【英文标准名称】:Buildingmaterialsandcomponentsforbuildingchimneys;lightweightconcreteflues,homogenouschimneys,requirements
【原文标准名称】:烟囱建造用建筑材料和构件.第1部分:轻型混凝土烟道、同质烟囱、要求
【标准号】:DIN18150-1-1979
【标准状态】:现行
【国别】:德国
【发布日期】:1979-09
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:公差;密度;粘合剂;规范(审批);轻质混凝土;形状;混凝土;烟囱;尺寸;施工材料;热绝缘;裂纹;加筋;元部件;抗压强度;定义;监督(认可);排气竖管;作标记
【英文主题词】:
【摘要】:Buildingmaterialsandcomponentsforbuildingchimneys;lightweightconcreteflues;homogenouschimneys;requirementsAbschnitt1Absatz2Satz2giltab1.Januar1981.DieseNormwirdindiebeimInstitutfürBautechnik,Berlin,geführte?ListevonBau
【中国标准分类号】:Q14
【国际标准分类号】:91_100_30
【页数】:6P;A4
【正文语种】:德语


【英文标准名称】:StandardPracticeforFractureToughnessTestingofAluminumAlloys
【原文标准名称】:铝合金断裂韧性试验的标准实施规程
【标准号】:ASTMB646-2006a
【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】:B07.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:合金;铝;铝合金;抗裂缝扩张;裂纹;断裂;金属;有色金属;平面应变断裂韧性试验;试验;韧性
【英文主题词】:aluminumalloys;fracturetoughness;linear-elastic;plane-strain;planestress;qualityassurance;screeningtests
【摘要】:Thispracticeisprovidedtodevelopandmaintainuniformityinpracticesfortheevaluationofthetoughnessofaluminumalloys,particularlywithregardtosupplierqualification,qualityassurance,andmaterialreleasetospecifications.Itisemphasizedthattheuseoftheseprocedureswillnotalterthevalidityofdatadeterminedwithspecifictestmethods,butprovidesguidanceintheinterpretationoftestresults(validorinvalid)andguidanceintheselectionofareasonabletestprocedureinthoseinstanceswherenostandardexiststoday.1.1Fracturetoughnessisakeypropertyforanumberofaluminumalloysutilizedinaerospaceandprocessindustries.Fracturetoughnesstestingisoftenrequiredforsupplierqualification,qualitycontrol,andmaterialreleasepurposes.Thepurposeofthispracticeistoprovideuniformtestproceduresfortheindustry,pointingoutwhichcurrentstandardsareutilizedinspecificcases,andprovidingguidelineswherenostandardsexist.Thispracticeprovidesguidancefortesting(a)sheetandotherproductshavingaspecifiedthicknesslessthan6.35mm(0.250in.),(b)intermediatethicknessesofplate,forgings,andextrusionsthataretoothinforvalidplane-strainfracturetoughnesstestingbuttoothickfortreatmentassheet,suchasproductshavingaspecifiedthicknessgreaterthanorequalto6.35mm(0.250in.)butlessthan25to50mm(1to2in.),dependingontoughnesslevel,and(c)relativelythickproductswhereTestMethodE399isapplicable.1.2Thispracticeaddressesbothdirectmeasurementsoffracturetoughnessandscreeningtests,thelatterrecognizingthecomplexityandexpenseofmakingformalfracturetoughnessmeasurementsongreatquantitiesofproductionlots.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesininch-poundunitsgiveninparenthesisareprovidedforinformationpurposesonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H61
【国际标准分类号】:77_120_10
【页数】:7P.;A4
【正文语种】: