Lin Wu

TL;DR: The results demonstrate that not only the proposed models can predict the bead width and height with reasonable accuracy, but also the neural network model has a better performance than the second-order regression model due to its great capacity of approximating any nonlinear processes.

TL;DR: In this paper, a 3D transient heat transfer numerical simulation with temperature-dependent material properties is conducted to investigate temperature field evolution, thermal cycling character, temperature gradient and the effects of depositing directions on the thermal process of single-pass ten-layer rapid prototyping.

TL;DR: In this article, an experimental study was carried out to determine the optimal model of the bead cross-section profile fitted with circular arc, parabola, and cosine function.

TL;DR: In this paper, the thermal stress evolution and residual stress distribution in a single-pass multi-layer weld-based rapid prototyping are examined, and the effect of depositing directions on the residual stress and residual strain is studied by numerical simulation, after experimental verifications of the finite element model.

TL;DR: In this paper, an asymmetrical double-sided double arc welding (ADSAW) method is studied due to control residual angular distortion, where the arc distance between fore and rear torches and welding parameters are the key effective factors of angular distortions.