Source locations provide fundamental information on earthquakes and lay the foundation for
seismic monitoring at all scales. Seismic source location as a classical inverse problem has …

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 …

The underground cement pipeline network is critical in urban infrastructure, such as sewage
drainage and fluid transportation. Pipelines are deeply buried, so the damage is difficult to …

In the present work, an active source localization strategy is proposed. The presence of
active sources in a waveguide can have several reasons, such as crack initiation or internal …

The ultrasonic echo technique is widely used in non-destructive testing (NDT) of concrete
objects for thickness measurements, geometry determinations and localization of built-in …

Submarine pipelines are a safe and energy-efficient mode of gas transport. However, due to
the complex manufacturing process and harsh operating environment, submarine pipelines …

In modern industries, long-distance guided wave inspection has been routinely used for
various types of pipelines. The usage of T (0, 1) wave is always of great interests since it is …

Undetected inclusions in engineering components cause tremendous industrial expenses in
maintenance and repairs each year, with additional risks of catastrophic failures. This paper …

This paper offers a comprehensive critical appraisal and experimental comparison of
leading linear baseline-free techniques applied in guided wave-based structural health …

Abstract Non-destructive testing (NDT), as an indispensable technique for assessing
welding quality, is expected to continuously improve. In this study, to obtain welding flaw …