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首页> 外文期刊>International Journal of Innovative Computing Information and Control >PARAMETER OPTIMIZATION AND NUMERICAL CALCULATION FOR GIANT MAGNETOSTRICTIVE TRANSDUCER
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PARAMETER OPTIMIZATION AND NUMERICAL CALCULATION FOR GIANT MAGNETOSTRICTIVE TRANSDUCER

机译：巨磁致伸缩传感器的参数优化和数值计算

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摘要

In the study of piezoelectric ceramic transducers, a lot of high quality papers are published in journal NATUR. In this paper, a new type of transducers is developed with rare earth giant magnetostrictive materials (GMM). The transducers are good at solving the ultrasonic nondestructive testing of the large components in concrete. For the transducers, the impedance characteristics, the vibration velocity and the stress of the rare earth GMM transducers are calculated by a new method of Four-Terminal Network Method (FTNM) combined with the Fourier Transform (FT). Experimental results prove that the results numerically calculated by the new method are correct. In addition, the pre-stress, the electrical parameters and the geometric dimensions are optimized, and thereafter, the rare earth Giant Magnetostrictive Transducer (GMT) with longitudinal vibration is developed based on the optimal parameters. The studied transducer has the advantages of the larger power, higher frequency and minimum residual vibration in nondestructive testing. The testing results show that the ultrasonic nondestructive detection of bridge and the massive concrete (length: 6m~10m) with internal quality can be carried out.
机译：在压电陶瓷换能器的研究中，NATUR杂志上发表了许多高质量的论文。在本文中，开发了一种新型的稀土超磁致伸缩材料（GMM）换能器。换能器擅长解决混凝土中大型部件的超声波无损检测。对于换能器，采用四端网络法（FTNM）结合傅里叶变换（FT）的新方法，计算了稀土GMM换能器的阻抗特性，振动速度和应力。实验结果证明，新方法数值计算的结果是正确的。此外，优化了预应力，电参数和几何尺寸，然后，根据最佳参数开发了具有纵向振动的稀土超磁致伸缩换能器（GMT）。在无损检测中，所研究的换能器具有功率更大，频率更高和残留振动最小的优点。测试结果表明，可以对桥梁和内部质量大的混凝土（长度：6m〜10m）进行超声无损检测。

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