An ultrasonic array is a single transducer that contains a number of individually connected
elements. Recent years have seen a dramatic increase in the use of ultrasonic arrays for …

In this paper the total focusing method, the so called gold standard in classical beamforming,
is compared with the widely used time-reversal MUSIC super resolution technique in terms …

This paper describes a number of array post-processing methods developed for scanning
applications in non-destructive evaluation. The approach is to capture and process the full …

The elastic-wave scattering at interfaces, such as cracks, is essential for nondestructive
inspections, and hence, understanding the phenomenon is crucial. However, the elastic …

This paper reports the effectiveness of a novel imaging system, piezoelectric and laser
ultrasonic system (PLUS), for the three-dimensional (3D) imaging of fatigue cracks with a …

As a high-resolution 3D phased-array imaging method, a piezoelectric and laser ultrasonic
system (PLUS) was proposed, which is a combination of a piezoelectric transmitter and an …

This work provides a guide to design ultrasonic synthetic aperture systems for non-grid two-
dimensional sparse arrays such as spirals or annular segmented arrays. It presents an …

A considerable number of Post-Tensioned (PT) bridges have been constructed because PT
systems enable them to carry significant traffic loads and have an aesthetical structure …

Row–column addressed arrays for ultrasonic non-destructive testing (NDT) applications are
analyzed and demonstrated in this paper. Simulation and experimental results of a row …

We propose a dark-field evanescent imaging method to visualize surface/subsurface micro
defects with a high signal-to-noise ratio (SNR). This method utilizes the mode-converted …