天津科技大学化工与材料学院
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雷晨阳, 薛凯茹, 王丹彤, 等. 琼脂凝胶中气泡含量及间距对超声波衰减特性的影响[J]. 传感器与微系统, 2024,(2):57-60.
雷晨阳, 薛凯茹, 王丹彤, 等. 琼脂凝胶中气泡含量及间距对超声波衰减特性的影响[J]. 传感器与微系统, 2024,(2):57-60. DOI: 10.13873/J.1000-9787(2024)02-0057-04.
首先,基于声学探伤技术,采用透射法就琼脂凝胶中气泡对超声波传播的影响进行了试验研究;其次,用有限元分析软件对含气泡琼脂凝胶中的超声波传播进行了声学仿真。将试验结果和仿真结果进行对比,趋势一致结果符合良好,对琼脂凝胶中气泡尺寸、数量及间距对超声波衰减的影响分别进行了分析。结果表明:当气泡含量发生变化时,对超声波衰减起主要作用的是吸收衰减;当气泡含量一定时,气泡间距的改变对超声波的传播有着显著影响,随着间距的增加,声衰减逐渐增大,且随着频率增加声衰减逐渐减小。
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