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WJ 2696-2008 装甲车辆振动消除应力技术要求

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标准名称：装甲车辆振动消除应力技术要求
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Product Code:SAE J1060
Title:Subjective Rating Scale for Evaluation of Noise and Ride Comfort Characteristics Related to Motor Vehicle Tires
Issuing Committee:Vehicle Sound Level Advisory Group
Scope:This SAE Recommended Practice establishes a rating scale for subjective evaluations of noise and discomfort in motor vehicles. Through test procedures utilizing specific vehicles on specific roads, the scale may be utilized to assess the relative contributions of tires to noise and discomfort. The noise and ride comfort characteristics attributed to automotive tires have traditionally been estimated by subjectively assigning number designations (commonly on a 1 to 10 scale) to the audible and tactile sensations observed while traversing a given road course in a vehicle equipped with the tires under evaluation. Regardless of advances in objective measurements of tire properties related to noise and discomfort, subjective evaluation will continue to be necessary for the purpose of establishing the significance of such measurements. The rating scale of this recommendation is applicable to assessment of each of the wide variety of audible and tactile disturbances referred to by such terms as bump, thump, slap, shake, etc.【英文标准名称】:StandardTestMethodforDeterminationofDissolvedAlkaliandAlkalineEarthCationsandAmmoniuminWaterandWastewaterbyIonChromatography
【原文标准名称】:用离子色谱法测定水及废水中溶解的碱及碱土阳离子及铵的标准试验方法
【标准号】:ASTMD6919-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D19.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:alkaliandalkalineearthcations;ammoniumcation;conductivitydetection;ionchromatography;wastewater;wate,Alkalineearths/alkalies;Ammoniumcations;Calciumcontent--water;Cations;Conductivitydetectors/detection;Dissolvedalkali;Drinkingwat
【摘要】:Thismethodisapplicabletothesimultaneousdeterminationofdissolvedalkaliandalkalineearthcationsandammoniuminwaterandwastewaters.Alkaliandalkalineearthcationsaretraditionallydeterminedbyusingspectroscopictechniques,suchasAASorICP;whereasammoniumcanbemeasuredbyusingavarietyofwetchemicalmethods,includingcolorimetry,ammonia-selectiveelectrode,andtitrimetry.However,ionchromatographyprovidesarelativelystraightforwardmethodforthesimultaneousdeterminationofcations,suchaslithium,sodium,potassium,calcium,magnesium,andammonium,infewerthan20x2013;30min.1.1Thistestmethodisvalidforthesimultaneousdeterminationoftheinorganicalkaliandalkalineearthcations,lithium,sodium,potassium,magnesium,andcalcium,aswellastheammoniumcationinreagentwater,drinkingwater,andwastewatersbysuppressedandnonsuppressedionchromatography.1.2Theanticipatedrangeofthemethodis0.05x2013;200mg/L.Thespecificconcentrationrangestestedforthismethodforeachcationwereasfollows(measuredinmg/L):Lithium
0.4x2013;10.0
Sodium
4.0x2013;40.0
Ammonium
0.4x2013;10.0
Potassium
1.2x2013;20.0
Magnesium
2.4x2013;20.0
Calcium
4.0x2013;40.0