— This is a review paper on swaging process and customized swaging machine that we were visited. Swaging machine is basically used to swage the parts. Swaging means reducing the diameter of rod. It also used for giving specific shape. The... more
— This is a review paper on swaging process and customized swaging machine that we were visited. Swaging machine is basically used to swage the parts. Swaging means reducing the diameter of rod. It also used for giving specific shape. The paper deals about swaging. Its types and development of new machine.
... Durval Rodrigues, Jr., Carlos A. Rodrigues, Erika B. Silveira, and Eduardo GM Romão ... Grant 131405/1998-5 and Grant 113645/2003-1, The authors are with the Grupo de Supercondutividade, Departamento de Engenharia de Materiais... more
... Durval Rodrigues, Jr., Carlos A. Rodrigues, Erika B. Silveira, and Eduardo GM Romão ... Grant 131405/1998-5 and Grant 113645/2003-1, The authors are with the Grupo de Supercondutividade, Departamento de Engenharia de Materiais (DEMAR), FAENQUIL, Lorena 12600-970 ...
Cold expansion technology is an extended method used in aeronautics to increase fatigue life of holes and hence extending inspection intervals. During the cold expansion process, a mechanical mandrel is forced to pass along the hole... more
Cold expansion technology is an extended method used in aeronautics to increase fatigue life of holes and hence extending inspection intervals. During the cold expansion process, a mechanical mandrel is forced to pass along the hole generating compressive residual hoop stresses. The most widely accepted geometry for this mandrel is the tapered one and simpler options like balls have generally been rejected based on the non-conforming residual hoop stresses derived from their use. In this investigation a novelty process using multiple balls with incremental interference, instead of a single one, was simulated. Experimental tests were performed to validate the finite element method (FEM) models and residual hoop stresses from multiple balls simulation were compared with one ball and tapered mandrel simulations. Results showed that the use of three incremental balls significantly reduced the magnitude of non-conforming residual hoop stresses and the extension of these detrimental zone.
