Shear horizontal (SH) waves are of great importance in structural health monitoring (SHM)
and nondestructive testing (NDT), since the lowest order SH wave in isotropic plates is non …

Research into the use of nonlinear ultrasonic guided waves for nondestructive evaluation is
expanding at a high rate because of the great potential benefit that they possess for early …

Interest in using the higher harmonic generation of ultrasonic guided wave modes for
nondestructive evaluation continues to grow tremendously as the understanding of …

Considering the high sensitivity of the nonlinear ultrasonic measurement technique and
great advantages of the guided wave testing method, the use of nonlinear ultrasonic guided …

Herein, we developed a nonlinear ultrasonic three-wave mixing technique to more
accurately detect and localize early-stage fatigue cracks. First, we derived the theoretical …

In this work, we analyze theoretically and observe experimentally the frequency mixing
response induced by the collinear interaction of two primary Lamb waves with different …

Higher order spectral analysis is used for structural damage detection based on nonlinear
vibro-acoustic modulations. A combined low-frequency vibration and high-frequency …

Abstract Evaluation of fatigue damage using nonlinear guided wave mixing has been
studied extensively over the past decade. It was found that the combinational harmonics as …

Nonlinear ultrasonic Lamb waves are popular to characterize the nonlinearity of materials.
However, the widely used nonlinear Lamb mode suffers from two associated complications …

Laser ultrasonics is a promising non-contact inspection technique but faces challenges of
low signal-to-noise and low amplitude under non-destructive thermoelastic regime. In this …