空气耦合通过传输铝和其他最近的结果使用mut

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118) Pub Date : 1997-10-05 DOI:10.1109/ULTSYM.1997.661745

I. Ladabaum, X. Jin, B. Khuri-Yakub

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引用次数: 14

摘要

报道了2.3 MHz纵向超声波通过铝的空气耦合传输。采用微结构超声换能器发射和接收超声脉冲。接收器处的信号在噪声底之上30 dB，这意味着动态范围约为110 dB。独立验证了动态范围，并演示了通过钢的传输。介绍了光石板的空气耦合无损检测扫描。基于对换能器的理论理解，优化了制造工艺，使实验成为可能。浸入式mut的制造也取得了重大进展。该系统的插入损耗为4db，传输实验表明，在100%带宽下，动态范围为100db。

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Air coupled through transmission of aluminum and other recent results using MUTs

The air-coupled transmission of 2.3 MHz longitudinal ultrasonic waves through aluminum is reported. Microfabricated ultrasonic transducers are used to emit and receive the ultrasonic tone burst. The signal at the receiver is 30 dB above the noise floor, which implies a dynamic range of approximately 110 dB. The dynamic range is independently verified, and transmission through steel is also demonstrated. Air-coupled NDE scans of lucite plates are presented. An optimized fabrication process, based on theoretical understanding of the transducers, enables the experiments. Significant progress in the fabrication of immersion MUTs is also in evidence. An insertion loss of 4 dB is reported and transmission experiments show 100 dB of dynamic range with 100% bandwidth.

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来源期刊

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118)

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