This paper described the recent advancements in the field of highly nonlinear solitary waves (HNSWs) for the nondestructive assessment of structural materials such as aluminum and concrete. HNSWs are mechanical waves that can form and travel in highly nonlinear systems, such as one-dimensional chains of particles. HNSWs have a constant spatial wavelength and their speed, amplitude, and duration can be tuned by modifying the particles' material or size, or the velocity of the striker. We show that HNSWs can be used for the monitoring for cement and concrete curing and the detection of disbond in aluminum lap joints.
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