Paper Title:
Intensity Control of Ultrasonic Phased Array Focusing and Steering
  Abstract

When we detect an object by ultrasonic phased array focusing and steering in Non-Destructive Testing (NDT), the ultrasonic attenuation due to material damping will merge noise in the main signal and make data processing difficult. This paper presents an intensity control method developed to ensure that the intensities of eight subwaves are same when they are focusing or steering to the damage location. The mathematics model was established between eight elements and their corresponding magnification factors. We realized the intensity control function by adding an intensity controller model, which is designed on the basis of FPGA technology, into ultrasonic actuator/sensor. Some validation tests were made by using the development platform of Altera CycloneⅡseries. It was shown that both the precision and speed of the model can meet the requirement.

  Info
Periodical
Edited by
Long Chen, Yongkang Zhang, Aixing Feng, Zhenying Xu, Boquan Li and Han Shen
Pages
289-292
DOI
10.4028/www.scientific.net/KEM.464.289
Citation
X. Zhong, B. Q. Li, H. Dai, "Intensity Control of Ultrasonic Phased Array Focusing and Steering", Key Engineering Materials, Vol. 464, pp. 289-292, 2011
Online since
January 2011
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Price
$32.00
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