Design - Simulation - Tests
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A joint laboratory to foster progress in machining and additive manufacturing
Experts from Luppiam(a laboratory shared by Cetim, Énise and École des Mines Saint-Etienne) have joined forces and combined their scientific skills to explore these two major research fields for the mechanical engineering industry.
With four projects relating to machining and two more relating to additive manufacturing,Luppiam, a joint laboratory specialising in machining and processes for the implementation of powders in additive manufacturing, focuses on fields that are important to players of the mechanical engineering industry. The goal is to foster progress in these major technologies for industrial manufacturers by combining the resources and skills from the Cetim Carnot institute, Énise (École nationale d’ingénieurs de Saint-Étienne)and EMSE (École des Mines Saint-Étienne)in a joint laboratory.
Machining as the main field of work
On the machining front, three PhD theses are being conducted within the laboratory. The first one aims to reduce the wear of cutting tools via a new simulation approach validated on industrial cases, while the other two focus on the prediction of induced residual stresses in turning and drilling. In that same field, the FUI “Impulsa”research project consists in using modelling to anticipate, right from the machine tool programming step, the mechanical and thermal deformation of the parts.
As to laser powder-bed fusion additive manufacturing, this field is covered by two specific PhD theses, shared by École des Mines de Saint-Étiennethrough the Luppiamlaboratory. The first one relates to the durability of parts made of martensitic stainless steel 17‑4 PH (X5CrNiCuNb16‑4), while the second one studies the influence of heat treatments on the properties of austenitic stainless steel 316L (X2CrNiMo17‑12‑2).
Contributing to basic research
Luppiamwas founded in 2007 by Cetim and Énise. In 2016, EMSE (École des Mines Saint-Étienne)joined Luppiamand provided its scientific skills in material characterisation. Today, Luppiam is one of the nine joint laboratories of Cetim, which also include Ledith(two-phase flows…), Latep(metrology assisted machining concept…), Comp’Innov(dimensioning of composite mechanical assemblies...) and Cetimat(anti-seize ceramic coating of stainless steels…).
Through its involvement in these structures, Cetim’s objective is to join forces with laboratories specialising in basic research in order to fully contribute to the technical advancements made by mechanical engineering companies.
Other informations
VibSEA – Controlling high frequency vibrations of aircraft engines
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Video: Cetim takes up the challenge of metal additive manufacturing
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In a new video, Philippe Lubineau, Chief Research Officer at Cetim, talks about this key techno...
Video: “I am Sure” project monitors metal additive manufacturing
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detection of incipient defects reveals its results in a new video. The “I am Su...
Results of studies
ASME Boiler and Pressure Vessel - Code Week Meetings - November 2019 - Version Anglaise
Dimensioning of form tapping – Phase 3
Tests of synthetic ropes –Lf200 curve
Material fatigue - Factors influencing the fatigue strength of metal of metal materials
JTC10 – Material efficiency – Summary of standards
References
Aluminium foams released into the stratosphere
( CNES)Remaining useful life: the turbine remains in operation
( Suez EVNA)CFD simulation to optimise performance
( TotalEnergies Fluids)Comprehensive support for validation plans
( Sonceboz)Support at every stage of development
( Purple Alternative Surface)Presentation
With product modelling and simulation potential solutions can be virtually optimized before they are really implemented. We tend to set up a more efficient design by taking fatigue life into account and optimizing safety factors within a fiabilist approach. The main goal is to achieve much shorter development deadlines. Major improvements are experienced in the field of simulation dealing with more and more complex and multi-physical phenomena.
This technological focus includes projects relating to : fiabilist design of products, functional requirement and performance qualification checking, analysis methods based on customer needs, design of clean and silent products, simulation of product behavior and operation.