ASTM D 6758-2008 电动机械法测量土壤和土壤集料实体的硬挺度和表观模数的标准试验方法
时间:2024-05-10 00:52:09 来源: 标准资料网 作者：标准资料网 阅读：8123
【英文标准名称】:StandardTestMethodforMeasuringStiffnessandApparentModulusofSoilandSoil-AggregateIn-PlacebyElectro-MechanicalMethod
【原文标准名称】:电动机械法测量土壤和土壤集料实体的硬挺度和表观模数的标准试验方法
【标准号】:ASTMD6758-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:测量方法;土壤研究;土壤;硬挺度
【英文主题词】:Methodsformeasuring;Soilinvestigations;Soils;Stiffness
【摘要】:
【中国标准分类号】:
【国际标准分类号】:93_020
【页数】:5P;A4
【正文语种】:英语
【英文标准名称】:SpecificationforQualificationofFrictionWeldingofMetals
【原文标准名称】:金属焊接摩擦的合格和规范
【标准号】:ANSI/AWSC6.2/C6.2M-2006
【标准状态】:现行
【国别】:美国
【发布日期】:2006
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:基础安全;控制;设计;破坏试验;设备安全;摩擦;接头设计;机器;材料规范;金属;无损检验;操作者;参数;合格;质量保证;再现性;安全;安全要求;试验要求;训练;焊接;焊接设备;焊机;焊接程序规范;焊缝
【英文主题词】:Basicsafety;Control;Design;Destructivetesting;Equipmentsafety;Friction;Jointdesigns;Machines;Materialsspecification;Metals;Non-destructivetesting;Operators;Parameters;Qualifications;Qualityassurance;Reproducibility;Safety;Safetyrequirements;Testingrequirements;Training;Welding;Weldingequipment;Weldingmachines;Weldingprocedurespecification;Welds
【摘要】:Thisspecificationprovidesforthequalificationoffrictionweldingmachines,procedures,andtrainingofweldingoperators.Qualificationoftheweldingprocedurespecification(WPS)includesthematerialspecificationsinvolved,weldjointdesign,destructiveandnondestructivetestingrequirements,aswellasguidelinesfordifferentcategoriesofqualityassurance.Qualificationofweldingequipmentincludesweldparametercontrol,weldreproducibility,andbasicsafetyrequirements.Weldingoperatorsrequiretrainingintheproperoperationoffrictionweldingequipmentandgeneralsafetyprocedures.TherequirementsforrequalificationoftheWPSandequipmentarealsogiven.
【中国标准分类号】:J33
【国际标准分类号】:25_160_10
【页数】:
【正文语种】:英语
Product Code:SAE AMS3892/8
Title:Tow or Yarn, Carbon Fibers, For Structural Composites, GF (OX) 400 (2758) Tensile Strength, 40 (276) Tensile Modulus
Issuing Committee:Ams P Polymeric Materials Committee
Scope: This specification covers one type of continuous multifilament carbon fibers in the form of a tow or yarn (when twisted). The weight per unit length of the tow or yarn is governed by the filament count which is identified by the supplier's grade or material designation. Carbon tow or yarn, derived from a polyacrylonitrile precursor, with typical 400 ksi (2758 MPa) tensile strength and 40 Msi (276 GPa) tensile modulus for use in polyimide matrix structural composites or others which may be exposed to 315 degrees C (599 degrees F) thermal conditions in air and which require high tensile strength and moderate modulus of elasticity in tension.