【英文标准名称】:Hydraulicfluidpower—Determinationofthefluid-bornenoisecharacteristicsofcomponentsandsystems—Part3:Measurementofhydraulicimpedance
【原文标准名称】:液压流体动力.部件和系统中流体噪音特性的测定.第3部分:液压阻力的测量
【标准号】:ISO15086-3-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-12-15
【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/TC131
【标准类型】:()
【标准水平】:()
【中文主题词】:声学测量;声学试验;组件;定义;测定;流体技术;流体;液压传动;液压泵;液压传动系统;液压装置;阻抗;干扰;液体;测量;测量技术;噪声(环境的);噪声测量;参数;管;设备;高压液体;声音传播;声传输;声速;试验;试验条件;速度测量
【英文主题词】:Acousticmeasurement;Acoustictesting;Components;Definition;Definitions;Determination;Fluidtechnology;Fluids;Hydraulicfluidpower;Hydraulicpumps;Hydraulictransmissionsystems;Hydraulics;Impedance;Interferences;Liquids;Measurement;Measuringtechniques;Noise(environmental);Noisemeasurements;Parameters;Pipes;Plant;Pressureliquids;Soundpropagation;Soundtransmission;Soundvelocity;Testing;Testingconditions;Velocitymeasurement
【摘要】:ThispartofISO15086describestheprocedureforthedeterminationoftheimpedancecharacteristicsofhydrauliccomponents,bymeansofmeasurementsfrompressuretransducersmountedinapipe.ThispartofISO15086isapplicabletopassivecomponents,irrespectiveofsize,operatingundersteady-stateconditions,overafrequencyrangefrom10Hzto3kHz.
【中国标准分类号】:J20
【国际标准分类号】:17_140_20;23_100_01
【页数】:32P.;A4
【正文语种】:英语


【英文标准名称】:Cylindricalhelicalspringsmadefromrectangularandsquaresectionwireandbar-Guidetocalculationanddesign-Compressionsprings
【原文标准名称】:矩形和方型线材和棒材制的圆柱形螺旋式弹簧.计算和设计指南.压缩弹簧
【标准号】:BS8726-1-2002
【标准状态】:现行
【国别】:英国
【发布日期】:2002-09-25
【实施或试行日期】:2002-09-25
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:四方形;压缩弹簧;扁形;螺旋弹簧;弹簧;尺寸公差;长方形;设计;尺寸;金属线;圆柱形;棒材;设计计算
【英文主题词】:Bars(materials);Compressionsprings;Cylindricalshape;Design;Designcalculations;Dimensionaltolerances;Dimensions;Helicalsprings;Rectangularshape;Springs;Squareshape;Wires
【摘要】:ThisBritishStandardprovidesguidanceonthedesignofparallelsidedhelicalcompressionspringsmanufacturedfromrectangularandsquaresectionwireandbar.Thisstandardappliesonlytospringsmadefromrectangularsectionmaterialwheretheratioofradialdimension,6,totheaxialdimension,h,termedtheshapefactor,m,isnotgreaterthan2.5andnotlessthan0.4.NOTE1Thisappliesbecause,outsidetheshapefactorrange2.5to0.4,itisdifficulttocoilaspringaccurately.NOTE2Therearenumerousmethodsofcalculatingtheparametersnecessaryforthedesignofspringsandinitiallythedesignerisfreetouseanyoneofthese.Threetypesofendcoilsareprovidedfor,i.e.openend,closedendandclosedandgroundend,thelastofthesebeingapplicableonlytospringswheretheaxialdimensionofmaterialis0.5mmorgreater.ThisBritishStandarddifferentiatesbetweenspringsthathaveorhavenotbeenstressrelievedafterforming,designatedgroupAsprings,andsprings,thematerialofwhichhasundergoneastructuralchangebyheattreatmentafterforming,designatedgroupBsprings.ThisBritishStandardgivestwomethodsofspecifyingspringsforgeneralpurposesandonemethodoftestingsprings.
【中国标准分类号】:J26
【国际标准分类号】:21_160
【页数】:34P;A4
【正文语种】:英语