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首页> 外文期刊>Journal of Zhejiang University. Science, A >Excitation of axisymmetric and non-axisymmetric guided waves in elastic hollow cylinders by magnetostrictive transducers
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Excitation of axisymmetric and non-axisymmetric guided waves in elastic hollow cylinders by magnetostrictive transducers

机译：磁致伸缩换能器弹性空心圆柱体轴对称和非轴对称引导波的激发

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摘要

Ultrasonic guided waves have been successfully applied in nondestructive evaluation (NDE) and structural health monitoring (SHM) of pressure vessels and pipelines due to their advantages, such as long detection range and high inspection efficiency. Compared with other ultrasonic guided wave actuators, magnetostrictive transducers are more cost-effective, involve simpler fabrication process, and have higher possible transduction efficiency. The normal mode expansion (NME) method is adopted to analyze the forced response and perturbation analysis of elastic hollow cylinders with respect to magnetostrictive loadings, including partial loading, axial array loading, and circular array loading. The phase velocity and frequency spectra of axisymmetric/non-axisymmetric guided waves excited by magnetostrictive transducers are analyzed. The theoretically predicted trends are verified by finite element numerical simulations and experiments.
机译：由于其优点，超声波引导波已经成功地应用于非破坏性评估（NDE）和结构健康监测（SHM），例如长检测范围和高检查效率。与其他超声波引导波致动器相比，磁致伸缩传感器更具成本效益，涉及更简单的制造过程，并且具有更高可能的转换效率。采用正常模式扩展（NME）方法来分析弹性空心圆柱相对于磁致伸缩载荷的强制响应和扰动分析，包括部分负载，轴向阵列负载和圆形阵列负载。分析了磁致伸缩换能器激发的轴对称/非轴对称引导波的相位速度和频谱。通过有限元数值模拟和实验验证理论上预测的趋势。

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