Aluminum/alumina composites are used in automotive and aerospace industries due to their low density and good mechanical strength. In this research, the effect of mechanical stirring of slurry in liquid-solid phase temperature and injection of alumina powder with inert gas (Ar) on microstructure and mechanical properties of Al-A356 alloy is investigated. In order to improve of the wettability a...

Abstract: Properly understanding heat flux characteristics is a crucial prerequisite to efficiently applying a regenerative burner in an aluminum reheating furnace. A series of experiments was conducted in this study in order to establish a database of the best available burners according to furnace temperature, excess air ratio, and flame combustion mode as they affect heat flux characteristic...

Harri Ehtamo • Raimo P. Hämäläinen • Pirja Heiskanen • Jeffrey Teich • Markku Verkama • Stanley Zionts Systems Analysis Laboratory, Helsinki University of Technology, POB 1100, 02015 HUT, Finland Systems Analysis Laboratory, Helsinki University of Technology, POB 1100, 02015 HUT, Finland Systems Analysis Laboratory, Helsinki University of Technology, POB 1100, 02015 HUT, Finland New Mexico Stat...

In this work, a narrow-linewidth linearly polarized fiber amplifier with record output power of 3.2 kW was achieved based on homemade polarization-maintaining Yb-doped corresponding to slope efficiency 79% and 3 dB linewidth 0.2227 nm. By examining various numerical aperture (NA) PMYDFs, the experimental investigation expanding mode instability (MI) threshold in PM amplifiers put display. And r...

COLI 2000. TEXTS AND CONTEXTS. (3 Credits) An introduction to the literary analysis of texts and the cultural and historical contexts within which they are produced and read. Significant class time will be devoted to critical writing and to speaking about literature. Each section of Texts and Contexts will have a focus developed by the individual instructor and expressed in its subtitle. This c...