MIL-PRF-907F
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来源:标准资料网
MIL-PRF-907F, PERFORMANCE SPECIFICATION: ANTISEIZE THREAD COMPOUND, HIGH TEMPERATURE (17 NOV 2004) [SUPERSEDING MIL-A-907D]., . This specification covers antiseize compound for use on threads of steel nuts, studs, bolts and other mating surfaces, including those of superheated steam installations, at temperatures up to 1050 degrees Fahrenheit (degrees F) (566 degrees Celsius (degrees C)).
【英文标准名称】:Showerunits-Specificationforprefabricatedshowerenclosuresandshowercabinets
【原文标准名称】:淋浴装置.第3部分:预制淋浴罩和淋浴室规范
【标准号】:BS6340-3-1985
【标准状态】:作废
【国别】:英国
【发布日期】:1985-10-31
【实施或试行日期】:1985-10-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:卫生器具;不透水性试验;预制配件;设计;淋浴设备;性能;挠曲试验
【英文主题词】:sanitaryappliances;design;watertightnesstests;showers;performance;deflectiontests;prefabricatedparts
【摘要】:
【中国标准分类号】:Q81
【国际标准分类号】:91_140_70
【页数】:8P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodsforStressRelaxationTestsforMaterialsandStructures
【原文标准名称】:材料和结构件的应力松弛试验
【标准号】:ASTME328-2002
【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】:
【英文主题词】:bendingrelaxation;bolting;compressionrelaxation;hoopstresses;riveting;springs;stressrelaxation;tensionrelaxation;torsionrelaxation
【摘要】:Relaxationtestdataarenecessarywhendesigningmostmechanicallyfastenedjointstoassurethepermanenttightnessofboltedorrivetedassemblies,pressorshrink-fitcomponents,rolled-intubes,etc.Otherapplicationsincludepredictingthedecreaseinthetightnessofgaskets,inthehoopstressofsolderlesswrappedconnections,intheconstrainingforceofsprings,andthestabilityofwiretendonsinprestressedconcrete.Theabilityofamaterialtorelaxathigh-stressconcentrationssuchasarepresentatnotches,inclusions,cracks,holes,fillets,etc.,maybepredictedfromstressrelaxationdata.Suchtestdataarealsousefultojudgetheheat-treatmentconditionnecessaryforthethermalreliefofresidualinternalstressesinforgings,castings,weldments,machinedorcold-workedsurfaces,etc.Thetestsoutlinedinthesemethodsarelimitedtoconditionsofapproximatelyconstantconstraintandenvironment.Thetestresultsarehighlysensitivetosmallchangesinenvironmentalconditionsandthusrequireprecisecontroloftestconditionsandmethods.Thereproducibilityofdatawilldependonthemannerwithwhichalltestconditionsarecontrolled.Theeffectsofagingorresidualstressmaysignificantlyaffectresults,asmayvariationsinmaterialcomposition.Note18212;Themethodoftestingforthestressrelaxationofplasticshasbeenwithdrawnfromthisstandard,andtheresponsibilityhasbeentransferredtoPracticeD2991.1.1Thesetestmethodscoverthedeterminationofthetimedependenceofstress(stressrelaxation)inmaterialsandstructuresunderconditionsofapproximatelyconstantconstraint,constantenvironment,andnegligiblevibration.Intheproceduresrecommended,thematerialorstructureisinitiallyconstrainedbyexternallyappliedforces,andthechangeintheexternalforcenecessarytomaintainthisconstraintisdeterminedasafunctionoftime.1.2Specificmethodsforconductingstressrelaxationtestsonmaterialssubjectedtotension,compression,bendingandtorsionstressesaredescribedinPartsA,B,C,andD,respectively.Thesetestmethodsalsoincluderecommendationsforthenecessarytestingequipmentandfortheanalysisofthetestdata.1.3Itisrecognizedthatthelongtimeperiodsrequiredforthesetypesoftestsareoftenunsuitedforroutinetestingorforspecificationinthepurchaseofmaterial.However,thesetestsarevaluabletoolsinobtainingpracticaldesigninformationonthestressrelaxationofmaterialssubjectedtotheconditionsenumerated,andininvestigationsofthefundamentalbehaviorofmaterials.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:19_020
【页数】:13P.;A4
【正文语种】: