MIL-P-47226A
作者:标准资料网 时间:2024-05-10 00:59:14 浏览:8262
来源:标准资料网
MIL-P-47226A, MILITARY SPECIFICATION, PLATING, COPPER, ELECTROLESS (FOR NON-CONDUCTING MATERIAL) (30 MAR 1992)., This specification covers the requirements forchemically-deposited conductive copper films used to coatelectrically non-conducting materials.
【英文标准名称】:XMLEncodingofGenericCommonApplicationLanguage(CAL)
【原文标准名称】:一般公共应用语言(CAL)的XML编码
【标准号】:ANSI/EIA-844-2001
【标准状态】:作废
【国别】:美国
【发布日期】:2001
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:信息技术;计算机软件;程序设计语言;XML语言;数据格式
【英文主题词】:extensiblemarkuplanguage;dataformats;computersoftware;informationtechnology;programminglanguages
【摘要】:
【中国标准分类号】:M11
【国际标准分类号】:35_060
【页数】:
【正文语种】:英语
【英文标准名称】:Experimentaldeterminationofmechanicalmobility-Measurementusingimpactexcitationwithanexciterwhichisnotattachedtothestructure
【原文标准名称】:机械机动性实验测定.第5部分:使用激发器(与结构不连接)的冲击激励作用进行测量
【标准号】:BS6897-5-1995
【标准状态】:现行
【国别】:英国
【发布日期】:1995-03-15
【实施或试行日期】:1995-03-15
【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】:机械试验;校准;振动试验;傅里叶分析;测量仪器;声学设备;结构;频率响应;信号处理;准确度;稳定性;误差;机械冲击;传感器;震动计;振动;加工设备;误差修正;冲击试验;建筑物;试验设备;振动测量
【英文主题词】:Buildings;Definition;Definitions;Determination;Frequencyresponse;Machines;Measurement;Mobility;Shock;Structures;Testing;Tests;Vibration;Vibrationtests
【摘要】:ThispartofISO7626specifiesproceduresformeas-uringmechanicalmobilityandotherfrequency-responsefunctionsofstructuresexcitedbymeansofatranslationalimpulsiveforcegeneratedbyanexciterwhichisnotattachedtothestructureundertest.Itisapplicabletothemeasurementofmobility,acceleranceordynamiccompliance,eitherasadrivingpointmeasurementorasatransfermeasurement,usingimpactexcitation.Otherexcitationmethods,suchassteprelaxationandtransientrandom,leadtosignal-processingrequirementssimilartothoseofimpactdata.However,suchmethodsareoutsidethescopeofthispartofISO7626becausetheyinvolvetheuseofanexciterwhichisattachedtothestruc-ture.ThesignalanalysismethodscoveredareallbasedonthediscreteFouriertransform.Thisrestrictioninscopeisbasedsolelyonthewideavailabilityofequipmentwhichimplementsthesemethodsandonthelargebaseofexperienceinusingthesemethods.Itisnotintendedtoexcludetheuseofothermethodscurrentlyunderdevelopment.Impactexcitationisalsowidelyusedtoobtainuncali-bratedfrequency-responseinformation.Forexample,aquickimpacttestwhichobtainsapproximatenaturalfrequenciesandmodeshapescanbequitehelpfulinplanningarandomorsinusoidaltestforaccuratemo-bilitymeasurements.However,theseusesofimpactexcitationtoobtainqualitativeresultsshouldnotbeconfusedwithitsuseformobilitymeasurements.ThispartofISO7626islimitedtotheuseofimpactexcitationtechniquesformakingaccuratemobilitymeasurements.
【中国标准分类号】:J04
【国际标准分类号】:17_160
【页数】:32P;A4
【正文语种】:英语
