Non destructive test in ceramic coating using a prototype for detection of pathology

Reference Presenter Authors
(Institution)
Abstract
09-097 JONAS ALEXANDRE PESSANHA, D.F.(UENF); ALEXANDRE, J.(Universidade Estadual do Norte Fluminense); Azevedo, A.R.(Universidade Estadual do Norte Fluminense Darcy Ribeiro); In civil construction there is a growing investment in the maintenance and repair of buildings, such as the pathologies in floors with ceramic coating. Among the most common pathologies are the poor settling of ceramic plaques that are characterized by the loss of adhesion of some plaques to their substrate base. Due to the probability of accidents involving users and repair costs, this is considered a serious condition. The aim of this work is to present a new methodology of non-destructive testing, based on the development of a tool based on the kinetic and acoustic response of a prototype, which, when a ceramic plate with loss of adhesion is produced, produces a hollow sound and a loss energy, allowing the identification of the occurrence of this pathology. Six different types of ceramic flooring were used, with and without pathologies, then the coefficients of restitution of the floors were determined. The capture of sounds originating from small impacts on floors occurred in a piezoelectric microphone through the "Realtime Analyzer" program, producing graphs that relate frequency, sound pressure and time. The results obtained by the prototype were compared to four other methods used in an in-piro way: wood cable, threaded rod, steel bar and metal sphere. It can be concluded that the efficiency of the prototype developed in the detection of the studied pathology, presents advantages in relation to the handling and perception of the kinetic-acoustic response, being able to be widely used in the buildings.
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