MARINE INFRASTRUCTURES DIAGNOSTICS

 

 

 

With the help of an echo sounder allowing the cartography of the metal reinforcements of marine infrastructures (or not), we propose analyzes and diagnostics of states of the corrosion of certain structures with risks …

Non-destructive ultrasonic testing is a technique that is very close to the ultrasound control used in medical. Moreover, we often speak of ultrasound technique. It consists in sending an ultrasonic wave using a translator in a material that can be metallic, composite, plastic or ceramic and in collecting the presence or absence of reflection signals on internal discontinuities of the material (cracks , porosities, inclusions, etc …). This is a volumetric technique, unlike penetrant testing, magnetoscopy and eddy currents, capable of locating and dimensioning internal defects. It can be used in manual or automated mode, most often using a single access surface including for large parts and distances of several meters. Unlike the X-ray, it presents no risk in terms of occupational safety and health.

It is a method that requires a fairly high technical level of operators but is promised a very bright future with the advent of imaging techniques TOFD and Multielement Phased Array.

Laser scanning solutions (or Lidar) in dynamics make it possible to create georeferenced 3D point clouds over ranges of several hundred meters to obtain a very precise modeling of the environment. This modeling answers many problems: to calculate precisely and in a very short time the volumes of ores, to know the state of a riprap, a quay or a dyke, to measure distances to control the accessibility of certain industrial sites (example of the transport of offshore wind turbines, before boarding) or the conformity of the installation of guardrails

this expertise is being developed …