SAE J1227 Assessing Cleanliness of Hydraulic Fluid Power Components and Systems

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Product Code:SAE J1227
Title:Assessing Cleanliness of Hydraulic Fluid Power Components and Systems
Issuing Committee:Cttc C1, Hydraulic Systems
Scope: To describe laboratory methods for determining and reporting the contaminant level of the wetted portion of hydraulic fluid power components, parts, subsystems and systems, and of fill fluids. For each type of item it provides a method of obtaining the liquid sample and the contamination level thereof. It also includes procedures for establishing a sampling plan and guidelines for establishing levels of acceptance, but does not set those levels. To provide a basis for measuring and reporting cleanliness levels so that built-in contamination and premature failures of hydraulic systems can minimized.
Rationale: To describe laboratory methods for determining and reporting the contaminant level of the wetted portion of hydraulic fluid power components, parts, subsystems and systems, and of fill fluids. For each type of item it provides a method of obtaining the liquid sample and the contamination level thereof. It also includes procedures for establishing a sampling plan and guidelines for establishing levels of acceptance, but does not set those levels. To provide a basis for measuring and reporting cleanliness levels so that built-in contamination and premature failures of hydraulic systems can minimized.
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【英文标准名称】:Plastics-Determinationoftensilepropertiesathighstrainrates
【原文标准名称】:塑料.测定高应变率拉伸特性
【标准号】:BSISO18872-2007
【标准状态】:现行
【国别】:英国
【发布日期】:2007-05-31
【实施或试行日期】:2007-05-31
【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】:定义;测定;挤压成型;材料测试;模塑材料;模制材料(成形部件);塑料;塑料模制材料;特性;试样;应变;拉伸应变;抗拉强度;拉伸应力试验;抗拉测试;抗拉试验;试验设备;测试;测试条件
【英文主题词】:Definitions;Determination;Extrusion;Materialstesting;Mouldingmaterials;Mouldings(shapedsection);Plastics;Plasticsmouldingmaterial;Properties;Samples;Strain;Tensilestrain;Tensilestrength;Tensilestresstest;Tensiletesting;Tensiletests;Testequipment;Testspecimens;Testing;Testingconditions
【摘要】:ISO18872:2007specifiesproceduresfordeterminingthetensilepropertiesofmouldingandextrusionplasticsoverawiderangeofstrainrate,includinghighratesappropriatetoimpact-loadingsituations.Propertiesaredeterminedthroughacombinationofmeasurementsatlowandmoderatestrainrates,theuseofmathematicalfunctionstomodeltheseresults,therate-dependenceofparametersandthedeterminationofparametersathighstrainratesbyextrapolation.Tensilepropertiesathighstrainratesarethenderivedbycalculation.Inthisway,theexperimentalproblemsandassociatederrorswiththemeasurementofpropertiesathighratesareavoided.
【中国标准分类号】:G31
【国际标准分类号】:83_080_10
【页数】:20P.;A4
【正文语种】:英语


基本信息
标准名称:900MHzDMA数字蜂窝移动通信网移动业务交换中心与基站子系统间接上
中标分类: 通信、广播 >> 通信网 >> 通信网传输系统接口
ICS分类: 电信、音频和视频技术 >> 电信系统
发布部门:中华人民共和国邮电部
发布日期:1996-06-05
实施日期:1996-03-05
首发日期:1900-01-01
作废日期:1900-01-01
提出单位:邮电部电信科学研究规划院
归口单位:邮电部电信科学研究规划院
起草单位:邮电部电信传输研究所
起草人:魏然
出版社:人民邮电出版社
出版日期:1996-03-05
页数:54页
书号:155066.2-11070
适用范围

本标准规定了900M HzT DMA数字蜂窝移动通信网移动业务交换中心与基站子系统间接0的原则和技术要求。
本标准适用于采用TDMA技术的900M Hz数字蜂窝移动通信系统。

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所属分类: 通信 广播 通信网 通信网传输系统接口 电信 音频和视频技术 电信系统