Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
THE EFFECT OF MECHANICAL VIBRATION ON STRESS RELIEVING OF WELDED JOINTS
Submission Author:
Maria Cindra Fonseca , RJ , Brazil
Co-Authors:
DANILO CESAR DE AZEVEDO MONTEIRO, Tatiane de Campos Chuvas, Maria Cindra Fonseca
Presenter: DANILO CESAR DE AZEVEDO MONTEIRO
doi://10.26678/ABCM.COBEM2019.COB2019-2156
Abstract
The knowledge of the nature and magnitude of the residual stresses present in mechanical components, as well as techniques that may help reducing the residual stress levels, are very important for several industrial applications. In welding processes there is always residual stresses generation, which will influence the performance of welded structures in service. The present paper analyzes the efficiency of mechanical vibration stress relief process of welded joints of HSLA LNE 380 steel by the GTAW process. The residual stresses were analyzed by X-ray diffraction technique using the sen²ψ method. An average reduction of 61% in the residual stresses was after application of the high-amplitude sub-resonant frequency.
Keywords
Residual stresses, HSLA LNE 380 steel, GTAW Welding, Vibratory stress relief, X-ray diffraction technique
