… order harmonics in guided waves is considered, … nonlinear guided elastic waves. The results
of this research show that the normalized acoustic nonlinearity measured with Lamb waves …

… Further advantages could be realized by implementing noncontact methods such as laser
excitation and laser Doppler vibrometer measurements. However, due to the dispersive …

… how to maximize the nonlinearity to enhance the sensitivity of the measurement, and how
to … To formulate the field equations for nonlinear guided waves, we use a Lagrangian …

… This research demonstrates that the accumulated plasticity, which causes an increase in
the acoustic nonlinearity, can also be measured with Lamb waves in a manner similar to …

… [29] measured second harmonics with thermal fatigue damage in pipes. Choi et al. [30]
applied the fundamental torsional mode of guided wave in pipe-like structures and measured the …

… from the measurement system. While bulk waves, surface waves, and guided waves have
undergone extensive study in wave mixing, the potential of feature-guided wave (FGW) mixing …

… measurement of the neutral temperature in CWR based on nonlinear ultrasonic guided
waves… in order to explain the origin of nonlinear effects arising in complex waveguides under …

… The measurement of stress in a structure presents considerable interest in many fields of
engineering. In this paper, the diagnostic potential of nonlinear elastic guided waves in a …

… part I: 3D acoustic wave field measurements”). The result is compared to phase … “wave field
plate” in section “Guided wave measurements part I: 3D acoustic wave field measurements” …

… input signals of various magnitudes and measure the response signals at a single location
[34], [35], [36], [37]. If the measured nonlinear guided waves are generated due to the material …