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Proof of Concept for an Ultrasensitive Technique to Detect and Localize Sources of Elastic Nonlinearity Using Phononic Crystals

Articolo
Data di Pubblicazione:
2017
Abstract:
The appearance of nonlinear effects in elastic wave propagation is one of the most reliable and sensitive indicators of the onset of material damage. However, these effects are usually very small and can be detected only using cumbersome digital signal processing techniques. Here, we propose and experimentally validate an alternative approach, using the filtering and focusing properties of phononic crystals to naturally select and reflect the higher harmonics generated by nonlinear effects, enabling the realization of time-reversal procedures for nonlinear elastic source detection. The proposed device demonstrates its potential as an efficient, compact, portable, passive apparatus for nonlinear elastic wave sensing and damage detection.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
Miniaci, M.; Gliozzi, A. s.; Morvan, B.; Krushynska, A.; Bosia, F.; Scalerandi, M.; Pugno, N. m.
Link alla scheda completa:
https://iris.unito.it/handle/2318/1640352
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/1640352/339493/2017_Miniaci_PRL.pdf
Pubblicato in:
PHYSICAL REVIEW LETTERS
Journal
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Dati Generali

URL

https://arxiv.org/abs/1701.00451
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