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.

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

KRUSHYNSKA, Anastasiia;BOSIA, Federico;
2017-01-01

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.
2017
118
21
214301-1
214301 -5
https://arxiv.org/abs/1701.00451
Miniaci, M.; Gliozzi, A. s.; Morvan, B.; Krushynska, A.; Bosia, F.; Scalerandi, M.; Pugno, N. m.
File in questo prodotto:
File Dimensione Formato  
2017_Miniaci_PRL.pdf

Accesso aperto

Tipo di file: PDF EDITORIALE
Dimensione 1.38 MB
Formato Adobe PDF
1.38 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1640352
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 141
  • ???jsp.display-item.citation.isi??? 131
social impact