SJ 2638.6-1985 冷冲模 推入式活动模柄组合
作者:标准资料网 时间:2024-05-10 12:08:33 浏览:8862
来源:标准资料网
基本信息
| 标准名称： | 冷冲模 推入式活动模柄组合 |
| 英文名称： | Cold press dies-Assembly of moving shank (push-in) |
| 中标分类： |
农业、林业 >>
农业、林业综合 >>
技术管理 |
| 替代情况： | SJ 536-1973 |
| 发布日期： | 1985-12-26 |
| 实施日期： | 1986-07-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 1页 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 农业 林业 农业 林业综合 技术管理
Product Code:SAE AIR1316
Title:Airline Tow Tractor - Baggage/Cargo Factors for Design Consideration
Issuing Committee:Age-2c Vehicle Maintenance And Aircraft Servicing Committee
Scope:The following methods for the determination of Tractive Effort (TE), Drawbar Pull (DBP), Gross Vehicle Weight (GVW), Engine Torque (T), Engine Brake Horsepower (BHP), and Braking Capacity are presented for the purpose of assisting potential buyers and users of airline baggage/cargo tow tractors in the evaluation of their towing requirements and the capabilities of the various vehicles as offered by the equipment manufacturers. In this analysis, exception is taken to the more prevalent tractor DBP/GVW formulas (generally used by ATA, SAE, equipment manufacturers, etc.) which were developed primarily for application to aircraft tow tractors. These tractors differ from the smaller baggage/cargo two tractors in that the former utilizes a four-wheel drive traction system and the latter uses only a two-wheel (rear) traction system. In the case of the four-wheel drive system, all of the tractor GVW can be applied for traction purposes (with a consideration for friction and slippage). This is not the case for the two-wheel drive tractor where, for the most part, only portion of the tractor GVW supported by the rear drive wheels can be utilized for traction. This generalization is modified by weight transfer and hitch height as developed in detail in this document. Other factors are also relevant to towing performance and will be discussed in this analysis.【英文标准名称】:Semiconductordevices-Mechanicalandclimatictestmethods-Part37:Boardleveldroptestmethodusinganaccelerometer
【原文标准名称】:半导体装置.机械和气候试验方法.第37部分:用加速计的电路板级落锤试验方法
【标准号】:IEC60749-37-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-01
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC47
【标准类型】:()
【标准水平】:()
【中文主题词】:加速计;应用;壳体;气候的;气候试验;部件;定义;跌落试验;电气工程;电子的;电子设备及元件;失败分析;失败标准;仪器;力学;机械测试;印制电路板;半导体器件;半导体;测试
【英文主题词】:Accelerationmeasuringinstruments;Accelerometers;Applications;Bodies;Climatic;Climatictests;Components;Definitions;Design;Droptests;Electricalengineering;Electronic;Electronicequipmentandcomponents;Failureanalysis;Failurecriterion;Instruments;Mechanic;Mechanicaltesting;Printed-circuitboards;Semiconductordevices;Semiconductors;Standardizations;Testing
【摘要】:ThispartofIEC60749providesatestmethodthatisintendedtoevaluateandcomparedropperformanceofsurfacemountelectroniccomponentsforhandheldelectronicproductapplicationsinanacceleratedtestenvironment,whereexcessiveflexureofacircuitboardcausesproductfailure.Thepurposeistostandardizethetestboardandtestmethodologytoprovideareproducibleassessmentofthedroptestperformanceofsurface-mountedcomponentswhileproducingthesamefailuremodesnormallyobservedduringproductleveltest.Thepurposeofthisstandardistoprescribeastandardizedtestmethodandreportingprocedure.Thisisnotacomponentqualificationtestandisnotmeanttoreplaceanysystemleveldroptestthatmaybeneededtoqualifyaspecifichandheldelectronicproduct.ThestandardisnotmeanttocoverthedroptestrequiredtosimulateshippingandhandlingrelatedshockofelectroniccomponentsorPCBassemblies.TheserequirementsarealreadyaddressedintestmethodssuchasIEC60749-10.Themethodisapplicabletobothareaarrayandperimeter-leadedsurfacemountedpackages.Thistestmethodusesanaccelerometertomeasurethemechanicalshockdurationandmagnitudeappliedwhichisproportionaltothestressonagivencomponentmountedonastandardboard.ThetestmethoddescribedinthefutureIEC60749-401usesstraingaugetomeasurethestrainandstrainrateofaboardinthevicinityofacomponent.Thedetailedspecificationstateswhichtestmethodistobeused.
【中国标准分类号】:L30
【国际标准分类号】:31_080_01
【页数】:39P;A4
【正文语种】:英语
