In this paper, an ultra-fast laser ultrasonic imaging method is proposed to provide an efficient
online monitoring of additive manufacturing (AM) processing. The innovations of the …

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 …

Composite materials are widely used in various fields and non-destructive testing (NDT) is
an important issue for these. Laser ultrasonic technology (LUT) can achieve the non-contact …

In-process inspection of the additive manufacturing process requires a technique that can
provide reliable measurements given the extreme operating environments, the small size of …

Polymer composite pressure vessels play an important role in various industries, promoving
lightweight and corrosion-resistant solutions. Ensuring their structural integrity is paramount …

Functionally graded material (FGM) has great advantages compared with homogeneous
material. However, it is prone to occur in delamination failure because of stress …

The dead zone in ultrasonic time-of-flight diffraction (TOFD) restricts the quantitation of near-
surface defects. Alternative TOFD techniques introduce other tip-diffracted/scattered waves …

The corrugated rolling process is a new type of metal clad plate production method, and the
high-precision testing of the corrugated interface is of great significance to the improvement …

The dispersion and attenuation of surface acoustic wave (SAW) are important indicators for
evaluating the damage of machined surface layer. However, the dispersion and attenuation …

Ultrasonic imaging is a useful nondestructive testing technology for visualizing internal
structural defects in structures. Despite its utility, since synthetic aperture focusing technique …