ADapted knowhow
The laboratory analyses the behaviour of structures, materials, contacts and processes through multi-scale experiments, multiphysics models and numerical simulations to optimise their performances and predict their lifetimes. To do this it relies on its unique expertise in tribology, nanomechanics and surface physico-chemistry, non-linear dynamics, high and mid-frequency vibroacoustics, contact fatigue and durability, discrete and continuous mechanical modelling, and numerical and experimental mechanics.- Fundamental understanding of contact, friction, wear and lubrication phenomena, the study of technological solutions for controlling tribological interfaces, the mechanochemistry of surfaces and thin layers, control of damage due to fretting stress (aid in formulating lubricants, tribological surface engineering, nano-tribology and nano-rheology, electrical phenomena at interfaces, initiation and propagation of fretting-fatigue cracks, damage kinetics of connections).
- Strategies for seeking non-linear solutions, modelling the dynamics of uncertain structures, high and mid-frequency vibroacoustics (active control of vehicles, diagnostics and monitoring of vibrations, aeroelastic responses of bladed turbine wheels, durability of composite structures).
- Numerical simulations of multiphysical couplings, mechanical modelling of heterogeneous materials and surfaces, modelling and experimental simulations of fabrication processes, mechanics of living tissues (geoenvironment: control of structures and natural risks, surface fabrication processes and functionalities, design and manufacture of mechanical assemblies and structures, in-vivo mechanical behaviour of biological materials).
technical resources
LTDS develops and uses original equipment and simulation and modelling tools, such as:
- Specific tribometers: ultra-high vacuum analysis, elastohydrodynamic analysis, molecular analysis, vibro-impact dynamics;
- Electronic (TEM, SEM) and atomic force microscopes (electric and mechanical modes);
- XPS, AUGER and EELS spectroscopy, X-ray diffraction;
- multiscale and 3D roughness (tactile and optical);
- nano-indenters (dynamic and high temperature);
- imaging and field measures;
- multi-load vibration and fretting-fatigue test benches;
- shakers;
- dynamic motorisation of rotating machines.
Platforms: advanced tribometry, dynamics of rotating machines, contact fatigue, high performance processes, cutaneous bio-engineering, characterisation of materials and surfaces.
reputation & distinctions
LTDS has opened out internationally and has contacts all over the world due to its diversified range of activities, and academic exchanges and competences: Algeria, Germany, Belgium, Brazil, Canada, Chili, China, South Korea, Spain, United States, Finland, Greece, India, Indonesia, Ireland, Israel, Japan, Morocco, Mexico, Poland, Portugal, Czech Republic, United Kingdom, Russia, Senegal, Slovenia, Sweden, Switzerland, Tunisia, Turkey, Ukraine.
It is a member of the joint laboratory "ELyTLab", run by the University of Tohoku in Japan, the INSA de Lyon and the Ecole Centrale de Lyon. It participates actively in Investment for the Future Projects and national and international clusters. Its researchers, teacher-researchers and PhD students have received many prizes at international conferences, and honorary distinctions (4 medals).
LTDS is involved in 3 facilities of excellence including 2 which it supervises, and 3 laboratories of excellence, Investment in the Future Projects, driven by the University of Lyon in the following fields: sound sources and their effects on humans, biomechanics and engineering linked to ageing, aerostatic coupling, materials sciences and sustainable technologies.
- Labex: CELyA Lyon Acoustics Centre ▪ iMUST Institute of Multi-scale Science and Technologies ▪ SISE-MANUTECH mechanical, physical and chemical phenomena associated with surfaces and interfaces;
- Equipex: IVTV Health / cellular biology, instrumentation ▪ MANUTECH-USD Energy / physics, chemistry, surface engineering ▪ PHARE Energy/Structural mechanics
Member's area