Residual stress and its distribution are the key indicators to ensure structural integrity.
However, current ultrasonic methods are not appropriate for complex stress measurement …

Realistic structures with complex features have been intricate challenges for structural
health monitoring (SHM) with permanently installed transducers. Poor conformability of …

In this paper, we present an experimental observation of the phenomenon known as zero-
group velocity (ZGV) combined harmonic generation, which is induced by the mixing of …

This study presents a novel optimization method for Lamb wave mode selective transducers,
surpassing traditional interdigital transducers (TIDT) by employing non-uniform electrode …

Laminate composites are widely used in industrial applications due to their high material
strength and efficiency. In such materials, impact loads can cause internal delaminations at …

Structural health monitoring (SHM) has been increasingly investigated for decades. Different
physical principles have been developed for damage identification, such as electronics …

In this paper, we provide a comprehensive technical review on polyvinylidene fluoride
(PVDF-based material processing and characterization as well as device developments for …

Bearings as indispensable parts of modern industry, play the key role in the rotating
performance, quality, and reliability of mechanical equipment. It is necessary to develop …

The fascinating non-propagating lamb wave modes, Zero-Group-Velocity (ZGV) modes,
have ignited profound research curiosity. ZGV modes possess the distinctive attribute of an …

External impact on high-stiffness structures such as aircraft and wind turbine blades are a
common phenomenon in engineering practice, which may cause serious security risks to the …