基于COMSOL仿真的电磁超声压电接收技术在铝板裂纹检测中的应用研究,COMSOL模拟：电磁超声压电接收技术在铝板裂纹检测中的应用,comsol电磁超声压电接收EMAT在1mm厚铝板中激励250kH

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ZIP 电磁超声压电接收在厚铝板 大约有13个文件
  1. 1.jpg 55.24KB
  2. 2.jpg 52.16KB
  3. 3.jpg 103.23KB
  4. 基于人工神经网络的无刷直流电机转速.txt 2.44KB
  5. 探讨软件在技术中的应用研究本文通过使用软件模拟分析.txt 1.92KB
  6. 标题基于的电磁超声压电接收技术在铝板缺陷检测中的.doc 1.31KB
  7. 深度电磁超声与仿真分析一背景与.html 310.05KB
  8. 电磁超声与压电技术在工程中的应用分析一背景介绍.txt 2.54KB
  9. 电磁超声与压电技术在工程师眼中的.html 311.28KB
  10. 电磁超声压电接收在.html 309.05KB
  11. 电磁超声压电接收技术在仿真中的应用分析在快.html 310.85KB
  12. 电磁超声压电接收技术在铝板裂纹检测中的应用在非破坏.html 309.54KB
  13. 电磁超声技术在铝板中捕捉裂纹的回声在非破坏性检测.txt 1.85KB

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基于COMSOL仿真的电磁超声压电接收技术在铝板裂纹检测中的应用研究,COMSOL模拟：电磁超声压电接收技术在铝板裂纹检测中的应用,comsol电磁超声压电接收EMAT 在1mm厚铝板中激励250kHz的电磁超声在200mm位置处设置一个深0.8mm的裂纹缺陷，左端面设为低反射边界。 在85mm位置处放置一个压电片接收信号，信号如图3所示，三个波分别为始波，裂纹反射波(S0模态)和右端面回波(S0）。 ,comsol;电磁超声;压电接收;EMAT;裂纹缺陷;信号接收;波;始波;S0模态;右端面回波,电磁超声检测技术：裂纹缺陷定位与信号分析
<link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/base.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/fancy.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/90405419/2/raw.css" rel="stylesheet"/><div id="sidebar" style="display: none"><div id="outline"></div></div><div class="pf w0 h0" data-page-no="1" id="pf1"><div class="pc pc1 w0 h0"><img alt="" class="bi x0 y0 w1 h1" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/90405419/bg1.jpg"/><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">标题<span class="ff2">：</span>基于<span class="_ _0"> </span><span class="ff3">COMSOL<span class="_ _1"> </span></span>的电磁超声压电接收<span class="ff2">（<span class="ff3">EMAT</span>）</span>技术在铝板缺陷检测中的应用研究</div><div class="t m0 x1 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0">摘要<span class="ff2">：</span>本文以<span class="_ _0"> </span><span class="ff3">COMSOL<span class="_ _1"> </span></span>为工具<span class="ff2">，</span>研究了电磁超声压电接收<span class="ff2">（<span class="ff3">EMAT</span>）</span>技术在<span class="_ _0"> </span><span class="ff3">1mm<span class="_ _1"> </span></span>厚铝板中的应用<span class="ff4">。</span>通</div><div class="t m0 x1 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">过在<span class="_ _0"> </span><span class="ff3">200mm<span class="_ _1"> </span></span>位置设置一个深<span class="_ _0"> </span><span class="ff3">0.8mm<span class="_ _1"> </span></span>的裂纹缺陷<span class="ff2">，</span>左端面设为低反射边界<span class="ff2">，</span>并在<span class="_ _0"> </span><span class="ff3">85mm<span class="_ _1"> </span></span>位置放置压电</div><div class="t m0 x1 h2 y4 ff1 fs0 fc0 sc0 ls0 ws0">片接收信号<span class="ff4">。</span>通过分析始波<span class="ff4">、</span>裂纹反射波<span class="ff2">（<span class="ff3">S0<span class="_ _1"> </span></span></span>模态<span class="ff2">）</span>和右端面回波<span class="ff2">（<span class="ff3">S0</span>）</span>的波形<span class="ff2">，</span>对铝板缺陷进行</div><div class="t m0 x1 h2 y5 ff1 fs0 fc0 sc0 ls0 ws0">检测和分析<span class="ff4">。</span></div><div class="t m0 x1 h2 y6 ff3 fs0 fc0 sc0 ls0 ws0">1.<span class="_ _2"> </span><span class="ff1">引言</span></div><div class="t m0 x1 h2 y7 ff1 fs0 fc0 sc0 ls0 ws0">电磁超声技术是一种非接触<span class="ff4">、</span>非破坏性的测试方法<span class="ff2">，</span>广泛应用于金属材料的缺陷检测和评估<span class="ff4">。</span>其中<span class="ff2">，</span></div><div class="t m0 x1 h2 y8 ff1 fs0 fc0 sc0 ls0 ws0">电磁超声压电接收<span class="ff2">（<span class="ff3">EMAT</span>）</span>技术具有操作简便<span class="ff4">、</span>信号清晰等优点<span class="ff2">，</span>逐渐成为研究热点<span class="ff4">。</span>本文以</div><div class="t m0 x1 h2 y9 ff3 fs0 fc0 sc0 ls0 ws0">COMSOL<span class="_ _1"> </span><span class="ff1">为工具<span class="ff2">，</span>通过激励<span class="_ _0"> </span></span>250kHz<span class="_ _1"> </span><span class="ff1">的电磁超声<span class="ff2">，</span>在<span class="_ _0"> </span></span>1mm<span class="_ _1"> </span><span class="ff1">厚铝板中设置裂纹缺陷<span class="ff2">，</span>探讨了<span class="_ _0"> </span></span>EMAT<span class="_ _1"> </span><span class="ff1">技术</span></div><div class="t m0 x1 h2 ya ff1 fs0 fc0 sc0 ls0 ws0">在铝板缺陷检测中的应用<span class="ff4">。</span></div><div class="t m0 x1 h2 yb ff3 fs0 fc0 sc0 ls0 ws0">2.<span class="_ _2"> </span><span class="ff1">研究方法</span></div><div class="t m0 x1 h2 yc ff3 fs0 fc0 sc0 ls0 ws0">2.1.<span class="_"> </span><span class="ff1">建立模型</span></div><div class="t m0 x1 h2 yd ff1 fs0 fc0 sc0 ls0 ws0">基于<span class="_ _0"> </span><span class="ff3">COMSOL<span class="ff2">，</span></span>建立了一个<span class="_ _0"> </span><span class="ff3">1mm<span class="_ _1"> </span></span>厚铝板模型<span class="ff4">。</span>在模型中<span class="ff2">，</span>设置<span class="_ _0"> </span><span class="ff3">200mm<span class="_ _1"> </span></span>位置处的裂纹缺陷<span class="ff2">，</span>深度为</div><div class="t m0 x1 h2 ye ff3 fs0 fc0 sc0 ls0 ws0">0.8mm<span class="ff2">，<span class="ff1">并将左端面设为低反射边界<span class="ff4">。</span>在<span class="_ _0"> </span></span></span>85mm<span class="_ _1"> </span><span class="ff1">位置放置一个压电片<span class="ff2">，</span>用于接收信号<span class="ff4">。</span></span></div><div class="t m0 x1 h2 yf ff3 fs0 fc0 sc0 ls0 ws0">2.2.<span class="_"> </span><span class="ff1">激励信号</span></div><div class="t m0 x1 h2 y10 ff1 fs0 fc0 sc0 ls0 ws0">激励信号采用<span class="_ _0"> </span><span class="ff3">250kHz<span class="_ _1"> </span></span>的电磁超声波<span class="ff2">，</span>通过模型中的电磁超声源激发<span class="ff4">。</span></div><div class="t m0 x1 h2 y11 ff3 fs0 fc0 sc0 ls0 ws0">3.<span class="_ _2"> </span><span class="ff1">结果分析</span></div><div class="t m0 x1 h2 y12 ff1 fs0 fc0 sc0 ls0 ws0">通过<span class="_ _0"> </span><span class="ff3">COMSOL<span class="_ _1"> </span></span>仿真<span class="ff2">，</span>得到了始波<span class="ff4">、</span>裂纹反射波<span class="ff2">（<span class="ff3">S0<span class="_ _1"> </span></span></span>模态<span class="ff2">）</span>和右端面回波<span class="ff2">（<span class="ff3">S0</span>）</span>的波形<span class="ff4">。</span>根据波形特</div><div class="t m0 x1 h2 y13 ff1 fs0 fc0 sc0 ls0 ws0">征可以对铝板的缺陷进行检测和分析<span class="ff4">。</span></div><div class="t m0 x1 h2 y14 ff3 fs0 fc0 sc0 ls0 ws0">3.1.<span class="_"> </span><span class="ff1">始波</span></div><div class="t m0 x1 h2 y15 ff1 fs0 fc0 sc0 ls0 ws0">始波是指电磁超声波从激发源发射至铝板表面时的波形<span class="ff4">。</span>始波的特征对应着激发源的信号特性<span class="ff2">，</span>我们</div><div class="t m0 x1 h2 y16 ff1 fs0 fc0 sc0 ls0 ws0">可以通过分析始波的振幅和频谱信息<span class="ff2">，</span>了解激发源的性能以及能量传输情况<span class="ff4">。</span></div><div class="t m0 x1 h2 y17 ff3 fs0 fc0 sc0 ls0 ws0">3.2.<span class="_"> </span><span class="ff1">裂纹反射波<span class="ff2">（</span></span>S0<span class="_ _1"> </span><span class="ff1">模态<span class="ff2">）</span></span></div><div class="t m0 x1 h2 y18 ff1 fs0 fc0 sc0 ls0 ws0">裂纹反射波是指电磁超声波在裂纹处反射产生的波形<span class="ff4">。</span>裂纹反射波的特征对应着缺陷的位置和形态<span class="ff2">，</span></div><div class="t m0 x1 h2 y19 ff1 fs0 fc0 sc0 ls0 ws0">通过分析裂纹反射波的振幅和时间</div></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div>
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