| Summary: | 碩士 === 國立臺灣大學 === 工程科學及海洋工程學研究所 === 102 === Ultrasonic transducers has been used for ocean engineering, noninvasive medical application, and nondestructive testing for years. The selection of modeling method and manufacture of acoustic materials are always the key of design. This thesis presents the theoretical and experimental procedures about designing the transducers. The KLM model, acoustic transmission line, and loss mechanisms were employed to calculate the input impedance and time response of the transducers. Then several home made transducers were conducted. It is demonstrated that the simulation results offers good predictions of performance of transducers. It could be useful in decreasing time of Trial and error on experiments. In the last section, we compared the commercial transducer with home made ones, inclusive of bandwidth, sensitivity, and longitudinal resolution. Besides, the literature survey and induction of backing layer are also important section of the thesis.
Hope to provide some reference for future work.
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