Revista EIA

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Diseño y construcción de un sistema para examen no destructivo de fallas y defectos en metales utilizando señales ultrasónicas
(2013-11-26) Rodríguez, J. (Jairo); Vitola, Jaime; Sandoval, S. (Susana); Forero, Edwin
The present paper describes the design and construction of an electronic system for non-destructive inspection with ultrasound (NDTU), which is one of the most used techniques to evaluate without deteriorating metallic parts in several areas of the industry. The evaluation techniques that appear in this document are Time of Flight Diffraction (TOFD) and pulse-echo, for which, defects in welded metallic unions were incorporated deliberately (test plates). The implemented system consists of two angular transducers according to the technique used in each case, a pulser that suitably feeds the transducer, the methodologies of acquisition and digital processing of the information. In the document, A-Scan and D-Scan graphs that illustrate a typical case of analysis as example are included. Finally, the developed system has demonstrated to be effective, compared with examinations made using a commercial equipment of the same nature, and with another technique of inspection like radiography.