【英文标准名称】:StandardTestMethodforPlastics:DynamicMechanicalProperties:InTension
【原文标准名称】:塑料的标准试验方法:动力机械性能:拉伸
【标准号】:ASTMD5026-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:流动性;塑料;抗拉试验;试验;热固性聚合物
【英文主题词】:dynamicmechanicalrheologicalproperties;elastic;lineardisplacement;loss;storagemodulus;tandelta;tension;viscoelasticbehavior
【摘要】:Thistestmethodprovidesasimplemeansofcharacterizingthethermomechanicalbehaviorofplasticmaterialsusingverysmallamountsofmaterial.Thedataobtainedmaybeusedforqualitycontrol,researchanddevelopment,aswellastheestablishmentofoptimumprocessingconditions.Dynamicmechanicaltestingprovidesasensitivemethodfordeterminingthermomechanicalcharacteristicsbymeasuringtheelasticandlossmoduliasafunctionoffrequency,temperature,ortime.Plotsofmoduliandtandeltaofamaterialversusthesevariablescanbeusedtoprovidegraphicalrepresentationindicativeoffunctionalproperties,effectivenessofcure(thermosettingresinsystem),anddampingbehaviorunderspecifiedconditions.Thistestmethodcanbeusedtoassess:5.3.1Modulusasafunctionoftemperature,5.3.2Modulusasafunctionoffrequency,5.3.3Theeffectsofprocessingtreatment,includingorientation,5.3.4Relativeresinbehavioralproperties,includingcureanddamping,5.3.5Theeffectsofsubstratetypesandorientation(fabrication)onelasticmodulus,and5.3.6Theeffectsofformulationadditiveswhichmightaffectprocessabilityorperformance.Beforeproceedingwiththistestmethod,referenceshouldbemadetothespecificationofthematerialbeingtested.Anytestspecimenpreparation,conditioning,dimensions,ortestingparameters,orcombinationthereof,coveredintherelevantASTMmaterialsspecificationshalltakeprecedenceoverthosementionedinthistestmethod.IftherearenorelevantASTMmaterialspecifications,thenthedefaultconditionsapply.1.1Thistestmethodoutlinestheuseofdynamicmechanicalinstrumentationforgatheringandreportingtheviscoelasticpropertiesofthermoplasticandthermosettingresinsandcompositesystemsintheformofrectangularspecimensmoldeddirectlyorcutfromsheets,plates,ormoldedshapes.Thetensiledatageneratedmaybeusedtoidentifythethermomechanicalpropertiesofaplasticmaterialorcompositionusingavarietyofdynamicmechanicalinstruments.1.2Thistestmethodisintendedtoprovideameansfordeterminingviscoelasticpropertiesofawidevarietyofplasticmaterialsusingnonresonantforced-vibrationtechniques,inaccordancewithPracticeD4065.Plotsoftheelastic(storage)modulus;loss(viscous)modulus;complexmodulusandtandeltaasafunctionoffrequency,time,ortemperatureareindicativeofsignificanttransitionsinthethermomechanicalperformanceofthepolymericmaterialsystem.1.3Thistestmethodisvalidforawiderangeoffrequencies,typicallyfrom0.01to100Hz.1.4Apparentdiscrepanciesmayariseinresultsobtainedunderdifferingexperimentalconditions.Theseapparentdifferencesfromresultsobservedinanotherstudycanusuallybereconciled,withoutchangingtheobserveddata,byreportinginfull(asdescribedinthistestmethod)theconditionsunderwhichthedatawereobtained.1.5Duetopossibleinstrumentationcompliance,thedatageneratedareintendedtoindicaterelativeandnotnecessarilyabsolutepropertyvalues.1.6Testdataobtainedbythistestmethodarerelevantandappropriateforuseinengineeringdesign.1.7ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninbracketsareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.ThistestmethodistechnicallyequivalenttoISO6721,Part4.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:3P.;A4
【正文语种】:


【英文标准名称】:Falsework-Performancerequirementsandgeneraldesign.
【原文标准名称】:脚手架.性能要求和一般设计
【标准号】:NFP93-502-2004
【标准状态】:作废
【国别】:法国
【发布日期】:2004-12-01
【实施或试行日期】:2004-12-31
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:职业安全;事故预防;材料;建筑;负荷;试验;荷载能力;尺寸选定;脚手架;管联接器;吊式脚手架;工作脚手架;支撑物;效应;安全要求;安全工程;定义;钢;设计;尺寸;数学计算;地基;规范(验收);工作场所安全;元部件
【英文主题词】:Accidentprevention;Components;Construction;Definition;Definitions;Design;Dimensioning;Dimensions;Effects;Foundations;Loadcapacity;Loading;Materials;Mathematicalcalculations;Occupationalsafety;Pipecouplings;Safetyengineering;Safetyrequirements;Scaffolds;Slungscaffolds;Specification(approval);Steels;Supports;Testing;Workscaffoldings;Workplacesafety
【摘要】:
【中国标准分类号】:P96
【国际标准分类号】:91_220
【页数】:42P;A4
【正文语种】:其他