ASTM D5931-1996(2007) 用数字密度计对发动机冷冻剂的浓缩和水般的发动机冷冻剂的标准测试方法

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标准名称：	点焊接头剪切拉伸疲劳试验方法
英文名称：	Test method for shear tensile fatigue of spot welded joints
中标分类：	机械 >> 加工工艺 >> 焊接与切割
ICS分类：	机械制造 >> 焊接、钎焊和低温焊 >> 焊接接头
发布部门：	国家技术监督局
发布日期：	1994-07-19
实施日期：	1995-05-01
首发日期：	1994-07-19
作废日期：	2005-10-14
主管部门：	国家标准化管理委员会
归口单位：	全国焊接标准化技术委员会
起草单位：	哈尔滨焊接所
出版日期：	1900-01-01
页数：	平装16开， 页数：9， 字数：13千字

本标准规定了点焊接头剪切拉伸疲劳试验方法。本标准适用于板厚为0.5～6mm的金属板材，在室温大气环境中进行的两块板重叠单点点焊接头标准疲劳试件的剪切拉伸疲劳试验，试验的载荷比为0～0.2。

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【英文标准名称】:StandardPracticesforElectricalMethodsforLocatingLeaksinGeomembranesCoveredwithWaterorEarthMaterials
【原文标准名称】:水或土料覆盖的土工薄膜上漏洞定位的电方法的标准实施规程
【标准号】:ASTMD7007-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:D35.10
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:constructionqualityassurance;electricalleaklocationmethod;geomembrane;leakdetection;leaklocation
【摘要】:Geomembranesareusedasimpermeablebarrierstopreventliquidsfromleakingfromlandfills,ponds,andothercontainments.Theliquidsmaycontaincontaminantsthatifreleasedcancausedamagetotheenvironment.Leakingliquidscanerodethesubgrade,causingfurtherdamage.Leakagecanresultinproductlossorotherwisepreventtheinstallationfromperformingitsintendedcontainmentpurpose.Forthesereasons,itisdesirablethatthegeomembranehaveaslittleleakageaspractical.Geomembraneleakscanbecausedbypoorqualityofthesubgrade,poorqualityofthematerialplacedonthegeomembrane,accidents,poorworkmanship,andcarelessness.Themostsignificantcausesofleaksingeomembranesthatarecoveredwithonlywaterarerelatedtoconstructionactivitiesincludingpumpsandequipmentplacedonthegeomembrane,accidentalpunctures,andpuncturescausedbytrafficoverrocksordebrisonthegeomembraneorinthesubgrade.Themostsignificantcauseofleaksingeomembranescoveredwithearthmaterialsisconstructiondamagecausedbymachinerythatoccurswhileplacingtheearthmaterialonthegeomembrane.Suchdamagealsocanbreachadditionallayersoftheliningsystemsuchasgeosyntheticclayliners.Electricalleaklocationmethodsareaneffectivefinalqualityassurancemeasuretolocatepreviouslyundetectedormissedleaks.1.1Thisstandardpracticedescribesstandardproceduresforusingelectricalmethodstolocateleaksingeomembranescoveredwithwaterorearthmaterialscontainingmoisture.1.2Thisstandardpracticeisintendedtoensurethatleaklocationsurveysareperformedwithdemonstratedleakdetectioncapability.Toallowfurtherinnovations,andbecausevariousleaklocationpractitionersuseawidevarietyofproceduresandequipmenttoperformthesesurveys,performance-basedoperationsareusedthatspecifytheminimumleakdetectionperformancefortheequipmentandprocedures.1.3Thisstandardpracticerequiresthattheleaklocationequipment,procedures,andsurveyparametersusedaredemonstratedtoresultinanestablishedminimumleakdetectionsensitivity.Thesurveyshallthenbeconductedusingthedemonstratedequipment,procedures,andsurveyparameters.1.4Separateproceduresaregivenforleaklocationsurveysforgeomembranescoveredwithwaterandforgeomembranescoveredwithearthmaterials.Separateproceduresaregivenforleakdetectionsensitivitytestsusingactualandartificialleaks.1.5Leaklocationsurveyscanbeusedongeomembranesinstalledinbasins,ponds,tanks,oreandwastepads,landfillcells,landfillcaps,andothercontainmentfacilities.Theproceduresareapplicableforgeomembranesmadeofmaterialssuchaspolyethylene,polypropylene,polyvinylchloride,chlorosulfonatedpolyethylene,bituminousmaterial,andotherelectrically-insulatingmaterials.1.6Warning-Theelectricalmethodsusedforgeomembraneleaklocationcouldusehighvoltages,resultinginthepotentialforelectricalshockorelectrocution.Thishazardmightbeincreasedbecauseoperationsmightbeconductedinornearwater.Inparticular,ahighvoltagecouldexistbetweenthewaterorearthmaterialandearthground,oranygroundedconductor.TheseproceduresarepotentiallyVERYDANGEROUS,andcanresultinpersonalinjuryordeath.Theelectricalmethodsusedforgeomembraneleaklocationshouldbeattemptedonlybyqualifiedandexperiencedpersonnel.Appropriatesafetymeasuresmustbetakentoprotecttheleaklocationoperatorsaswellasotherpeopleatthesite.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheap......
【中国标准分类号】:W59
【国际标准分类号】:59_080_70
【页数】:11P.;A4
【正文语种】: