Break of reciprocity principle due to localized nonlinearities in concrete

M Scalerandi; C L E Bruno; A S Gliozzi; P G Bocca

doi:10.1016/j.ultras.2012.01.010

Break of reciprocity principle due to localized nonlinearities in concrete

Ultrasonics. 2012 Aug;52(6):712-9. doi: 10.1016/j.ultras.2012.01.010. Epub 2012 Feb 16.

Authors

M Scalerandi¹, C L E Bruno, A S Gliozzi, P G Bocca

Affiliation

¹ Applied Science and Technology Department, Politecnico di Torino, Turin, Italy. marco.scalerandi@infm.polito.it

PMID: 22386302
DOI: 10.1016/j.ultras.2012.01.010

Abstract

The effects of localized nonlinearities on the reciprocity principle in the context of ultrasounds and nonlinear elasticity are discussed in this paper. Experiments will be presented to prove that a localized crack in a concrete beam causes a break of reciprocity in the ultrasonic response to a mechanical excitation. The link between non-reciprocity and asymmetry in the nonlinear response will be demonstrated and discussed as a tool for NonDestructive Evaluation.