The application of laser reflective tomography in near-field measurements of ultrasonic transducers  

作　　者：WANG Yuebing WANG Shiquan 

机构地区：[1]China Jiliang University [2]Hangzhou Applied Acoustic Research Institute

出　　处：《Chinese Journal of Acoustics》2014年第3期257-266,共10页声学学报（英文版）

摘　　要：With Laser Reflective Tomography（LRT）,the near fields of ultrasonic transducers were measured and analyzed.The principle of LRT measurement of ultrasonic field distribution was introduced and an experimental system was set up.Acoustic pressure of a multiple element piston transducer was measured by using of a laser vibrometer.Its distribution in amplitude and phase was obtained.The acoustic pressure in the same region was measured with a needle hydrophone to validate the LRT method.Furthermore,through reconstruction of acoustic fields,it indicated that LRT method is suitable for predicting the distribution on transducers＇surface and conditions of active elements.With Laser Reflective Tomography（LRT）,the near fields of ultrasonic transducers were measured and analyzed.The principle of LRT measurement of ultrasonic field distribution was introduced and an experimental system was set up.Acoustic pressure of a multiple element piston transducer was measured by using of a laser vibrometer.Its distribution in amplitude and phase was obtained.The acoustic pressure in the same region was measured with a needle hydrophone to validate the LRT method.Furthermore,through reconstruction of acoustic fields,it indicated that LRT method is suitable for predicting the distribution on transducers＇surface and conditions of active elements.

关 键 词：The application of laser reflective tomography in near-field measurements of ultrasonic transducers LRT 

分 类 号：TB552[理学—物理]