MIL-C-81814B
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来源:标准资料网
MIL-C-81814B, MILITARY SPECIFICATION, CLOTH, TWILL, ARAMID, HIGH TEMPERATURE RESISTANT (10 APR 1978)., This specification covers high temperature resistant aramid twill cloth used in the manufacture of aeronautical clothing.
【英文标准名称】:TestMethodsforZero-SpanBreakingStrength("DryZero-SpanTensile")
【原文标准名称】:零档制动强度试验方法("干零档张力")
【标准号】:ANSI/ASTMD5804-1997
【标准状态】:作废
【国别】:美国
【发布日期】:1997
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:扁平轧材;抗拉强度;材料试验;试验
【英文主题词】:Breakingstrength;Flatrolledproducts;Materialstesting;Paper;Paperproducts;Tensilestrength;Testing;Tests
【摘要】:Thistestmethodprovidesaquickreliablemeanstomeasurethezero-spantensilestrengthofarandomlyorientedspecimenoffiberswhendry.Similarproceduresfordeterminingthezero-spantensilestrengthofarandomlyorientedspecimenoffiberswhenwetarefoundinTestMethodD5803.Inthistestmethod,thefibersaretestedasahandsheetproducedusingastandardizedproceduresuchasTAPPIT205.Whiletestingispossibleonfinishedpapermaterials,informationonfiberqualityfromintermediatestepsinthepulpingorpapermakingprocess,orboth,isfrequentlymoreusefulforimprovingfinishedpaperqualityorimprovingfiberutilizationof,forexample,recycledfibers,orfiberssubjectedtonewpulping,bleaching,orfinishingprocesses.Themodificationsoftheproceduredescribedinthistestmethodrequiredfortestingfinishedpaperisstraightforward;however,testingmustbedoneinthetwoprincipledirectionsofthesheet,asrequiredinTestMethodD828,sincethefinishedpaperorpaperboardwillgenerallyhavenon-randomfiberorientation,resultingindifferentstrengthpropertiesinthetwoprincipledirectionsofthefinishedsheet.Testingofsheetshavingagrammagegreaterthan100g/m,whichincludessomepapermaterialsdescribedaspaperandmanypaperboards,isdifficultbecauseofproblemsassociatedwithclampingofindividualfibersasthenumberoffibersperunitareaincreases.Suchmodificationsarenotdescribedinthistestmethod,andiftheyaremade,theyshallbeacknowledgedandclearlydescribedinthereportasdeviationsfromthestandardprocedure.Inadditiontoameasureofthedryzero-spantensilestrengthofthespecimenoffibers,anindexofthecohesivenessoffibersinthesheetisalsoprovidedbytheratioofthetensilestrengthdeterminedusingTestMethodD828andthetensilestrengthdeterminedusingthistestmethodwhenalltestingisdoneonhandsheetshavingrandomfiberorientation(1).Twoinstrumentalapproachesforaccomplishingthemeasurementofdrytensilestrengthatzero-spanaredescribed.Oneapproachistheuseofspeciallyconstructedpairof"zero-span"jawswhichareusedinconjunctionwithaconventionaltensiletestingmachine.Onesuchdesignfor"zero-span"jawswasproposedbyClark(1).AseconddesignwasproposedbyWinkandVanEperen(2).Asecondapproachistheuseofaspecialinstrumentincorporatingboth"zero-span"jawsandmeasurementandreadoutdevicesinasingleinstrument.Whenproperlyadjustedandcalibrated,eitheroftheinstrumentalapproachesmaybeusedtoperformthistestmethod.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Y30
【国际标准分类号】:19_060
【页数】:
【正文语种】:英语
Product Code:SAE AMS4778
Title:Nickel Alloy, Brazing Filler Metal, 92Ni - 4.5Si - 3.1B, 1800 to 1900 掳F Solidus-Liquidus Range
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification covers a nickel alloy in the form of wire, rod, strip, foil, and powder and a viscous mixture (paste) of the powder in a suitable binder and procured in inch/pound units.
