CAJ | 학술논문

采用有限元法与实验测量相结合对可应用于声波测井的高灵敏度宽带接收器进行研究。通过 ANSYS 对接收器的优化分析表明,接收器的性能主要受陶瓷片长度和厚度的影响,减少陶瓷片长度有利于拓宽工作频带,增加陶瓷片厚度有利于提高接收灵敏度。优化后接收器的性能指标如下：接收器的工作频率为1~30 kHz,频带内接收灵敏度平均值为-204.85 dB,灵敏度起伏量小于2.3 dB。在此基础上,加工制作接收器并进行实验测试,测试结果与计算结果基本吻合,证实了接收器具有高灵敏度、宽频带的特点。
채용유한원법여실험측량상결합대가응용우성파측정적고령민도관대접수기진행연구。통과 ANSYS 대접수기적우화분석표명,접수기적성능주요수도자편장도화후도적영향,감소도자편장도유리우탁관공작빈대,증가도자편후도유리우제고접수령민도。우화후접수기적성능지표여하：접수기적공작빈솔위1~30 kHz,빈대내접수령민도평균치위-204.85 dB,령민도기복량소우2.3 dB。재차기출상,가공제작접수기병진행실험측시,측시결과여계산결과기본문합,증실료접수기구유고령민도、관빈대적특점。
Investigations on a high-sensitivity and wide-band receiver used in acoustic well logging are conducted combining finite element methods and experimental measurements. The optimization analysis on the receiver by ANSYS shows that the length and thickness of ceramic plates have major effects on the receiver performance characteristics. The operating frequency bandwidth broadens as the length of ceramic plates decreases, and the receiving sensitivity improves as the thickness of ce-ramic plates increases. Furthermore, the receiving performance of the optimized receiver is simulated by ANSYS, and its performance indices are obtained. In the operating frequency bandwidth from 1 kHz to 30 kHz, the average of receiving sen-sitivity is -204. 85 dB and the sensitivity fluctuation is less than 2. 3 dB. According to the optimized structural parameters of the receiver, a prototype is fabricated and measured in a water tank. The experimentally measurements are in good agreement with the calculated results, supporting the high sensitivity and wide bandwidth of the receiver.