【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】:BSENISO8256-2004
【标准状态】:现行
【国别】:英国
【发布日期】:2004-07-16
【实施或试行日期】:2004-07-16
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:冲击断裂试验;电压测量;抗断裂强度;抗拉试验;试验设备;脆性;韧性;应变;拉伸应变;试样;试验条件;塑料;测定;数学计算;冲击试验;试验;拉伸冲力;定义;机械试验
【英文主题词】:Anisotropy;Breakingstrength;Brittleness;Definition;Definitions;Determination;Impactstrength;Impacttesting;Materials;Materialstesting;Mathematicalcalculations;Mechanicaltesting;Plastics;Shockrupturetests;Strain;Tensileimpactstrength;Tensilestrain;Tensiletesting;Testequipment;Testspecimens;Testing;Testingconditions;Tests;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】:26P.;A4
【正文语种】:英语