This paper presents a comprehensive review of the current state of knowledge of second
harmonic generation (SHG) measurements, a subset of nonlinear ultrasonic nondestructive …

Due to their sensitivities to a specimen's microstructural evolution during processes
including heat treatment and plastic deformation, ultrasonic measurements of the acoustic …

Sulfate reducing bacteria (SRB) are widely present in oil and gas industry, causing pitting
corrosion on pipeline steel. Stress corrosion cracking (SCC) often occurs in the presence of …

High-order harmonics and sub-harmonics that are engendered upon interaction between
surface Rayleigh waves and material flaws have been exploited intensively, for …

This paper proposes a new technique for the application of the second harmonic generation
(SHG) in Rayleigh surface waves to nondestructively quantify microstructural changes and …

Eddy current thermography (ECT) as one of the emerging nondestructive testing and
evaluation techniques has been used for defects detection in critical components, eg, fatigue …

Prevailing fatigue damage evaluation approaches that make use of the acoustic nonlinearity
of guided ultrasonic waves (GUWs) are sustained by simplified models, most of which depict …

This paper investigates the propagation of Lamb waves in thin plates with quadratic
nonlinearity by one-way mixing method using numerical simulations. It is shown that an A 0 …

A new nonlinear ultrasonic technique for nondestructive evaluation of concrete components
is developed and implemented to characterize the effects of carbonation on concrete. The …

A new high-power electromagnetic acoustic transducer (EMAT) solid state pulser system
has been developed that is capable of driving up to 4 EMAT coils with programmable phase …