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Proceedings Paper

Recent developments on the generation and detection of highly nonlinear solitary waves for NDE applications (Conference Presentation)

Paper Abstract

We describe the feasibility and the repeatability of highly nonlinear solitary waves (HNSWs) in nondestructive evaluation (NDE) of different materials and structures. HNSWs formed by tapping the first particle of a one-dimensional chain of spherical particles in contact with the material or the structure being assessed. This way, one pulse forms and travel within the chain, and one or more pulses (depending on the mechanical properties of the contact structure) reflect back to the chain at the chain/structure interface. The hypothesis is that the reflected pulses features such as their amplitude or velocity depend on the stiffness of the material or the structure in contact with the chain. The results show that the time-of-flight (TOF) is an appropriate wave feature for NDE applications because it is highly repeatable and influenced by the mechanical properties of contact material/structure. In the future, the proposed NDE method may potentially serve as a cost-effective tool for the rapid evaluation of existing structures.

Paper Details

Date Published: 3 April 2018
PDF
Proc. SPIE 10599, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XII, 105991F (3 April 2018); doi: 10.1117/12.2296432
Show Author Affiliations
Amir Nasrollahi, Univ. of Pittsburgh (United States)
Piervincenzo Rizzo, Univ. of Pittsburgh (United States)


Published in SPIE Proceedings Vol. 10599:
Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XII
Peter J. Shull, Editor(s)

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