Force Technology Corp.

Technical University of Denmark

Banestyrelsen

Alexander Bardenshtein

Yukihiro Kusano

Niels Krebs

Steen Arnfred Nielsen

Henrik Bindslev

Henrik Junge Mortensen

Niels Kloppenborg Laursen

This invention relates to a plasma surface modification process (and a corresponding a system) of a solid object () comprising creating plasma () by a plasma source (), application of the plasma () to at least a part of a surface () of the solid object (), generating ultrasonic high intensity and high power acoustic waves () by at least one ultrasonic high intensity and high power acoustic wave generator (), wherein the ultrasonic acoustic waves are directed to propagate towards said surface () of the object () so that a laminar boundary layer () of a gas or a mixture of gases () flow in contact with said solid object () is thinned or destructed for at least a part of said surface (). In this way, the plasma can more efficiently access and influence the surface of the solid object to be treated by the plasma, which speeds the process time up significantly.

Enhancing plasma surface modification using high intensity and high power ultrasonic acoustic waves

A method of detecting defects in a railway track rail, the rail () having a longitudinal centre plane and a surface, the surface including a running surface (), the method comprising directing an excitation laser beam () to an excitation position () on the surface of the rail () to induce an ultrasonic wave in the rail (); and directing a detection laser beam () to a detection position () on the surface of the rail () to detect at least one predetermined property of the induced ultrasonic wave; wherein the excitation position () and the detection position () are located on the running surface () and displaced from the longitudinal centre plane of the rail ().

Detecting rail defects

Growing community of inventors

Hedehusene, Denmark

Alexander Bardenshtein