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【英文标准名称】:StandardTestMethodsforStructuralPanelsinTension
【原文标准名称】:胶合板抗拉结构的标准试验方法
【标准号】:ASTMD3500-1990(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1990
【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】:D07.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:panels;structuralpanels;tensileproperties;wood-based;Compositewoodproducts;Orientedstrandboard(OSB);Plywood;Structuralwoodpanels;Tensileproperties/testing--woodproducts;Waferboard;Woodproducts(structural)
【摘要】:Thesetestmethodsdeterminethetensilepropertiesofstructuralpanelsinresponsetostressesactingintheplaneofthepanel.TestMethodA8212;Thistestmethodissuitedtomaterialthatisuniformwithrespecttotensileproperties.Itisnormallyappliedtostructuralpanelsandplywoodofclear,straight-grainedveneers.Itmayalsobeusedtoevaluatethestrengthofscarfandfingerjointsandothermanufacturingprocessvariablesthatcanbeexpectedtoinfluencethetensilepropertiesofstructuralpanelsinauniformmanneracrossthewidthofthesheet.TestMethodB8212;Thistestmethodemployslargetestspecimensandrespondswelltoallmanufacturingvariablesandgrowthcharacteristicsthataffectthetensilepropertiesofstructuralpanels.Itisrecommendedthatwherecomparisonsaretobemadethatthesametestmethodandspecimensizebeusedthroughout.Thisisbecausethevolumeofmaterialincludedinatestspecimencaninfluencethetensilestrengthregardlessofwhetherthematerialpropertiesareuniformthroughoutthesheetorvarywidelyduetothepresenceofgrowthormanufacturingfeatures.1.1Thesetestmethodscoverthedeterminationofthetensilepropertiesofstructuralpanels.1.2Structuralpanelsinuseincludeplywood,waferboard,orientedstrandboardandcompositesofveneer,andotherwood-basedlayers1.3TestMethodA,TensileTestforSmallSpecimens:1.3.1Thistestmethodemployssmallspecimensthatshouldhaveareducedcrosssectionatthecenteroftheirlengthtoavoidfailureinthegriparea.Thetransitionfromfullwidthofspecimentoreducedsectionatthecentershouldbegradualtominimizestressconcentration.1.3.2Whenthemeasurementsofelasticpropertiesaretobemade,thelengthofthereducedcrosssectionatthecentershouldbeofsufficientlengthtoaccommodateanextensometer.1.4TestMethodB,TensileTestforLargeSpecimens:1.4.1Thistestmethodemployslargespecimensandrespondswelltomanufacturingvariables,plywoodgrowthcharacteristics,andotherdefectsinfluencingthetensilepropertiesofstructuralpanels.1.4.2Thetestspecimensarelargeenoughtocontainthemaximumsizeddefectsfoundinplywoodpanels.Thetestspecimenshaveaconstantcrosssectionsincethesizeandlocationofdefectscontrolthelocationoffailuresandtheeffectofstressconcentrationatthegripsisovershadowed.1.4.3Thistestmethodisrecommendedforthefollowing:1.4.3.1Comparativetestsofstructuralpanels,1.4.3.2Determiningtheinfluenceofanyspecificstrengthreducingdefectsonthetensilepropertiesofstructuralpanels,1.4.3.3Determinationoftensilepropertiesofplywoodandcompositescontainingveneerwithgrowthandmanufacturingcharacteristics.1.5Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B70
【国际标准分类号】:79_060_10
【页数】:6P.;A4
【正文语种】:英语