Ensaio por ultrassom com as técnicas convencional A Scan e Phased Array em juntas soldadas dissimilares de aços carbono e aço inoxidável austenítico

Abstract

The non-destructive testing of internal structure of welded joints of nozzles in distillation towers, made of cladded sheets, provides a great challenge to quality management, due to limitations of applicable techniques such as ultrasonic and radiographic testing, which in most cases not are able to fully meet regulatory requirements. This project aimed to evaluate the applicability of the test by using ultrasound longitudinal waves and Phased Array techniques and possible solutions for the testing of these nozzles to meet those requirements. Tests show the phased array is the most reliable technique for the listed equipment in order of their results compared to other techniques that are insufficient or completely inapplicable.