Effect of temperature on formability of AA6063 aluminum tubes in incremental forming process was investigated. Experiments are performed on AA6063 aluminum tubes. A spirally moving tool incrementally expands the tube wall. The tube is clamped from both ends while the deformation zone is not in contact with the die. A circumferential heating system is used to heat the tube due to the low formabi...

We describe the development and testing of a first-order motion estimation algorithm which maintains accurate fixation of features on surfaces undergoing three-dimensional motion, and determines the local affine motion parallax. The accuracy of the first-order flow estimation is much improved by the use of log-polar sampling. We investigate the contribution of fixation to this accuracy using sy...

Numerical analysis of open channel ̄ows has largely con®ned to using ®xed boundaries in the numerical codes. Given the size of the problem domain, using ®xed boundaries often taxes the computational resources since the e€ect of the boundary is transferred on to its adjacent node in the ®rst few iterations. In this work, we explore the performance of a moving boundary in conjunction with central...