基本信息
| 标准名称： | 电子设备用机电开关 第五部分：按钮开关分规范 第一篇 空白详细规范 |
| 中标分类： |
电子元器件与信息技术 >>
电子元件 >>
开关 |
| 发布日期： | 1994-10-01 |
| 实施日期： | |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 9页 |
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所属分类： 电子元器件与信息技术 电子元件 开关
【英文标准名称】:StandardTestMethodforHighSpeedPuncturePropertiesofPlasticFilmsUsingLoadandDisplacementSensors
【原文标准名称】:使用负荷和位移传感器测定塑料薄膜的高速刺穿特性的标准试验方法
【标准号】:ASTMD7192-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D20.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:fallingweight;impacttesting;plasticthinfilm;punctureproperties;Fallingweighttest;Impacttesting;Plasticfilm;Puncturetesting
【摘要】:Thistestmethodisdesignedtoprovideloadversusdeformationresponseofplasticfilmsunderessentiallymulti-axialdeformationconditionsatimpactvelocities.Thistestmethodfurtherprovidesameasureoftheratesensitivityoftheplasticfilmstoimpact.Multi-axialimpactresponse,whilepartlydependentonthickness,doesnotnecessarilyhavealinearcorrelationwithspecimenthickness.Therefore,resultsshouldbecomparedonlyforspecimensofessentiallythesamethickness,unlessspecificresponsesversusthicknessformulaehavebeenestablishedfortheplasticfilmsbeingtested.Formanyplasticfilms,theremaybeaspecificationthatrequirestheuseofthistestmethod,butwithsomeproceduralmodificationsthattakeprecedencewhenadheringtothespecification.Therefore,itisadvisabletorefertothatmaterialspecificationbeforeusingthistestmethod.Table1ofClassificationSystemD4000liststheASTMmaterialsstandardsthatcurrentlyexist.Thevaluesobtainedbythistestmethodarehighlydependentonthemethodandconditionsoffilmfabricationaswellasthetypeandgradeofresin.Resultscanvarysignificantly,dependinguponsamplequality,uniformityoffilmgage,diemarks,contaminants,andsoforth.1.1Thistestmethodcoversthedeterminationofpuncturepropertiesofplasticfilms,overarangeoftestvelocities.1.1.1TestMethodD1004hasdefinedfilmashavingathicknessnotgreaterthan0.25mm.Plasticmaterialshavingathicknessabovethislimitarenottobeexcludedfromuseunlessshowntoberigid(see3.2.1).TestMethodD3763istherecommendedmethodforinstrumentedpuncturetestingofrigidplastics.1.2Testdataobtainedbythistestmethodisrelevantandappropriateforuseinengineeringdesign.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThistestmethoddoesnotcloselyconformtoISO7765-2.Theonlysimilaritybetweenthetwotestsisthattheyarebothinstrumentedimpacttests.Thedifferencesinstriker,fixture,specimengeometriesandintestvelocitycanproducesignificantlydifferenttestresults.
【中国标准分类号】:G33
【国际标准分类号】:83_140_10
【页数】:8P.;A4
【正文语种】:英语