title: Effect of the presence and size of a localized nonlinear source in concrete.
abstract: The aim of the present letter is to identify the contribution of a macroscopic source of elastic nonlinearity in concrete, a medium which by nature is nonlinear, and belongs to the nonlinear mesoscopic class of materials. The influence of real, localized macro-cracks is characterized with respect to the intrinsic nonlinearity of the material. The influence of the size of the source on the amplitude of the measured nonlinearity is qualitatively demonstrated. A comparison is made between the changes in linear and nonlinear parameters.
authors.affiliation: Laboratoire de Caractérisation Non Destructive, Université de la Méditerranée IUT Aix-Provence, Avenue Gaston Berger, 13100 Aix en Provence, France. jean-philippe.zardan@univmed.fr
authors.forename: J-P
authors.initials: JP
authors.lastname: Zardan
authors.forename: C
authors.initials: C
authors.lastname: Payan
authors.forename: V
authors.initials: V
authors.lastname: Garnier
authors.forename: J
authors.initials: J
authors.lastname: Salin
mesh_terms: D003252:Construction Materials / Q000032:analysis*; D004548:Elasticity; D004868:Equipment Failure; D019544:Equipment Failure Analysis; D016014:Linear Models; D017711:Nonlinear Dynamics; D013314:Stress, Mechanical