Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5485286 | Ultrasonics | 2018 | 5 Pages |
Abstract
An ultrasonic phased array transmitter (PAT) consisting of 12Â ÃÂ 12 elements was designed and fabricated to evaluate its experimental characteristic performance in the medium range of 2Â m-10Â m for its directivity, pulse width affect and sound pressure level (SPL) measurements as a function of distance from its center in the open air. The SPL was measured at 2 m, 5Â m, and 10Â m distances as 135Â dB, 126Â dB and 68Â dB, respectively. The experimentally measured directivity patterns were found in good agreement with the theoretical results obtained by using MATLAB simulations. The SPL showed negligible change as a function of the ultrasonic pulse widths such as 0.5Â ms, 1Â ms and 2Â ms. The SPL and directivity of the PAT at 2Â m distance were measured for ultrasonic pulse width of 0.1Â ms only while as at 10Â m distance these were measured for the ultrasonic pulse widths of 0.5Â ms, 1Â ms and 2Â ms. The present investigations on the PAT characteristics are expected to be useful for its industrial, scientific and biomedical applications, e.g., robotics for 3D range imaging with improved and efficient object presence sensing as well as nondestructive health monitoring.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Acoustics and Ultrasonics
Authors
Sahdev Kumar, Hideo Furuhashi,