Published in Acta Mechanica et Automatica
The beams of thin corrugated web afford a significant weight reduction compared with hot-rolled or welded ones. In the initial solutions, the flanges are made of flat plates, welded to the sinusoidal web sheet, requiring a specific welding technology. A new solution is proposed by the authors, in which the beam is composed by a web of trapezoidal c...
Published in Experimental Techniques
Fascinating sharkskin effect has drawn so many attentions in the recent several decades, and it been becoming more well-known since the Olympic Games in 2000, and there were many athletes wearing sharkskin swimming suit to obtain the good grades. Biological sharkskin is all covered by the tiny and stiff scales, and there are microgrooves sitting on...
For stationary gas turbines, the injection of water sprays into the compressor inlet is used to rapidly increase the power output. To fully utilize this technique a comprehensive understanding of the underlying phenomena is needed. An in-house CFD program was developed at Institute of Aerospace Thermodynamics (ITLR) Stuttgart which was validated on...
In this study, a boundary condition test was conducted on journal bearing materials (Al-Tin alloy and Lead-Bronze alloy) used in Peugeot and Toyota automobiles were examined at room temperature conditions. The results of experiments are presented in graphics which proves that the average loading capacities, PV factor and wear factor for the two all...
In this modern developing world finite element model is one of the main tools and they are becoming more and more advanced day by day in all mechanical fields. Before manufacturing a product the demands for finite element model is more between the manufacturers. The finite element method is considered as a powerful technique which is developed for ...
Deux questions sont soulevées dans cette contribution. (1) Est-il possible de tirer des fils conducteurs communs et en contrepartie de dégager des spécificités entre démarches d'enseignement des sciences, notamment entre mathématiques et autres sciences ? Ces fils seraient en particulier bienvenus pour une culture didactique scientifique des profes...
Two-wire tandem submerged arc welding process involves simultaneous depositions from two electrode wires with the leading wire usually connected to a DC power source and the trailing wire connected to a pulsed AC power source. The weld bead profile and mechanical properties in the tandem submerged welding are significantly affected by the leading a...
Published in EURASIP Journal on Wireless Communications and Networking
Delay/disruption tolerant networking (DTN) technology is considered a new solution to highly stressed communications in space environments. To date, little work has been done in evaluating the effectiveness and performance of the available DTN protocols when they are applied to an interplanetary Internet, especially in presence of a long link disru...
Shaft-mounted gearboxes are widely used in industry. The torque arm that holds the reactive torque on the housing of the gearbox, if properly positioned creates the reactive force that lifts the gearbox and unloads the bearings of the output shaft. The shortcoming of these torque arms is that if the gearbox is reversed the direction of the reactive...
Shaft-mounted gearboxes are widely used in industry. The torque arm that holds the reactive torque on the housing of the gearbox, if properly positioned creates the reactive force that lifts the gearbox and unloads the bearings of the output shaft. The shortcoming of these torque arms is that if the gearbox is reversed the direction of the reactive...
