Abstract: Control of arc length is an essential component of the automation of arc welding processes. It is even more critical in gas metal arc welding where the arc length can vary substantially since ...

Abstract: A two-dimensional transport-diffusion equation is derived for diffusion in metal cutting by an extension of Fick’s second law. The analysis considers the dynamics of the cutting process and thus ...

Abstract: Earlier work has shown tool failure monitoring using frequency-based pattern recognition analysis of acoustic emission signals to be feasible while machining under fixed cutting conditions. However, ...

Abstract: Sensing of both gradual and catastrophic tool failure is a key aspect in producing high quality parts on fully automated machine tool systems. Acoustic emission provides a means of sensing ...

Abstract: A two-dimensional moving adaptive finite element analysis is presented for dual-beam laser welded tailored blanks. The phase change effect, temperature dependence of material properties, and ...

Abstract: An analytical expression is developed for the relationship between far-field acoustic emission (AE) signal and the propagation of a finite plane crack due to a nonuniform residual stress in a ...

Abstract: A lumped parameter dynamical model is developed to describe the metal transfer for gas metal arc welding in the globular mode. The oscillations of molten drop are modeled using a mass-spring-damper ...

Abstract: Fluid flow under a grinding wheel is modeled using a perturbation scheme. In this initial effort to understand the flow characteristics, we concentrate on the case of a smooth wheel with ...