On 31 may 2013, date of Maurice Allais’ birth, the one and only French who has ever been awarded the Nobel Prize of Economic Sciences, a ceremony took place in order to deliver the First Maurice Allais’ Prize of Economic Sciences.
Thermomechanical stresses are very high under nowadays conditions where oil and gas wells are drilled deeper. They are responsible for heavy demands on tools, in terms of shock and abrasion. The service life of the active part of these drilling tools is therefore strongly decreased. As a result, the change of tools, which is very expensive and risky, becomes more frequent.
In the study of Elodie Sorlier, the mechanical properties of the graduated cutters have been tested in terms of hardness, shock resistance, resistance to abrasion and compression. Furthermore, residual stresses have been measured on commercial and graduated cutters. These mechanical tests show that the gradation process developed in this work makes it possible to improve the shock resistance of the cutters without decreasing their abrasion resistance. These results can be the beginning of the development of a new type of cemented carbide WC-Co, with applications to fields broader than drilling.
This study has been carried out in partnership with two laboratories of MINES ParisTech Centre des Matériaux in Evry and Centre de Géosciences in Fontainebleau, for Varel Europe, a drilling tool manufacturer based at Ibos (64).
Maxime Trocmé's PhD thesis took place within the framework of a partnership between the Center for Energy and processes of MINES ParisTech and VINCI (World largest construction company). The work was conducted full time in the R&D department of VINCI Construction France.
After a motivating six month internship at the CEP and engineering school graduation, Maxime Trocmé was desirous to acquire more competence on building eco-design. This doctoral thesis was a way to fulfil this wish in a theoretical (building models) and practical way (real building studies). Since it took place within the frame work of a CIFRE convention, it was also an opportunity to gain professional experience.
In his thesis Vladislav Yastrebov provides a self-consistent manual on computational contact mechanics which includes an exhaustive presentation of classical numerical methods and some original developments: new geometrical projection techniques, an efficient contact detection algorithm for parallel computer architectures, an efficient method to treat contact between a rigid and a deformable solids and an algorithm to simulate wear. He also introduced a generalized tensor algebra, which aids all geometrical developments.
Vladislav Yastrebov awarded for his thesis, the CSMA (Computational Structural Mechanics Association) award and the Prix Paul Caseau by French Academy of Technology and Electricité de France.
Computer communication networks are a very exciting field of research. Despite their widespread use, they are still in their infancy. Moreover, the recent use-cases have not been foreseen in the initial designs. A lot of clean-slate proposals can be proposed to address them but to be usable, an incremental path needs to be offered in order to provide compatibility with the other communications peers.
The goal of the research of Olivier Mehani was to investigate how to support user applications for current mobile terminals by selecting the best network configuration under competing requirements of best applications quality, lowest battery use and reasonnable access prices.
The thesis of Anne-Sophie Trébuchet-Breitwiller examines six empirical cases, three on perfume and three on wine making: the development of a branded perfume in a large marketing-based firm; a niche perfume designer and manufacturer (“Editions de Parfum Frédéric Malle”); natural raw materials processing for fine fragrance at a supplier in Grasse (“Laboratoire Monique Rémy”); quality improvement by a Burgundy winemaker; wine and vine care in a great estate (“Domaine Leflaive”); the history and the contemporary success of a reputable estate (“Domaine de la Romanée-Conti”).
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