TB/T 1922-1987 铁路站场扩音转接机

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基本信息
标准名称:铁路站场扩音转接机
中标分类: 铁路 >> 铁路通信 >> 铁路通信设备
发布日期:
实施日期:2002-12-01
首发日期:
作废日期:
出版日期:
页数:15页
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所属分类: 铁路 铁路通信 铁路通信设备
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【英文标准名称】:Non-destructivetesting-Acousticemissioninspection-Primarycalibrationoftransducers
【原文标准名称】:无损检测声发射检查传感器的初次校正
【标准号】:ISO12713-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-07
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC135
【标准类型】:()
【标准水平】:()
【中文主题词】:试验设备;声传输;声学设备;声学试验;校正;无损检验;声音传播;变压器;试验条件
【英文主题词】:Acousticequipment;Acoustictesting;Calibration;Non-destructivetesting;Soundpropagation;Soundtransmission;Testequipment;Testingconditions;Transformers
【摘要】:ThisInternationalStandardspecifiesamethodfortheabsolutecalibrationofacousticemissiontransducers.TheaimofthisInternationalStandardistoestablishuniformityofacousticemissiontestinginordertoformabasisfordatacorrelationandtoprovidefortheinterpretationofresultsobtainedbydifferentlaboratoriesatdifferenttimes.Anacceptedmethodforthecalibrationofacousticemissiontransducersmustbespecifiedtocharacterizetheirbehaviour.ThisInternationalStandardestablishesamethodfortheprimarycalibrationofacousticemissiontransducersasreceiversofelasticwavesatthesurfaceofasolidmedium.Thecalibrationyieldsthefrequencyresponseofatransducertowavesofthetypenormallyencounteredinacousticemissionwork.Thetransducervoltageresponseisdeterminedatdiscretefrequencyintervalsofapproximately10kHzupto1MHz.Theinputisagivenwell-establisheddynamicdisplacementofthemountingsurface.Theunitsofthecalibrationareoutputvoltageperunitmechanicalinput(displacement,velocityoracceleration).ThisInternationalStandardisapplicabletosecondarystandardtransducersandtoacousticemissionapplicationstransducers.
【中国标准分类号】:H26
【国际标准分类号】:17_140_01
【页数】:29P.;A4
【正文语种】:英语


Product Code:SAE J1383
Title:Performance Requirements for Replaceable Bulb Motor Vehicle Headlamps
Issuing Committee:Road Illumination Devices Standards Committee
Scope:This SAE Recommended practice is intended as a guide toward standard practice and is subject to change to keep pace with experience and technical advances. This document establishes performance requirements, material requirements, design requirements, and design guidelines for headlamps.