Carbon fiber reinforced polymers (CFRPs) with large thickness (≥ 20 mm) are being
extensively used for aerospace structures, and are prone to the manufacturing and in …

In conventional laser ultrasonic (LU) single-mode frequency domain synthetic aperture
focusing technique (F-SAFT) imaging, the precision of the imaged defect profile is limited …

This article discusses the application of sparse synthetic aperture focusing techniques
(SAFTs) for fast and accurate ultrasonic nondestructive testing (NDT) imaging of solids in …

Ultrasound imaging using an active sensing array has been extensively studied in both time
domain and frequency domain. Subspace decomposition methods in match field …

This paper investigates the interaction of different shear-and Rayleigh–Lamb-guided waves
in plates with a discontinuity such as a notch or an internal void. The problem was solved …

Ultrasonic synthetic aperture focus techniques (SAFTs) using less than the total number of
available array elements to transmit (“sparse” transmissions) have been recently used in …

This article presents improvements to ultrasonic imaging of solid platelike structures using
the minimum-variance distortionless response (MVDR) beamforming processor. The primary …

This paper presents a probabilistic acoustic emission (AE) source localization algorithm for
isotropic plate structures. The proposed algorithm requires only one sensor and uniformly …

An interposed coupling material between an ultrasonic transducer and the test medium can
be present in various non-destructive inspections and structural health monitoring imaging …

Abstract Ultrasonic Synthetic Aperture Focus (SAF) techniques are commonly used to image
structural defects. In this paper, a variation of SAF based on ideas borrowed from Matched …