Applying nonlinear resonant ultrasound spectroscopy to improving thermal damage assessment in concrete

C Payan; V Garnier; J Moysan; P A Johnson

doi:10.1121/1.2710745

Applying nonlinear resonant ultrasound spectroscopy to improving thermal damage assessment in concrete

J Acoust Soc Am. 2007 Apr;121(4):EL125-30. doi: 10.1121/1.2710745.

Authors

C Payan¹, V Garnier, J Moysan, P A Johnson

Affiliation

¹ Laboratoire de Caractérisation Non Destructive, Université de la Méditerranée, IUT Aix-en-Provence, Avenue Gaston Berger, 13625 Aix-en-Provence Cedex 1, France. cedric.payan@univmed.fr

PMID: 17471756
DOI: 10.1121/1.2710745

Abstract

Nonlinear resonant ultrasound spectroscopy (NRUS) consists of evaluating one or more resonant frequency peak shifts while increasing excitation amplitude. NRUS exhibits high sensitivity to global damage in a large group of materials. Most studies conducted to date are aimed at interrogating the mechanical damage influence on the nonlinear response, applying bending, or longitudinal modes. The sensitivity of NRUS using longitudinal modes and the comparison of the results with a classical linear method to monitor progressive thermal damage (isotropic) of concrete are studied in this paper. In addition, feasibility and sensitivity of applying shear modes for the NRUS method are explored.