Caracterización de corrosión simulada mediante mapeo por ultrasonido con arreglo de fases.

Abstract

The purpose of this titration project is to characterize corrosion in steel through the use of reference blocks which simulate this deterioration process, for this, it was established an applicable methodology. As there are no blocks that present corrosive processes, standard samples were implemented taking as reference standardized parameters which include material specifications (ISO / DIS 19675), manufacturing processes (ASNT Manufacturing), for the geometry selection and the corrosion size (ASTM G46-18), guidelines that allowed to guarantee the similarity with the calibration blocks, and correspondence in the test. Reference blocks were obtained that simulated four corrosion geometry types, which were machined in two stages; the first allowed to achieve the desired thickness and roughness. In the second stage, the cavities were machined. At the end of each machining stage, the Mapping was made with Phased Array Ultrasonic Testing, (PAUT). The first stage culminated guaranteed that the blocks are free of discontinuities generated during manufacturing processes. On ending the second stage, the induced corrosion (geometric and dimensional) was characterized.