BS EN 60627-2001 X射线诊断成像设备.通用及胸部肿瘤防散射网格的特性
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【英文标准名称】:DiagnosticX-rayimagingequipment.Characteristicsofgeneralpurposeandmammographicanti-scattergrids
【原文标准名称】:X射线诊断成像设备.通用及胸部肿瘤防散射网格的特性
【标准号】:BSEN60627-2001
【标准状态】:现行
【国别】:英国
【发布日期】:2001-12-05
【实施或试行日期】:2001-12-05
【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】:反散射栅;壳体;定义;设计;诊断设备;距离;电气器具;电气工程;调焦点;几何的;格栅体系;成象;泄漏辐射;直线网格;乳腺X射线摄影术;作标记;数学计算;测量;测量电路;测量组织;测量仪器;测量技术;医疗器材;医疗放射照相术;医学放射学;医学科学;测量方法;参数;幻象电路;物理的;辐射质量;辐射学;比率;选择性;真空管电压;X射线;X射线仪;X射线设备;X射线电子管
【英文主题词】:Anti-scattergrids;Bodies;Definitions;Design;Diagnosticequipment;Distances;Electricappliances;Electricalengineering;Focusing;Geometric;Gridsystems;Imaging;Leakageradiation;Linegrids;Mammography;Marking;Mathematicalcalculations;Measurement;Measurementcircuits;Measurementset-up;Measuringinstruments;Measuringtechniques;Medicalequipment;Medicalradiography;Medicalradiology;Medicalsciences;Methodsformeasuring;Parameters;Phantoms;Physical;Radiationquality;Radiology;Ratios;Selectivities;Valvevoltages;X-ray;X-rayapparatus;X-rayequipment;X-raytubes
【摘要】:
【中国标准分类号】:C43
【国际标准分类号】:11_040_50
【页数】:32P.;A4
【正文语种】:英语
【英文标准名称】:Swiveljointsforaircraftjackingpads(rech.).
【原文标准名称】:机上起重支垫用回转接头(rech.)
【标准号】:NFL92-311-1955
【标准状态】:现行
【国别】:法国
【发布日期】:1955-10-01
【实施或试行日期】:1966-12-30
【发布单位】:(FR-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】:V22
【国际标准分类号】:49_100
【页数】:2P.;A4
【正文语种】:其他
【英文标准名称】:Plastics-Determinationofpunctureimpactbehaviourofrigidplastics-Part1:Non-instrumentedimpacttesting
【原文标准名称】:塑料硬质塑料冲孔性能的测定第1部分:非仪器冲击试验
【标准号】:ISO6603-1-2000
【标准状态】:现行
【国别】:国际
【发布日期】:2000-03
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;测定;定义;塑料;跌落试验;试验设备;冲击试验;穿透能量
【英文主题词】:Behaviour;Boards;Bolts;Bumptests;Definitions;Determination;Dimensions;Drop;Droptests;Impact;Impacttesting;Impacttests;Impairmentdamage;Lay;Materials;Materialstesting;Methodsofcalculation;Penetrationenergy;Plastics;Properties;Representations;Stiffness;Testequipment;Testreports;Testspecimens;Testing;Testingprocedures;Thermoplasticpolymers;Thermosettingpolymers;Trials
【摘要】:ThisInternationalStandardspecifiesmethodsforthedeterminationofpuncture-impactpropertiesofrigidplasticsintheformofflattestspecimens,suchasdiscsorsquarepieces,underdefinedconditions.Specimensmaybemouldeddirectly,cutfromsheetsortakenfromfinishedproducts.Differenttypesoftestspecimensandtestconditionsaredefined.Thesefalling-dartmethodsareusedtoinvestigatethebehaviourofplasticsheetingormouldingsundertheimpactofastrikerappliedperpendiculartotheplaneofthespecimen.ThispartofISO6603canbeusedifitissufficienttocharacterizetheimpactbehaviourofplasticsbyathresholdvalueofimpact-failureenergybasedonmanytestspecimens.ISO6603-2isusedifaforce-deflectionorforce-timediagram,recordedatnominallyconstantstrikervelocity,isnecessaryfordetailedcharacterizationoftheimpactbehaviour.Thesetestmethodsareapplicabletospecimenswithathicknessbetween1mmand4mm.NOTEForthicknesseslessthan1mm,ISO7765shouldpreferablybeused.Thicknessesgreaterthan4mmmaybetestediftheequipmentissuitable,butthetestfallsoutsidethescopeofISO6603-1andISO6603-2.Thesemethodsaresuitableforusewiththefollowingtypesofmaterial:—rigidthermoplasticmouldingandextrusionmaterials,includingfilled,unfilledandreinforcedcompoundsandsheets;—rigidthermosettingmouldingandextrusionmaterials,includingfilledandreinforcedcompounds,sheetsandlaminates;—fibre-reinforcedthermosetandthermoplasticcompositesincorporatingunidirectionalornon-unidirectionalreinforcementssuchasmats,wovenfabrics,wovenrovings,choppedstrands,combinationandhybridreinforcements,rovings,milledfibresandsheetsmadefrompre-impregnatedmaterials(prepregs).Thesemethodsarealsoapplicabletospecimenswhichareeithermouldedormachinedfromfinishedproducts,laminatesandextrudedorcastsheet.Thetestresultsarecomparableonlyiftheconditionsofpreparationofthespecimens,theirdimensionsandsurfacesaswellasthetestconditionsarethesame.Inparticular,resultsdeterminedonspecimensofdifferentthicknesscannotbecomparedwithoneanother(seeannexEofISO6603-2:—).Comprehensiveevaluationofthereactiontoimpactstressrequiresthatdeterminationsbemadeasafunctionofimpactvelocityandtemperaturefordifferentmaterialvariables,suchascrystallinityandmoisturecontent.Theimpactbehaviouroffinishedproductscannotbepredicteddirectlyfromthistest,butspecimensmaybetakenfromfinishedproducts(seeabove)fortestbythesemethods.Testdatadevelopedbythesemethodsshouldnotbeusedfordesigncalculations.However,informationonthetypicalbehaviourofthematerialcanbeobtainedbytestingatdifferenttemperaturesandimpactvelocities(seeannexDofISO6603-2:—),byvaryingthethickness(seeannexEofISO6603-2:—)andbytestingspecimenspreparedunderdifferentconditions.TwostatisticalmethodsoftestaredescribedinthispartofISO6603:—MethodA:staircasemethod(individual)(preferred)Inthismethod,auniformenergyincrementisemployedduringtesting.Theenergyisdecreasedorincreasedbytheuniformincrementaftertestingeachspecimen,dependingupontheobservedresult(passorfail)fortheprecedingtest.—MethodB:groupmethod(optional)Inthismethod,successivegroupsofatleasttentestspecimensaretested.Theimpactfailureenergyiscalculatedbystatistics.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:21P;A4
【正文语种】:英语
