Métodos de melhoramento da resistência à fadiga em juntas soldadas

Abstract

The proposed work presents the bibliografy review of the fatigue resistance improvement process. Not just the biggest structures, but equipment present as the time, cracks, whose mechanism is placed by the cyclic load application at service. In this mechanism the collapse of a structure occurs below the yield strengths of material. The process that was presented in this work have the objective of the create a notch on the weld toe, by abrasion, refusion or plastic deformation for improve the fatigue resistance of the welded joint. The IIW, will be used in this work as one of the main research sources because there are lot of documents suggesting parameters to application of each fatigue resistance improvement process. The work presents also the research carried out with the objective to analyses the specimen that were submitted to cyclic load treated to thin out, refusion or plastic deformation.