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3 April 2018 Recent developments on the generation and detection of highly nonlinear solitary waves for NDE applications (Conference Presentation)
Amir Nasrollahi, Piervincenzo Rizzo
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Proceedings Volume 10599, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XII; 105991F (2018) https://doi.org/10.1117/12.2296432
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2018, Denver, Colorado, United States
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.
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Amir Nasrollahi and Piervincenzo Rizzo "Recent developments on the generation and detection of highly nonlinear solitary waves for NDE applications (Conference Presentation)", Proc. SPIE 10599, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XII, 105991F (3 April 2018); https://doi.org/10.1117/12.2296432
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KEYWORDS
Nondestructive evaluation
Particles
Interfaces
Spherical lenses
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