...Nooman Ben Khalifa; A. Erman Tekkaya A new innovative direct extrusion process, helical profile extrusion (HPE) is presented, which increases the flexibility of aluminum profile manufacturing processes. The application fields of such profiles can be seen in screw rotors for compressors and pumps...

...S. Wan, Research Fellow; G. C. Lim, Principle Research Fellow This paper presents an analysis of the transient flow, on pump shut-down, in abrasive suspension jet cutting machines as part of an effort to develop a fine-beam cutting system. The analysis was motivated by a need to clearly understand...

... (or equivalently, the specific volume) of a polymer / CO 2 solution by separately measuring the mass and volume flow rates of the solution flowing in an extruder at each temperature and pressure. A positive-displacement gear pump mounted on an extruder is used to measure the volume flow rate of the solution...