ASTM E1124-1997(2004) 用双面法现场测量声功率级的标准试验方法
时间:2024-05-18 15:28:36 来源: 标准资料网 作者：标准资料网 阅读：8672
【英文标准名称】:StandardTestMethodforFieldMeasurementofSoundPowerLevelbytheTwo-SurfaceMethod
【原文标准名称】:用双面法现场测量声功率级的标准试验方法
【标准号】:ASTME1124-1997(2004)
【标准状态】:现行
【国别】:
【发布日期】:1997
【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】:E33.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:建筑声学;噪声级;现场试验;声强;声学;建筑;试验
【英文主题词】:fieldsoundpower;industrialnoise;machinerynoise;soundpower;two-surfacemethod
【摘要】:1.1Thistestmethodcoversthefield,orinsitumeasurementofsoundpowerlevelbythetwo-surfacemethod.Thetestmethodisdesignedtominimizetheeffectsofreverberantconditions,directivityofthenoisesourceunderconsideration,andtheeffectsofambientnoisefromothernearbyequipmentoperatingatthesametime.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:17_140_01
【页数】:7P.;A4
【正文语种】:
【英文标准名称】:Plastics-Determinationoftheviscosityofpolymersindilutesolutionusingcapillaryviscometers-Part1:generalprinciples.
【原文标准名称】:塑料.使用毛细管粘度计测定稀释溶液中聚合体的粘性.第1部分:一般原则
【标准号】:NFT51-061-1-2009
【标准状态】:现行
【国别】:法国
【发布日期】:2009-04-01
【实施或试行日期】:2009-04-25
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:毛细管粘度计;定义;测定;稀释;解释;粘度限值;极限(数学);测量;测量技术;测量温度;塑料;高聚物;溶液;温度;试验;测试;乌别洛赫特;单位;粘度计;粘度;粘度测量;粘度值
【英文主题词】:Capillarytubeviscometer;Definitions;Determination;Dilute;Interpretations;Limitviscosity;Limits(mathematics);Measurement;Measuringtechniques;Measuringtemperatures;Plastics;Polymers;Solutions;Temperature;Testing;Ubbelohde;Units;Viscometers;Viscosity;Viscositymeasurement;Viscositynumbers
【摘要】:
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:23P;A4
【正文语种】:其他
【英文标准名称】:StandardTestMethodforChipImpactStrengthofPlastics
【原文标准名称】:塑料碎片冲击强度的标准试验方法
【标准号】:ASTMD4508-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D20.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:冲击;冲击强度;冲击试验;塑料;耐力;溶剂;试验;风化
【英文主题词】:breakingenergy;cantileverimpact;chipimpactstrength;impactplastics;impacttesting;microcracks;pendulum;plastics;smallspecimenimpact;weatheredimpactstrength
【摘要】:1.1Thepurposeofthistestmethodistoprovideanimpacttestthatcanbeperformedonsmallspecimensofplasticsofdifferentthicknesses.Thistestmethodisespeciallysuitedforobservingtheeffectsofmicrocrackscausedbyweathering,orbyexposuretosolventsorotherhostileenvironments,onthesurfaceofplasticmaterials.Itisnotmeanttobeusedasareplacementforanyexistingimpacttest,butcanbeusedtomeasureimpactoncouponsmachinedfromfinishedpartsthatcannotbetestedbythedrop-weight,Izod,orCharpymethodbecauseofshapeorthicknesslimitations.1.2Thechip-impacttestisrunonsmall,flat,unnotchedspecimensusingastandardpendulum-impactdevice.Thetestplacestheimpactedsurfaceintensionand,fornotch-sensitivematerials,isextremelysensitivetothepresenceofsurfacemicrocracks.Thus,forplasticsthatdevelopsurfacecrackswhenexposedoutdoors,thechip-impacttestisaseveretestoftheweatheredimpactstrength.1.3Round-robintestinghasindicatedthatmaterialsthatbreakattotalenergyvaluesoflessthan0.17joules[1.5in.-lbf]havewithin-laboratorycoefficientsofvariationofapproximately30%.Therefore,suchvaluesareconsideredoutofthenormaltestingrangeforthistest.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninbracketsareforinformationonly.1.5ThereisnoISOequivalenttothistestmethod.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:6P.;A4
【正文语种】: