HB 3543-1985 单齿铰刀 d＝0.5~0.95mm
时间:2024-04-20 01:55:04 来源: 标准资料网 作者：标准资料网 阅读：9908
基本信息
| 标准名称： | 单齿铰刀 d＝0.5~0.95mm |
| 中标分类： |
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| 发布日期： | 1985-06-07 |
| 实施日期： | 1985-12-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 1页 |
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所属分类：
Product Code:SAE AS5173
Title:Fitting, Bushing, Port Reducer
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope:No scope available.【英文标准名称】:StandardTestMethodforShearModulusatRoomTemperature
【原文标准名称】:室温下剪切模量的标准试验方法
【标准号】:ASTME143-2002
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:E28.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:剪切模量;试验
【英文主题词】:shearmodulus;stress-straindiagram;torque-twistdiagram
【摘要】:ShearmodulusisamaterialpropertyusefulincalculatingcomplianceofstructuralmaterialsintorsionprovidedtheyfollowHooke’law,thatis,theangleoftwistisproportionaltotheappliedtorque.Examplesoftheuseofshearmodulusareinthedesignofrotatingshaftsandhelicalcompressionsprings.Note38212;Formaterialsthatfollownonlinearelasticstress-strainbehavior,thevalueoftangentorchordshearmodulusisusefulforestimatingthechangeintorsionalstraintocorrespondingstressforaspecifiedstressorstress-range,respectively.Suchdeterminationsare,however,outsidethescopeofthisstandard.(SeeforexampleRef(1).)3Theproceduralstepsandprecisionoftheapparatusandthetestspecimensshouldbeappropriatetotheshapeandthematerialtype,sincethemethodappliestoawidevarietyofmaterialsandsizes.Precisedeterminationofshearmodulusdependsonthenumerousvariablesthatmayaffectsuchdeterminations.5.3.1Thesefactorsincludecharacteristicsofthespecimensuchasresidualstress,concentricity,wallthicknessinthecaseoftubes,deviationfromnominalvalue,previousstrainhistoryandspecimendimension.5.3.2Testingconditionsthatinfluencetheresultsinclude:axialpositionofthespecimen,temperatureandtemperaturevariations,andmaintenanceoftheapparatus.5.3.3Interpretationofdataalsoinfluencesresults.1.1Thistestmethodcoversthedeterminationofshearmodulusofstructuralmaterials.Thistestmethodislimitedtomaterialsinwhich,andtostressesatwhich,creepisnegligiblecomparedtothestrainproducedimmediatelyuponloading.Elasticpropertiessuchasshearmodulus,Young'smodulus,andPoisson'sratioarenotdeterminedroutinelyandaregenerallynotspecifiedinmaterialsspecifications.Precisionandbiasstatementsforthesetestmethodsarethereforenotavailable.1.2Valuesstatedininch-poundunitsaretoberegardedasthestandard.SIunitsareprovidedforinformationonly.1.3ttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H23
【国际标准分类号】:77_040_10
【页数】:5P.;A4
【正文语种】: