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时间:2018-09-05
《asnt超声ii级基础理论试卷(答案)》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、上海振华重工(集团)股份有限公司ShanghaiZhenhuaHeavyIndustryCo.,Ltd.超声II级基础理论试卷UTLevelIIGeneralExamination 姓名: 答卷时间: 地点: NameTimeLocation 得分: 评卷人: 时间: MarksExaminerDate1.超声波探伤中,最常用的换能器应用的原理是:(B)A)磁致伸缩原理B)压电原理C)波型转换原理D)以上都不是Thetransducersmostcommonlyfound
2、inultrasonicsearchunits(probes)usedfordiscontinuitytestingutilize:A)magnetostrictionprinciplesB)piezoelectricprinciplesC)modeconversionprinciplesD)noneoftheabove2.下列哪种声波具有多种不同的波速?(D)A)纵波B)切变波C)横波D)兰姆波Ofthefollowingsoundwavemodes,whichonehasmultipleorvaryingwavevelocit
3、ies?A)longitudinalwavesB)shearwavesC)transversewavesD)lambwaves3.下列哪种情况可应用超声技术进行检测?(D)A)确定材料弹性模量B)研究材料冶金组织C)测量材料厚度D)以上都可以Whichofthefollowingwouldbeconsideredapplication(s)ofultrasonictechniques?A)determinationofamaterial'selasticmodulusB)studyofamaterial'smeallurgical
4、structureC)measurementofamaterial'sthicknessD)alloftheabove4.可在液体中传播的唯一声波是:(B)A)切变波B)纵波C)表面波D)瑞利波Theonlysignificantsoundwavemodethatwilltravelthroughaliquidis:A)shearB)longitudinalC)surfaceD)rayleigh5.材料的声阻抗用来:(C)A)确定界面上的折射角B)确定材料的声衰减C)确定界面上透过和反射声能的相对数量D)确定材料中声束扩散角The
5、acousticimpedanceofamaterialisusedto:A)determinetheangleofrefractionataninterfaceB)determinetheattenuationwithinthematerialC)determinetherelativeamountsofsoundenergycoupledthroughandreflectedataninterfaceD)determinethebeamspreadwithinthematerial6.对试样进行接触法斜角探伤时,如果入射角达到
6、第二临界角,会发生:(C)A)表面波全反射B)切变波45°折射C)表面波D)以上都不对Whenanglebeamcontacttestingatestpiece,increasingtheincidentangleuntilthesecondcriticalangleisreachedresultsin:A)totalreflectionofasurfacewaveB)45°refractionoftheshearwaveC)productionofasurfacewaveD)noneoftheabove7.接触法探伤中,靠近入射
7、表面的缺陷并不是总能探测出来的,其原因是:(C)A)远场效应B)衰减C)盲区D)折射Incontacttesting,defectsneartheentrysurfacecannotalwaysbedetectedbecauseof:A)thefar-fieldeffectB)attenuationC)thedeadzoneD)refraction8.换能器频率与晶片厚度有关,晶片愈薄:(B)A)频率愈低B)频率愈高C)频率无显著差别D)以上都不对Thecrystalthicknessandtransducerfrequencya
8、rerelated,thethinnerthecrystal:A)thelowerthefrequencyB)thehigherthefrequencyC)thereisnoappreciableaffectD)noneoftheabove9.靠近
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