Application of Cylindrical Linear Phased Array in Casing Borehole
A new Ultrasonic Phased Array (UPA) transducer is presented for borehole imaging and casing inspection in acoustical logging. Firstly, a Cylindrical Linear Phased Array (CLPA), which is made up of numbers of piezoelectric elements distributed on the surface of a cylinder uniformly, is designed and fabricated. By transmitting and receiving acoustic waves using different groups of the elements under the control of the electric system, CLPA can scan all area of the borehole wall dynamically and rapidly. The radiation and reflection acoustic fields of the CLPA are investigated theoretically in the casing borehole with defects. Finally, the experimental researches about ultrasonic scanning and imaging for the casing boreholes with defects have been conducted by CLPA transducer. The experimental results consist well with the theoretical ones.
Fang-Fang Shi Xian-Mei Wu Yi-Jing Ke Bi-Xing Zhang
State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, P.R. China
国际会议
2nd China-Korea Ioint Workshop on Ultrasonic Nondestructive Evaluation(第二届中韩双边超声无损评估学术会议)
上海
英文
49-56
2009-10-20（万方平台首次上网日期，不代表论文的发表时间）