Abstract The Synthetic Aperture Focusing Technique (SAFT) is an imaging algorithm used in
laser ultrasonics (LU) to visualise the appearance of defects. However, ultrasound excited …

A new implementation of a synthetic aperture focusing technique (SAFT) based on concepts
used in synthetic aperture radar and sonar is presented in the paper. The algorithm, based …

Three-dimensional image formation in microscopy is greatly enhanced by the use of
computed imaging techniques. In particular, Interferometric Synthetic Aperture Microscopy …

This paper proposes the use of phase shift migration for ultrasonic imaging of layered
objects and objects immersed in water. The method, which was developed in reflection …

The effect of 0–600 A direct current on mechanical properties of electrically assisted friction
stir welded (EFSWed) joints of 6mm thick 2219 aluminum alloy were investigated. The …

This investigation aimed to adapt the total focusing method (TFM) algorithm (originated from
the synthetic aperture focusing technique in digital signal processing) to accommodate a …

The possibility of reconstructing the velocity structure of inspected objects with a high spatial
resolution and high sensitivity in ultrasonic tomographic nondestructive testing within the …

Ultrasound imaging systems (UIS) are essential tools in nondestructive testing (NDT). In
general, the quality of images depends on two factors: system hardware features and image …

In this paper, a damage imaging method for 2-D concrete structures is proposed by
employing embedded tubular piezoceramic transducers. The proposed method can image …

A signal processing technique is presented for significantly sharpening the resolution of
ultrasonic images, similar to those acquired in the nondestructive evaluation of girth welds in …