Good news for MINES ParisTech, the Engineering school has shot up the rankings from 226-250 to 193.
Her score, this year, is remarkable as the French universities tend to lose ground.
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 of Materials in Evry and Centre of Geosciences 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 full time conducted 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 framework of a CIFRE convention, it was also an opportunity to gain professional experience.
The objective of the Thibaud Gérard's PhD work is to provide a systematic and detailed study of the morphology and properties of polylactide and polyhydroxyalkanaotes blends prepared in the molten state. Polylactide is derived from renewable resources such as corn or sugar and polyhydroxyalkanoates are produced by bacterial fermentation of sugar or lipids.
This work was performed in the frame of the Industrial Chair on Bioplastics, organised by CEMEF/MINES ParisTech and supported by Arkema, L’Oreal, Nestlé, PSA and Schneider Electric through the “Fondation des Industries Minérales, Minières et Métallurgiques Françaises”.
Elsa Berthet’s PhD thesis in management sciences deals with the stake of reconciling agriculture and environment. It highlights the fact that a new challenge for scientific research is to learn to manage environmental regulations within agro-ecosystems (i.e. cultivated ecosystems) in order to make agriculture sustainable. This thesis aimed to define a design approach of agro-ecosystems: can innovative design be applied to these specific objects? What are the methods and appropriate modes of governance to design and manage agro-ecosystems?
|©2009 Mines ParisTech|