Centre d’innovació i Tecnologia BARCELONATECH

New ultrasound technique with industrial applications

The Centre for Sensors, Instruments and Systems Development (CD6 UPC)  has participated, in collaboration with CTM, in the development of a new laser ultrasonics (LUS) technique to generate ultrasound in metal materials using a source of laser radiation. The waves are propagated inside the material and reflected by internal flaws or changes in the medium. These waves reappear on the surface of the material, where they can be measured using interferometry techniques. The great advantage of this technology is that it does not require contact between the device and the material under analysis. This means that we can characterize materials with complex geometries, elements situated in aggressive environments, materials at high temperatures, elements in movement, and even elements situated several metres away. This is a non-destructive technique that can be easily incorporated into a production line. Applications have been developed for companies such as Tecnatom SA, which maintains nuclear power plants.