This research conducts in situ nonlinear ultrasonic (NLU) measurements for real time
monitoring of load-induced damage in concrete. For the in situ measurements on a …

This research develops a nonlinear ultrasonic (NLU) technique, second harmonic
generation (SHG), to monitor the time-dependent microstructural evolution and shrinkage in …

We probe mechanisms controlling the nonlinear elastodynamic response of intact and
fractured rock under both fluid-saturated and dry conditions. We present the results of …

We study theoretically and experimentally the mechanisms of nonlinear and nonequilibrium
dynamics in geomaterials through dynamic acoustoelasticity testing. In the proposed …

The nondestructive evaluation of closed cracks is a challenging subject in ultrasonic testing.
Recently, nonlinear ultrasonic phased array with fixed-voltage fundamental wave amplitude …

We study the propagation of a finite‐amplitude elastic pulse in a long thin bar of Berea
sandstone. In previous work, this type of experiment has been conducted to quantify …

Transient hysteretic dynamic behaviors, commonly known as slow dynamics, have been
observed to exist in many materials, but a physical cause for the phenomena remains …

Additive manufacturing (AM) is becoming increasingly popular due to its ability to build parts
with customer-designed complex geometries. However, the lack of established quality …

To achieve higher signal-to-noise ratios (SNRs) in imaging closed cracks in the vicinity of a
surface, we propose a nonlinear surface-acoustic-wave phased array imaging method …

The objective of this research is to use nonlinear resonance ultrasound spectroscopy
(NRUS) to evaluate the sensitivity of the nonclassical hysteretic nonlinearity parameter, α to …