發(fā)布時間：2018-06-19 22:47

  本文選題：固-固界面 + 超聲波脈沖�。� 參考：《壓電與聲光》2017年01期

【摘要】：為了直觀地顯示超聲波脈沖在固-固界面的傳播規(guī)律,建立了兩種玻璃組成的固-固界面有限元模型,模擬了超聲波脈沖在固-固界面的傳播情況。通過不同時刻的波場快照圖,清晰地顯示出超聲波脈沖在不同聲學(xué)參數(shù)的兩種固-固界面的傳播情況,模擬得到的結(jié)果與理論和實驗結(jié)果相符。模擬結(jié)果表明,通過有限元模擬方法正確的模擬了超聲波脈沖在固-固界面中的傳播過程,清晰地觀察到了在界面上形成的復(fù)雜聲場情況,模擬結(jié)果可為超聲無損檢測技術(shù)在檢測參數(shù)選擇、缺陷特征提取等方面提供一定的參考。
[Abstract]:In order to visualize the propagation of ultrasonic pulse at the solid-solid interface, a finite element model of the solid-solid interface composed of two kinds of glass was established, and the propagation of the ultrasonic pulse at the solid-solid interface was simulated. The propagation of ultrasonic pulses at two solid-solid interfaces with different acoustic parameters is clearly shown by the snapshots of wave fields at different times. The simulated results are in agreement with the theoretical and experimental results. The simulation results show that the propagation process of ultrasonic pulse in the solid-solid interface is correctly simulated by finite element method, and the complex sound field formed on the interface is clearly observed. The simulation results can provide some reference for ultrasonic nondestructive testing in parameter selection, defect feature extraction and so on.
【作者單位】： 山東省科學(xué)院激光研究所/山東省無損檢測工程技術(shù)研究中心;
【基金】：山東省科學(xué)院杰出青年計劃基金資助項目(201505) 濟(jì)南市高校院所自主創(chuàng)新基金資助項目(201401220,201401209) 山東省科學(xué)院青年基金資助項目(2015QN008)
【分類號】：TN78
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本文編號：2041659