地震模型宽带窄脉冲传感器

本文叙述了新型地震模型实验传感器的原理,介绍了两类新型压电材料(PVDF及3—3连结复合压电陶瓷),并由它们制备成两种新颖宽带、窄脉冲、无源及可逆式传感器。这些传感器首次成功地应用于150kHz至1MHz频段的地震模型实验。实验结果表明:它能区分水中6mm厚铝板,还能清晰分辨复杂多层地震模型体。 本文可供研制高分辨率的水声、医学及无损检测等传感器时参考。

The Wide Band, Narrow Impulse Sensors for Seismic Model Experiment

This paper mentions the principle of seismic model experiment sensors. In this paper, two new types of piezoelectricity material ( PVDF and 3-3 connectivity pattern composite piezoelectric ceramic) are presented. By use of them, two new types of wide band,narrow impulse,passive and reversible sensors have been manufactured. These sensors are successfully employed in Seismic model experiments from 150kHz to 1 MHz frequency range. These new type sensors and hardware system can distinguish 6 mm aluminium plank in water, even they can clearly distinguish multilayer model bodies also These sensors described above can be also used for narrow pulse and high resolution underwater detector, medical probe nondestructive testing transducer and so on.