{"title":"Nonlinear scatter from Sonazoid","authors":"L. Hoff, T. Johansen","doi":"10.1109/ULTSYM.1999.849320","DOIUrl":null,"url":null,"abstract":"Presents a nonlinear model for the response of shell-encapsulated gas bubbles to an ultrasound pulse. Values for the viscoelastic properties of the shell were estimated from ultrasound measurements at low amplitude. Results from simulations were compared with experiments. Ultrasound pulses were transmitted with a 1 MHz transducer into samples of Sonazoid. Pressure amplitudes were varied between 20 and 500 kPa. In the received echoes, frequency components up to the 9th harmonic of the transmit frequency were detected. Good agreement was found between the experimental results and predictions from the theory. Theories based on gas-bubbles without shell give poor agreement between theoretical and experimental results.","PeriodicalId":339424,"journal":{"name":"1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1999-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ULTSYM.1999.849320","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3

Abstract

Presents a nonlinear model for the response of shell-encapsulated gas bubbles to an ultrasound pulse. Values for the viscoelastic properties of the shell were estimated from ultrasound measurements at low amplitude. Results from simulations were compared with experiments. Ultrasound pulses were transmitted with a 1 MHz transducer into samples of Sonazoid. Pressure amplitudes were varied between 20 and 500 kPa. In the received echoes, frequency components up to the 9th harmonic of the transmit frequency were detected. Good agreement was found between the experimental results and predictions from the theory. Theories based on gas-bubbles without shell give poor agreement between theoretical and experimental results.
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Sonazoid的非线性散射
提出了壳体封装气泡对超声脉冲响应的非线性模型。壳的粘弹性值是通过低振幅的超声测量来估计的。仿真结果与实验结果进行了比较。用1 MHz换能器将超声脉冲传输到Sonazoid样品中。压力幅值在20 ~ 500 kPa之间变化。在接收到的回波中,检测到发射频率的9次谐波频率分量。实验结果与理论预测吻合得很好。基于无壳气泡的理论与实验结果不太一致。
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