ASTM D4933-1999(2004) 木材和木基材料湿度的调节的标准指南
作者:标准资料网 时间:2024-05-26 04:16:14 浏览:9251
来源:标准资料网
下载地址: 点击此处下载
【英文标准名称】:StandardGuideforMoistureConditioningofWoodandWood-BaseMaterials
【原文标准名称】:木材和木基材料湿度的调节的标准指南
【标准号】:ASTMD4933-1999(2004)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:D07.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:分析;导则;潮气;木材
【英文主题词】:equilibriummoisturecontent;moistureconditioning;moisturecontent;wood;wood-basedmaterials
【摘要】:Manyphysicalandmechanicalpropertiesofwoodandwood-basedmaterialschangeinresponsetotheenvironmentalequilibriummoisturecontent,andanycomparisonofthesepropertiesmusttakemoisturecontentintoaccount.Aconsistentbaseforcomparisonamongdifferenttestsamplesanddifferentlaboratoriesisnecessary.Shrinkageanddimensionalchangeinparticulararedependentonmoisturecontent,andtestsinvolvingtheirmeasurementmustbeconductedwithgoodequilibriummoisturecontentcontrol.Conditioningcanalsobeimportantinindustrialsettingswherethereareoptimummoisturecontentlevelsformanyproductsandprocesses,andconformancetotheselevelscanreducelossesinqualityandyield.1.1Thisguidecoversstandardproceduresforconditioningandequilibratingwoodandwood-basematerialstoconstantmoisturecontent.Theproceduresapplytosolidwood,wood-basefiberandparticulatematerialsandpanels,andwoodproductscontainingadhesives.Theyareintendedforuseinresearchanddevelopmentactivities,testinglaboratories,qualitycontrol,andforallotherclassesofproducersandusers.Thisguideincludesbackgroundmaterialontheimportanceofmoisturecontentcontrol,importantdefinitionsandtechnicaldata,possibletypesofapparatus,procedures,andtheimportanceofconditioningtime.Usersshouldrecognizethatthenecessarydegreeofprecisionandbiasvarieswiththeintentionsoftheusers.Someresearchandtesting,forexample,mightrequireveryclosecontrolofmoisturecontent,whereascontrolinanindustrialstoragefacilitymightnotrequiresuchclosecontrol.Thisguideoffersproceduresthatincludethesedifferentrequirements.1.2Thefollowingsafetyhazardscaveatpertainsonlytotheproceduresection,Section6,ofthisguide.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B68
【国际标准分类号】:79_060_01
【页数】:8P.;A4
【正文语种】:
【原文标准名称】:木材和木基材料湿度的调节的标准指南
【标准号】:ASTMD4933-1999(2004)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:D07.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:分析;导则;潮气;木材
【英文主题词】:equilibriummoisturecontent;moistureconditioning;moisturecontent;wood;wood-basedmaterials
【摘要】:Manyphysicalandmechanicalpropertiesofwoodandwood-basedmaterialschangeinresponsetotheenvironmentalequilibriummoisturecontent,andanycomparisonofthesepropertiesmusttakemoisturecontentintoaccount.Aconsistentbaseforcomparisonamongdifferenttestsamplesanddifferentlaboratoriesisnecessary.Shrinkageanddimensionalchangeinparticulararedependentonmoisturecontent,andtestsinvolvingtheirmeasurementmustbeconductedwithgoodequilibriummoisturecontentcontrol.Conditioningcanalsobeimportantinindustrialsettingswherethereareoptimummoisturecontentlevelsformanyproductsandprocesses,andconformancetotheselevelscanreducelossesinqualityandyield.1.1Thisguidecoversstandardproceduresforconditioningandequilibratingwoodandwood-basematerialstoconstantmoisturecontent.Theproceduresapplytosolidwood,wood-basefiberandparticulatematerialsandpanels,andwoodproductscontainingadhesives.Theyareintendedforuseinresearchanddevelopmentactivities,testinglaboratories,qualitycontrol,andforallotherclassesofproducersandusers.Thisguideincludesbackgroundmaterialontheimportanceofmoisturecontentcontrol,importantdefinitionsandtechnicaldata,possibletypesofapparatus,procedures,andtheimportanceofconditioningtime.Usersshouldrecognizethatthenecessarydegreeofprecisionandbiasvarieswiththeintentionsoftheusers.Someresearchandtesting,forexample,mightrequireveryclosecontrolofmoisturecontent,whereascontrolinanindustrialstoragefacilitymightnotrequiresuchclosecontrol.Thisguideoffersproceduresthatincludethesedifferentrequirements.1.2Thefollowingsafetyhazardscaveatpertainsonlytotheproceduresection,Section6,ofthisguide.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B68
【国际标准分类号】:79_060_01
【页数】:8P.;A4
【正文语种】:
下载地址: 点击此处下载