资料简介: | |
1.超声波探伤中,Z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Thetransducersmostcommonlyfoundinultrasonicsearchunits(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,whichonehasmultipleorvaryingwavevelocities?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'smeallurgicalstructureC)measurementofamaterial'sthicknessD)alloftheabove |
上海易启检测技术有限公司
仪器网(yiqi.com)--仪器行业网络宣传传媒