SAE AMS4273 Aluminum Alloy, Sheet and Plate (2424-T3 Flat Sheet and Plate) Solution Heat Treated and Cold Worked
时间:2024-05-01 14:19:38 来源: 标准资料网 作者：标准资料网 阅读：8361
Product Code:SAE AMS4273
Title:Aluminum Alloy, Sheet and Plate (2424-T3 Flat Sheet and Plate) Solution Heat Treated and Cold Worked
Issuing Committee:Ams D Nonferrous Alloys Committee
Scope:This specification covers an aluminum alloy in the form of sheet.
【英文标准名称】:Fasteners.Threadedrods.ProductgradesAandB.
【原文标准名称】:紧固件.螺纹杆.A和B级产品
【标准号】:NFE25-136-1986
【标准状态】:现行
【国别】:法国
【发布日期】:1986-12-01
【实施或试行日期】:1986-12-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:J13
【国际标准分类号】:21_060_99
【页数】:6P;A4
【正文语种】:其他
【英文标准名称】:StandardTestMethodforMeasuringBinocularDisparityinTransparentParts
【原文标准名称】:测量透明部件中双筒镜差异的试验方法
【标准号】:ASTMF1181-1996(2003)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:F07.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:透明度;光学测量;试验;测量技术
【英文主题词】:angulardeviation;binoculardisparity;binocularvision;diplopia;doublevision
【摘要】:DiplopiaordoublingofvisionoccurswhenthereissufficientbinoculardisparitypresentsothattheboundsofPanum’area(theareaofsinglevision)isexceeded.Thisconditionariseswheneveroneobjectissignificantlycloser(orfarther)thananothersothatlookingatonewillcausetheimageoftheothertoappeardouble.Thiscanbeeasilydemonstrated:Closeoneeyeandlookataclock(orotherobject)onadistantwall.Nowplaceyourthumbtoonesideoftheimageoftheclock.Nowopenbotheyes.Ifyoulookattheclock,youshouldseetwothumbs.Ifyoulookatyourthumb,youshouldseetwoclocks.ComplaintsfrompilotsflyingaircraftequippedwithwidefieldofviewHUDssuchastheLANTIRNHUDindicatedthattheywereexperiencingdiscomfort(eyefatigue,headaches,andsoforth.)orseeingeithertwotargetsortwopipperswhenusingtheHUD.SubsequentinvestigationsrevealedthattheproblemarosefromthefactthatthetransparencyandtheHUDsignificantlychangedtheopticaldistancesofthetargetandtheHUDimagerysothatbinoculardisparitywhichexceededPanum’areawasinduced.Useofthistestmethodprovidesaprocedurebywhichtheamountofbinoculardisparitybeingexperiencedbyahumanoperatorduetothepresenceofatransparentpartinhisfieldofviewmaybeeasilyandpreciselymeasured.1.1Thistestmethodcoverstheamountofbinoculardisparitythatisinducedbytransparentpartssuchasaircraftwindscreens,canopies,HUDcombiningglasses,visors,orgoggles.Thistestmethodmaybeappliedtopartsofanysize,shape,orthickness,individuallyorincombination,soastodeterminethecontributionofeachtransparentparttotheoverallbinoculardisparitypresentinthetotal"viewingsystem"beingusedbyahumanoperator.1.2Thistestmethodrepresentsoneofseveraltechniquesthatareavailableformeasuringbinoculardisparity,butistheonlytechniquethatyieldsaquantitativefigureofmeritthatcanberelatedtooperatorvisualperformance.1.3ThistestmethodemploysapparatuscurrentlybeingusedinthemeasurementofopticalangulardeviationunderMethodF801.1.4Thevaluesstatedininch-poundunitsarethepreferredunits.Thevaluesinparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:
【页数】:3P.;A4
【正文语种】: