The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2026
Filed:
Dec. 12, 2023
Xarion Laser Acoustics Gmbh, Vienna, AT;
Georg Kaniak, Vienna, AT;
Balthasar Fischer, Vienna, AT;
Wolfgang Rohringer, Vienna, AT;
Josef Pörnbacher, Vienna, AT;
Stefan Wunderl, Vienna, AT;
Christoph Weinmann, Vienna, AT;
Abstract
A method for testing material joints or material compounds includes: (a) providing an arrangement to be tested consisting of at least two components, connected via a material joint, (b) excitation of acoustic waves in at least one component, in the provided arrangement to be tested, with laser pulses from a laser light source, (c) detecting ultrasound waves in a gaseous layer adjacent to the provided arrangement to be tested with a membrane-free optical microphone, (d) evaluating the ultrasound waves detected by determining an acoustic pressure variation of the ultrasound waves; and (e) evaluating the respective material joint based on the occurring mode conversion of a symmetrical mode with a first out-of-plane deflection into an asymmetrical mode with a second out-of-plane deflection, and/or based on acoustic standing waves at resonant frequencies in the material joint.