Originally developed for diagnostic ultrasound imaging, piezoelectric transducers are the
most widespread technology employed in optoacoustic (photoacoustic) signal detection …

This paper presents a comprehensive overview of Laser Ultrasonic Testing (LUT) and its
applications in composite materials. The working principles of LUT are thoroughly …

Additive manufacturing (or three-dimensional (3D) printing) is constantly growing as an
innovative process for the production of complex-shape components. Among the seven …

Additively manufactured components are gaining popularity in aerospace, automotive and
medical engineering applications. Additive manufacturing (AM) offers tremendous cost …

Ultrasound detectors use high-frequency sound waves to image objects and measure
distances, but the resolution of these readings is limited by the physical dimensions of the …

This article presents a comprehensive review of the laser-based guided ultrasonic waves
propagation imaging (G-UPI) system and respective signal/data processing methods related …

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 …

In this article, we present an overview of recent progress in non-contact remote optical
detection of ultrasound in application to nondestructive testing and evaluation of materials …

Inspection of adhesively bonded metallic plates, commonly used in aircraft structures,
remains challenging for modern non-destructive testing (NDT) techniques. When a probing …

Abstract The Laser Ultrasonic (LU) technique has been widely studied. Detected ultrasonic
signals can be further processed using Synthetic Aperture Focusing Techniques (SAFTs), to …