【英文标准名称】:Paintsandvarnishes-Evaluationofdefectsoncoatedsurfacesusingopticalimaging-Part2:Evaluationprocedureformulti-impactstone-chippingtest
【原文标准名称】:涂料和清漆.光学成像法评价涂覆表面的缺陷.第2部分:多冲击碎石试验的评价程序
【标准号】:ISO21227-2-2006
【标准状态】:现行
【国别】:国际
【发布日期】:2006-09
【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/TC35
【标准类型】:()
【标准水平】:()
【中文主题词】:分析;涂层材料;颜色;彩色图像;损害;缺陷;数字数据;失效分析;数字;灰度;图像档案;图像处理;解释;涂料;图像描述信息;岩石冒落;规范(验收);表面缺陷;表面检验;表面
【英文主题词】:Analysis;Coatingmaterials;Colour;Colourpicture;Damage;Defects;Digitaldata;Failureanalysis;Figures;Grey-scales;Imagefiles;Imageprocessing;Interpretations;Paints;Picturedescriptioninformation;Rockfall;Specification(approval);Surfacedefects;Surfaceinspections;Surfaces
【摘要】:ThispartofISO21227describesaprocedureforevaluatingmulti-stoneimpactdamagebymeansofopticalimaging.AsuitablemethodforsimulatingthedamagingprocessisspecifiedinISO20567-1.
【中国标准分类号】:G51
【国际标准分类号】:87_040
【页数】:8P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforAmbientTemperatureFatigueLifeofMetallicBondedResistanceStrainGages
【原文标准名称】:金属粘合抗应变仪的环境温度疲劳寿命的标准试验方法
【标准号】:ASTME1949-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:E28.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:疲劳;机械试验;应变仪;应变;试验方法
【英文主题词】:ambient;fatiguelife;straingage
【摘要】:Straingagesarethemostwidelyuseddevicesformeasuringstrainsandforevaluatingstressesinstructures.Inmanyapplicationsthereareoftencyclicloadswhichcancausestraingagefailure.Performanceparametersofstraingagesareaffectedbyboththematerialsfromwhichtheyaremadeandtheirgeometricdesign.Thedeterminationofmoststraingageparametersrequiresmechanicaltestingthatisdestructive.Sincegagestestedforfatiguelifecannotbeusedagain,itisnecessarytotreatdatastatistically.Ingeneral,longerandwidergageswithlowerresistanceswillhavegreaterfatiguelife.Optionaladditionstogages(integralleadsareanexample)willoftenreducefatiguelife.Tobeused,straingagesmustbebondedtoastructure.Goodresults,particularlyinafatigueenvironment,dependheavilyonthematerialsusedtocleanthebondingsurface,tobondthegage,andtoprovideaprotectivecoating.Skilloftheinstallerisanothermajorfactorinsuccess.Finally,instrumentationsystemsmustbecarefullyselectedandcalibratedtoensurethattheydonotundulydegradetheperformanceofthegages.Thistestmethodencompassesonlyfullyreversedstraincycles.Fatiguefailureofastraingagemaynotinvolvevisiblecrackingorfractureofthegage,butmerelysufficientzeroshifttocompromisetheaccuracyofthegageoutputforstaticstraincomponents.1.1Thistestmethodcoversauniformprocedureforthedeterminationofstraingagefatiguelifeatambienttemperature.Asuggestedtestingequipmentdesignisincluded.1.2Thistestmethoddoesnotapplytoforcetransducersorextensometersthatusebondedresistancestraingagesassensingelements.1.3Straingagesarepartofacomplexsystemthatincludesstructure,adhesive,gage,leadwires,instrumentation,and(often)environmentalprotection.Asaresult,manythingsaffecttheperformanceofstraingages,includingusertechnique.Afurthercomplicationisthatstraingages,onceinstalled,normallycannotbereinstalledinanotherlocation.Therefore,itisnotpossibletocalibrateindividualstraingages;performancecharacteristicsarenormallypresentedonastatisticalbasis.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortoitsuse.
【中国标准分类号】:N51
【国际标准分类号】:19_060
【页数】:5P.;A4
【正文语种】: