公开(公告)号：EP4386373A1

公开(公告)日：2024-06-19

申请号：EP23215409.6

申请日：2023-12-11

申请人： Xarion Laser Acoustics GmbH

发明人： KANIAK, Georg ,  FISCHER, Balthasar ,  ROHRINGER, Wolfgang ,  PÖRNBACHER, Josef ,  WUNDERL, Stefan ,  WEINMANN, Christoph

IPC分类号： G01N29/12 ,  G01N29/46 ,  G01N29/24 ,  G01N29/04

CPC分类号： G01N29/043 ,  G01N29/2418 ,  G01N2291/26720130101 ,  G01N29/12 ,  G01N29/46 ,  G01N2291/042820130101 ,  G01N2291/042720130101 ,  G01N2291/023120130101

摘要： The invention discloses a method and apparatus for testing material joints or material compounds having at least the following steps: (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. Followed by 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.