Analysis
LOCIE's analysis platform comprises various types of equipment designed to assess indoor air quality and characterize energy conversion processes, whether biological (methanization, microbial cells) or physical (organic photovoltaics). The range comprises the following main devices:
In addition to the specific LOCIE platform, we share with the Université de Savoie an electron microscopy platform, a laser granulometer, a gas chromatograph coupled to a mass spectrometer, and a range of materials characterization equipment (DSC, DMA, X-ray diffractometer, etc.).
Structure
The "halle Margeriaz" structural platform is designed to test the mechanical behavior of structural elements from scale 0.4 to 1. It is equipped with several test benches. A horizontal test rig used to load large parts in tension or compression, and a 3.15 m wide, 4 m high gantry used for different types of test: bending, shear, tension and compression. The equipment has been dimensioned to ensure that deformations remain low, up to 300 kN. They can be fitted with various instruments, including 2 electric cylinders (2 times 120 kN) and 1 hydraulic cylinder (300 kN). Acquisition equipment also includes accelerometers and a high-definition camera for image cross-correlation. The whole system is simultaneously controlled by a central acquisition unit. This equipment is used to study the quasi-static and vibratory behavior of masonry walls and connections of reinforced concrete elements in particular.
Visualization
LOCIE has:
- a high-resolution 15MPix AVT GE4900 camera.
- high-power lighting devices.
- a PIV (Particle Image Velocimetry) measurement bench comprising a dual-pulse laser (DualPower 65-15) and a 4MPix double-frame camera (FlowSense 4M). An automated system for moving the laser and camera enables relatively large areas to be examined with the utmost precision. It is used in many applications to characterize fluid flows (water, air, etc.) by measuring velocity fields. Examples of applications: building aeraulics ("double skin" walls, air flow control in wood-frame walls), natural convection in a closed cavity (boundary layer, thermal plume), vegetated wall.
- a particle generator to seed the air with tracer.
- a macro lens for microfluidic PIV (in microchannels).
- a laser tomography system to visualize a cross-section in a fluid flow (RayPower 2000 laser + Basler camera).
- an infrared thermography system for measuring the temperature field of a surface at a distance from the infrared luminous flux.
- two high-speed cameras.