Articles techniques et présentations

The design of products in the audio industry is to a large extent done via a combination of prior knowledge and trial-and-error. Such an approach will sometimes be seen described as an ‘optimization’ of said products, but we will here focus on the formal mathematical approach of ... En savoir plus

This work is focused on the development of a physical-mathematical model capable of predicting the temperature and water content fields within a pasta sample which is exposed to a stream of drying air flowing under turbulent conditions. Therefore, the equations concerning the transfer of ... En savoir plus

A novel injection molding tool temperature control system based on heat pipes is being researched at the Bielefeld University of Applied Sciences and Arts (HSBI). This temperature control technology offers great potential for improving product quality and saving energy in the production ... En savoir plus

When dealing with space and aerospace equipment, their ability to withstand the strong excitations produced during the launch must be tested by the manufacturers according to international standards requirements. In fact, structural subsystems of the rockets are commonly released by ... En savoir plus

There are different possibilities to simulate a bolted joint. If only the connection of parts in an assembly with the stress distribution and surface pressure between the components without the bolt itself is of interest, the thread of the bolt is omitted and only the effect of bolted ... En savoir plus

Simulation of laser processes are more and more efficient. In some cases, as welding and additive manufacturing, the physical phenomena are complex, multi-physics and multi-phases, thus some assumptions have to be done. For Laser Powder Bed Fusion, a laser beam melts and vaporizes the ... En savoir plus

Many (photo)electrolytic devices involve the generation of bubbles (e.g., hydrogen, oxygen). In these devices, bubble coverage on the surface of the electrode not only decreases the active area, but also induces optical loss.[1,2] Efforts in understanding the bubble detachment process ... En savoir plus

Urban road tunnels offer a promising solution to extend existing road infrastructure while mitigating air pollution and nuisances affecting nearby residential areas. By diverting traffic underground, valuable surface space becomes available to address other urban challenges. However, ... En savoir plus

Process Hardware for heating, etching and plasma deposition in vacuum processes on Silicon wafers or glass substrates face challenging requirements due to very shallow and extended structures. Molecular Flow calculations are used to evaluate staggered shields with the aim to protect ... En savoir plus

The presence of oxygen in metal installations can influence their flammability, which leads to frequent combustion ignitions. Various studies have been done to characterize this ignition, in order to classify metals according to their degree of flammability, and to minimize the risk of ... En savoir plus