ASTM D2990-2001 塑料的拉伸、压缩、弯曲蠕变及蠕变断裂的标准试验方法
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【英文标准名称】:StandardTestMethodsforTensile,Compressive,andFlexuralCreepandCreep-RuptureofPlastics
【原文标准名称】:塑料的拉伸、压缩、弯曲蠕变及蠕变断裂的标准试验方法
【标准号】:ASTMD2990-2001
【标准状态】:现行
【国别】:
【发布日期】:2001
【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】:试验;塑料
【英文主题词】:creep;creep-rupture;chemicalreactions;NumberCode83.080.01(Plastingeneral)
【摘要】:Datafromcreepandcreep-rupturetestsarenecessarytopredictthecreepmodulusandstrengthofmaterialsunderlong-termloadsandtopredictdimensionalchangesthatmayoccurasaresultofsuchloads.Datafromthesetestmethodscanbeused:(1)tocomparematerials,(2)inthedesignoffabricatedparts,(3)tocharacterizeplasticsforlong-termperformanceunderconstantload,and(4)undercertainconditions,forspecificationpurposes.Beforeproceedingwiththistestmethod,referenceshouldbemadetothespecificationofthematerialbeingtested.Anyspecimenpreparation,conditioning,dimensions,and/ortestingparameterscoveredinthematerialspecificationshalltakeprecedenceoverthosementionedinthistestmethod,exceptincaseswheretodosowouldconflictwiththepurposeforconductingtesting.Iftherearenomaterialspecifications,thenthedefaultconditionsapply.1.1Thesetestmethodscoverthedeterminationoftensileandcompressivecreepandcreep-ruptureofplasticsunderspecifiedenvironmentalconditions(see3.1.3).1.2Whilethesetestmethodsoutlinetheuseofthree-pointloadingformeasurementofcreepinflexure,four-pointloading(whichisusedlessfrequently)canalsobeusedwiththeequipmentandprinciplesasoutlinedinTestMethodsD790.1.3Formeasurementsofcreep-rupture,tensionisthepreferredstressmodebecauseforsomeductileplasticsrupturedoesnotoccurinflexureorcompression.1.4Testdataobtainedbythesetestmethodsarerelevantandappropriateforuseinengineeringdesign.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Aspecificwarningstatementisgivenin6.8.2.Note18212;ThisstandardandISO899aresimilarincontent,butarenotequivalent.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:20P.;A4
【正文语种】:
【原文标准名称】:塑料的拉伸、压缩、弯曲蠕变及蠕变断裂的标准试验方法
【标准号】:ASTMD2990-2001
【标准状态】:现行
【国别】:
【发布日期】:2001
【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】:试验;塑料
【英文主题词】:creep;creep-rupture;chemicalreactions;NumberCode83.080.01(Plastingeneral)
【摘要】:Datafromcreepandcreep-rupturetestsarenecessarytopredictthecreepmodulusandstrengthofmaterialsunderlong-termloadsandtopredictdimensionalchangesthatmayoccurasaresultofsuchloads.Datafromthesetestmethodscanbeused:(1)tocomparematerials,(2)inthedesignoffabricatedparts,(3)tocharacterizeplasticsforlong-termperformanceunderconstantload,and(4)undercertainconditions,forspecificationpurposes.Beforeproceedingwiththistestmethod,referenceshouldbemadetothespecificationofthematerialbeingtested.Anyspecimenpreparation,conditioning,dimensions,and/ortestingparameterscoveredinthematerialspecificationshalltakeprecedenceoverthosementionedinthistestmethod,exceptincaseswheretodosowouldconflictwiththepurposeforconductingtesting.Iftherearenomaterialspecifications,thenthedefaultconditionsapply.1.1Thesetestmethodscoverthedeterminationoftensileandcompressivecreepandcreep-ruptureofplasticsunderspecifiedenvironmentalconditions(see3.1.3).1.2Whilethesetestmethodsoutlinetheuseofthree-pointloadingformeasurementofcreepinflexure,four-pointloading(whichisusedlessfrequently)canalsobeusedwiththeequipmentandprinciplesasoutlinedinTestMethodsD790.1.3Formeasurementsofcreep-rupture,tensionisthepreferredstressmodebecauseforsomeductileplasticsrupturedoesnotoccurinflexureorcompression.1.4Testdataobtainedbythesetestmethodsarerelevantandappropriateforuseinengineeringdesign.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Aspecificwarningstatementisgivenin6.8.2.Note18212;ThisstandardandISO899aresimilarincontent,butarenotequivalent.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:20P.;A4
【正文语种】:
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