MIL-STD-1757A
时间:2024-05-09 06:40:03 来源: 标准资料网 作者：标准资料网 阅读：8663
MIL-STD-1757A, MILITARY STANDARD: LIGHTNING QUALIFICATION TEST TECHNIQUES FOR AEROSPACE VEHICLES AND HARDWARE (17 JUN 1980) [NO S/S DOCUMENT]., This document presents a set of standard test waveforms and techniques for lighting qualification testing of aerospace vehicles and hardware. The test waveforms presented in this document are intended to reproduce the significant effects of the natural environment and are therefore independent of vehicle type or configuration. The tests include high voltage and high current indirect effects associated with lighting strikes to externally mounted electrical hardware.
【英文标准名称】:StandardTestMethodforRheological(Flow)PropertiesofElastomericSealants
【原文标准名称】:弹性密封料流变(流动)特性的标准试验方法
【标准号】:ASTMC639-2001(2007)
【标准状态】:现行
【国别】:
【发布日期】:2001
【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】:C24.20
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:塑料;试验;流变性能;密封件;密封材料
【英文主题词】:flow;rheology;sag
【摘要】:Theresultsobtainedfromthistestmethodaresimplyameasureofthedegreeofhorizontalorverticalflowofsingle-componentormulti-componentsealantswhenappliedtoasetjointconfigurationattwopre-determinedtemperatures.Onlysamplesconditionedatthesametemperaturemaybedirectlycompared.1.1Thistestmethoddescribesalaboratoryprocedureforthedeterminationofrheological(flow)propertiesofsingle-andmulticomponentchemicallycuringsealantsforuseinbuildingconstruction.1.2Othersuitableflowcharacteristicsmaybeagreeduponbetweenthesellerandpurchaserorspecifier.Specialnonsagpropertiesandlowerflowcharacteristicsmayberequiredforuseinslopingjointswhereabsolutelevelingisnotdesired.Note1-Thesealantsaresuppliedinvariousrheologicalpropertiesrangingfrompourablefluidstostiffnonsaggingpastes.Multicomponentsealantsaresuppliedasabasecomponentwithanactivatororcuringagentseparatelypackaged.Aftermixingthemultipleparts,thesealantisreadyforapplication.Single-componentsealantsaresuppliedreadyforuseuponopeningofthepackageandusuallydependontheexternalenvironmentforcure.1.3Thistestmethoddescribesfourtypesofjointsealants:1.3.1TypeI-Single-componentflowableorself-leveling,1.3.2TypeII-Single-componentnonsag,1.3.3TypeIII-Multicomponentflowableorself-leveling,and1.3.4TypeIV-Multicomponentnonsag.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressthesafetyproblemsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q24
【国际标准分类号】:91_100_50
【页数】:3P.;A4
【正文语种】:
【英文标准名称】:Shuttersandblinds-Measurementofoperatingforce-Testmethods.
【原文标准名称】:百页窗和屏风.操作力测定.试验方法
【标准号】:NFP25-502-1999
【标准状态】:现行
【国别】:法国
【发布日期】:1999-12-01
【实施或试行日期】:1999-12-05
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:P32
【国际标准分类号】:91_060_50
【页数】:17P;A4
【正文语种】:其他