Product Code:SAE MA2003
Title:Rotary Flexure Testing of Hydraulic Tubing Joints and Fittings
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope: This standard establishes flexure test procedures to determine and classify the fatigue strengths of reconnectable or permanent hydraulic tube joints. The procedure is intended for conducting flexure tests of fittings and joints with high strength hydraulic tubes of various alloys such as corrosion resistant steel, Nimonic, titanium and aluminum alloy hydraulic tube for use on commercial and military aircraft. A mean stress is applied by holding system pressure in the specimens and then flexing in a rotary bending test machine. This test method conforms with ARP 1185 for inch-dimensional tubing and fittings.【英文标准名称】:StandardTestMethodforSteadyStateandDynamicThermalPerformanceofTextileMaterials
【原文标准名称】:纺织材料稳态和动态热性能的标准试验方法
【标准号】:ASTMD7024-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:D13.51
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Thismethodprovidesforthedeterminationofthesteadystatethermalresistanceofafabricorlayersoffabricsandforthedeterminationofthetemperatureregulatingfactor(TRF)asdefinedbelow.Thistestmethodisconsideredsatisfactoryforacceptancetestingofcommercialshipmentsbecausetheroundrobintestingshowshighprecisionandnobiasfortestingoftextilefabricsandfoams.5.1.1Iftherearedifferencesofpracticalsignificancebetweenreportedtestresultsfortwolaboratories(ormore),comparativetestshouldbeperformedtodetermineifthereisastatisticalbiasbetweenthem,usingcompetentstatisticalassistance.Asaminimum,usethesamplesforsuchacomparativetestthatareashomogeneousaspossible,drawnfromthesamelotofmaterialasthesamplesthatresultedindisparateresultsduringinitialtestingandrandomlyassignedinequalnumberstoeachlaboratory.Thetestresultsfromthelaboratoriesinvolvedshouldbecomparedusingastatisticaltestforunpaireddata,aprobabilitylevelchosenpriortothetestingseries.Ifbiasisfound,eitheritscausemustbefoundandcorrected,orfuturetestresultsforthatmaterialmustbeadjustedinconsiderationoftheknownbias.Thistestmethodisusefulinqualityandcostcontrolduringmanufacture.Itcanbeusedtoestablishcriteriaforestablishingthermalandcomfortparametersfortextilesparticularlyusedintheclothingindustry.1.1Thistestmethodcoversthedeterminationoftheoverallthermaltransmissioncoefficientduetoconductionfordryspecimensoftextilefabrics,battings,andothermaterialsandthedeterminationofthetemperatureregulatingfactor(TRF)definedbelow.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W04
【国际标准分类号】:59_080_01
【页数】:4P.;A4
【正文语种】: