验;试验;应变;测定
【英文主题词】:Anisotropy;Breakingstrength;Brittleness;Definitions;Determination;Impactstrength;Impacttesting;Materials;Materialstesting;Mathematicalcalculations;Mechanicaltesting;Plastics;Shockrupturetests;Strain;Tensileimpactstrength;Tensilestrain;Tensiletesting;Testequipment;Testspecimens;Testing;Testingconditions;Toughness;Voltagemeasurement
【摘要】:1ThisInternationalStandardspecifiestwomethods(methodAandmethodB)forthedeterminationofthetensile-impactstrengthofplasticsunderdefinedconditions.Thetestscanbedescribedastensiletestsatrelativelyhighstrainrates.Thesemethodscanbeusedforrigidmaterials(asdefinedinISO472),butareespeciallyusefulformaterialstooflexibleortoothintobetestedwithimpacttestsconformingtoISO179orISO180.2Thesemethodsareusedforinvestigatingthebehaviourofspecifiedspecimensunderspecifiedimpactvelocities,andforestimatingthebrittlenessorthetoughnessofspecimenswithinthelimitationsinherentinthetestconditions.3Thesemethodsareapplicablebothtospecimenspreparedfrommouldingmaterialsandtospecimenstakenfromfinishedorsemi-finishedproducts(forexamplemouldings,laminates,orextrudedorcastsheets).4Resultsobtainedbytestingmouldedspecimensofdifferentdimensionsmaynotnecessarilybethesame.Equally,specimenscutfrommouldedproductsmaynotgivethesameresultsasspecimensofthesamedimensionsmouldeddirectlyfromthematerial.Testresultsobtainedfromspecimenspreparedfrommouldingcompoundscannotbeapplieddirectlytomouldingsofanygivenshape,becausevaluesmaydependonthedesignofthemouldingandthemouldingconditions.ResultsobtainedbymethodAandmethodBmayormaynotbecomparable.5Thesemethodsarenotsuitableforuseasasourceofdatafordesigncalculationsoncomponents.Informationonthetypicalbehaviourofamaterialcanbeobtained,however,bytestingdifferenttypesoftestspecimenpreparedunderdifferentconditions,andbytestingatdifferenttemperatures.Thetwodifferentmethodsaresuitableforproductioncontrolaswellasforqualitycontrol.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:16P;A4
【正文语种】:英语