Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
Experimental analysis of cold work in an overlap joint of aluminum alloy for a wing-to-wing assembly
Submission Author:
Mellanie Nabak Rocha , MG , Brazil
Co-Authors:
Mellanie Nabak Rocha, Leandro João Da Silva, Núbia dos Santos Saad, Ruham Reis, Tobias Morais
Presenter: Mellanie Nabak Rocha
doi://10.26678/ABCM.COBEM2019.COB2019-2291
Abstract
Cold work is a method used to increase the fatigue life in aeronautical components by means of induced compressive residual stress. This is a result of strain hardening on the discontinuity area. Traditional cold work approaches are largely applied on aeronautical industry, but demand excessive time to be completed. Recent studies have shown that the cold work caused by the fastener riveting along with adequate drilling class might result in superior performance compared with the traditional cold work forms for structural joints. Therefore, this experiment was performed using several approaches: Finite Element Model of software CATIA®, literature comparison and actual fatigue testing. The main objective is to prove that cold work applied on a special drilling class with Pull-Stem pins in an overlap joint – similar to a wing-to-wing assembly – could result in the expected fatigue life improvement, in comparison to the same joint with Hi-Lite pins. The main potential contribution relies on a faster manufacturing method that provides higher fatigue life to the component.
Keywords
Cold work, drilling class, interference, Fatigue Life
