Real Implementation of Ultrasonic Phased Array Technology Using Advanced Signal Processing Algorithms

Abstract

Over the past few years, all improvements in the field of ultrasonic non-destructive testing have led to signi-ficant advances in ultrasonic signal processing and image conctruction techniques. The main focus in non-destructive testing area is to improve the resolution of defect dete-ction and make the detection process as fast and accurate as possible. Many techniques have been proposed and imple-mented to improve the flaw and crack detection processes. In general, these techniques can be divided into the two main parts. As first, many proposals consider the const-ruction of ultrasonic transducers and systems. The second part is mainly focused on proposal of efficient signal processing algorithms that improve sensitivity (noise reduction) during ultrasonic signal acquisition. This paper presents our fully developed ultrasonic portable system with implemented phased array technology. All acquired ultrasonic signals are consequently processed using our proposed filtering algorithms.