وزارة التعليم العالي و البحث العلمي
Research centre in Industrial Technologies -CRTI-
EChahid Mohammed ABASSI
MECHANICS AND MATERIALS DEVELOPMENT DIVISION
Energetic and mechanics
- Mouloud AISSANI Research Director Team leader
- Abdelhalim ZITOUNI Senior Researcher B
- Lotfi BEGHDADI Senior Researcher B
- Taki Eddine REDDAH Research fellow
Energetic study of welding processes issued from different sources (electric and mechanic) [2022-2024]
Energy still plays a vital role in industrial and economic development and to improve the daily life. Behavior knowledge of the energy flows, the fluid flow and the amount quantity of input heat during the heating processes (of welding or recovery of solar energy) gives the opportunity to find the best welding parameters ensuring the optimal assembly (homogeneous / heterogeneous) of materials. On the other hand, it gives the possibility of putting a good design and a correct realization of the industrial solar systems, to give the best performance and the best profit. In this context, the objectives for this new project are based on two axes, the first axe is main and the other is secondary. By the main axis, we are interested to study the energy behavior of welds made by the TIG, FSW and FSSW/UFSW processes. The novelty is to take into consideration the mass transfer during the TIG electric arc welding operation, in order to take into account the filler metal effect in the welding and considering a deformable free surface of the weld pool. Also we study the possibility of making a thermal then thermo-hydrodynamic modeling of this heterogeneous electric arc welding. Furthermore we study the FSW process (and its variants FSSW /UFSW) for the thermal part and learn about the part of the flow of the material around the tool during the process. In addition, the work will be followed by experiments, in order to proceed the validation of the numerical models developed, for a better parametric prediction and to optimize those welding parameters of these processes (in homogeneous / heterogeneous). In the perspective of obtaining a better quality with a good yield during the operation, after having mastered and optimized the main process. Therefore, reduce the possible defects that usually appear in a weld, due to the bad choice of parameters. In the second axis, we are interested to study, the thermal modeling of the heat flows of a Cylindrical-parabolic or a Fresnel, solar energy concentrator with its absorption system by a specific fluid, to determine the in / out temperatures, yield and other important parameters. These devices use thermal flows during their operation and require specific monitoring for their realization. They have an industrial interest for the production of electricity and heat, in the field of the exploitation of clean and renewable energy.
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