ANSI/ASTM D6681-2004 卡特皮勒1P试验程序评价高速单缸柴油发动机中发动机油的试验方法

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下一篇: BS ISO 15169-2004 石油和液态石油产品.使用混合罐测量系统测定立式圆筒状油罐中烃类的体积、密度和质量

【英文标准名称】:Methodsofsamplingandtestforcarbonaceousmaterialsusedinaluminiummanufacture-Coldrammingpastes-Determinationofthethermalconductivityofbakedrammedpaste
【原文标准名称】:制铝工业用炭素材料取样与试验方法.第4部分:冷捣糊块.第12节:烘焙捣糊块热导率测定
【标准号】:BS6043-4.12-1992
【标准状态】:现行
【国别】:英国
【发布日期】:1992-06-15
【实施或试行日期】:1992-06-15
【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】:试验条件;铝;热试验;冶金工艺学;碳素物质测定;金属精炼;糊料;导热性;试样制备;芳族化合物;脂族化合物
【英文主题词】:Aliphaticcompounds;Aluminium;Aromaticcompounds;Carbonaceousmatterdetermination;Metalrefining;Pastes;Productionmetallurgy;Samplingmethods;Specimenpreparation;Testingconditions;Thermalconductivity;Thermaltesting
【摘要】:Preparationofabaked,rammedpiece,determinationoftemperaturegradientsinanon-oxidisingatmosphereusingasplitcolumnmethod.TobereadinconjunctionwithBS1902-5.8,BS6043-4.0,BS6043-4.1,BS6043-4.6,BS6043-4.7
【中国标准分类号】:D52
【国际标准分类号】:71_100_10
【页数】:8P.;A4
【正文语种】:英语


Product Code:SAE ARP1323
Title:Type Measurements of Aircraft Interior Sound Pressure Levels During Cruise
Issuing Committee:A-21 Aircraft Noise Measure Noise Aviation Emission Modeling
Scope: The primary measurement procedure recommended in this ARP includes the recording of sound pressure signals in the interior of an airplane during steady state cruise conditions with analysis after the flight into octave band (or one-third octave band) sound pressure levels. Alternatively, spectral analyses of the sound pressure signals may be performed directly on board an airplane. Though less flexible than the primary measurement procedure, the alternative procedure offers the advantage of immediate availability of frequency band or frequency weighted sound pressure levels that are consistent with those measured in accordance with the procedures in ISO 5129. In view of the range of possible measurement this ARP provides electroacoustical performance requirements for a complete system from a microphone to the readout device. Various individual components of a measurement system may be selected so long as the total measurement system complies with the requirements. Recommendations of this ARP are not intended to satisfy the stringent requirements for airplane design or development. Also, they may not be directly applicable to measurements of sound pressure levels in the interior of helicopters or general aviation airplanes where special constraints on measurement locations and test procedures may exist. Specific recommendations for measurement of interior sound pressure levels in helicopters are given in 2.2.