Publications

Proceedings of DAGA 2019 Rostock  

Air-Coupled Ultrasonic Inspection of Fiber-Reinforced Plates Using an Optical Microphone

Authors:

Janez Rus, David Kulla, et al.

Contents:
  • Inspection of  fiber-reinforced plates with the optical microphone and classical air-coupled ultrasound devices
  • Result: the XARION technology shows a better spatial resolution than state-of-the-art piezoelectic receivers
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Ceramic Industry 02/2019

Non-Contact Ultrasound Diagnostics for the Ceramic Industry

Authors:

Fabian Lücking

Contents:
  • Detection of tiny cracks in ceramic workpieces with the help of XARION's optical microphone
  • Monitoring of acoustic emissions without the need for physically contacting the workpiece 
PDF

Composite Structures 12/2018

Impact damage assessment in biocomposites by micro-CT and innovative air-coupled detection of laser-generated ultrasound

Authors:

Balthasar Fischer, Fabrizio Sarasini, et al.

Contents:
  • Joint publication of XARION, Airbus Operations S.A.S, Università di Roma and CNRS-ENSMA
  • Superior inspection resolution was achieved with the optical microphone and laser-based excitation
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Elektrotechnik und Informationstechnik 11/2018

Development of an innovative measurement system for audible noise monitoring of overhead lines

Authors:

U. Schichler, W. Troppauer et al.

Contents:
  • Audible noise monitoring of overhead lines with XARION's optical microphone
  • Operation in proximity of high electric fields without interferences 
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Structual Control Health Monitoring Journal 03/2019

Online cracking detection by means of optical techniques in laser‐cladding process

Authors:

Aitor García de la Yedra, Michael Pfleger, et al.

Contents:
  • This paper shows that XARION’s sensor technology can be used for the in-process monitoring of a laser-cladding process.
  • Comparison of the optical microphone against other online monitoring systems for laser cladding processes 
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Proceedings of DAGA 2018 München 

Ultrasound inspection of spot-welded joints

Authors:

Wolfgang Rohringer, Thomas Heine, et al.

Contents:
  • Joint publication of XARION with PORSCHE Leipzig GmbH, presented at the DAGA Conference 2018
  • Spot weld characterization in steel, with a single-sided NDT setup using XARION's optical microphone
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Sensor Magazin (German) 09/2017

Optisches Mikrofon: Neue »Ohren« für kontaktfreie industrielle Prüfverfahren

Authors:

Balthasar Fischer, Nils Panzer, et al.

Contents:
  • Non-contact air-coupled system for industrial process monitoring and non-destructive material testing
  • Material fatigue testing
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Laser Technik Journal 5/2017

Acoustic Process Control for Laser Material Processing

Authors:

Balthasar Fischer, Wolfgang Rohringer, et al.

Contents:
  • New approach for in-line process monitoring for laser material processing 
  • Emitted ultrasound reveals information about laser weld penetration depth 
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Optik&Photonik 5/2017

Listening to Ultrasound with a Laser

Authors:

Stefan Preisser, Balthasar Fischer, et al.

Contents:
  • Precise measurement of the ultrasonic field of piezoelectric transducers using the optical microphone
  • Results achieved in photoacoustic imaging
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Biomedical Optics Express 10/2016

All-optical highly sensitive akinetic sensor for ultrasound detection and photoacoustic imaging

Authors:

Stefan Preisser, Wolfgang Rohringer, et al.

Contents:
  • Image tests on biological tissue with a novel, all-optical sensor for photoacoustic imaging
  • Detection bandwidth of up to 22.5 MHz
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