Evaluation of Acoustic Emission Signal Parameters for Identifying the Propagation of Defects in Pressurized Tubes

Acoustic emission tests are highly relevant among nondestructive tests applied in equipment for the petroleum industry. This paper presents methodologies for the classification of acoustic emission patterns obtained in tests to identify propagation of defects in pressurized tubes. This work is a continuation of previous research. However, to estimate the accuracy of the classification and give greater reliability to previous results use is made of new signals with a greater number of parameters, and some new methodologies not used in the previous paper are presented. The new results show the efficiency of the pattern classification methods implemented and encourage the present publication.