XARION Laser Acoustics is a provider of unique, laser-based acoustic sensors. The membrane-free optical microphone uses an IP-protected principle of operation: it detects sound based on its ability to change the speed of light. Since no mechanically movable or deformable parts are involved in this approach, the sensor comes with a linear frequency response free from mechanical resonances. The microphone shows an unprecedented frequency bandwidth exceeding state of the art solutions by a factor of ten.
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Optical Microphone}
Membrane-free Optical Microphone
XARION's Optical Microphone enables a novel real-time process control approach. As a complementary solution to visual inspection, the sensor monitors processes via air-coupled ultrasound, contact-free.
Features:
- Membrane-free optical microphone
- Low self-noise level
- Frequency range: 10 Hz–2 MHz (acoustics and ultrasound)
- Dynamic range: 30–180 dB (A) SPL
Typical applications to monitor in the field of laser material processing are:
- Laser Welding
- Laser Powder Bed Fusion (LPBF)
- Laser Material Deposition (LMD – powder or wire based)
- Extreme high-speed laser material deposition (EHLA)
- Laser Cladding
- Laser Texturing or Structuring
- Laser Micromachining
- Laser Glass Processing
More information about the technology and the advantages can be found in an article published in the Laser Technik Journal: Download
Further technical articles have been published about the following applications:
- Laser welding: Download
- Laser Metal Deposition (LMD) for detection of hot cracks during and after the build process: Download
XARION's Optical Microphone can also be used for any other process in your production. Especially if you run into any limits with thermal, camera-based, optical, mechanical or any other monitoring technology, the acoustic most likely can help. See here a simple but very impressive demonstration:
Data sheets: Eta100 Ultra (80–180 dB (A) SPL) | Eta250 Ultra (50–150 dB (A) SPL) | Eta450 Ultra (30-130 dB SPL @ 50 kHz-2 MHz)
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NDT System}
Laser Ultrasound NDT Scanner
XARION’s Laser Ultrasound Non-Destructive Testing (NDT) Scanning System is a versatile and easy to operate turn-key solution for a wide range of non-contact NDT applications. The large scanning area allows for a variety of sample geometries and materials to be mounted and inspected. The acoustic signal is generated with XARION’s patented thermoacoustic or laser-based excitation technology. XARION’s proprietary Optical Microphone detects the acoustic signal transmitted or reflected from the sample, without the use of contact fluid. Through-transmission as well as single-sided (pitch-catch) measurements can be performed, allowing the detection of internal defects, delamination or porosity in a contact-free manner. The compact and rugged design suits operation in R&D laboratories as well as production environments. For time-sensitive applications, XARION also offers an eight-channel microphone array system.
Features
- Turn-key NDT system, including robotics and software
- Compatible with optical microphone and laser or thermoacoustic excitation
- One or eight-channel system
- A-, B-, C- & D-scans
- Sampling: 25 MHz/14 bit
- Step size from 0.01 to 5mm, scan rate up to 1600 measurements per second
- Spectral analysis, patented coded excitation
- Easy result image export in BMP format
- Raw data export in CSV format
Short introduction into the technology is provided by the following video:
And here a nice example from the automotive industry - Contact-free Spot Weld Inspection
Wenn Sie tiefer in die Technologie eintauchen wollen, können Sie die folgende Publikation lesen - Materialcharakterisierung durch berührungslose Erfassung von If you want to dive deeper into the technology you can read the following publication - Material characterization via contact-free detection of surface waves using an optical microphone: Download
Data sheet: Laser-Ultraschallscanner für die zfP
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Contact
Dmitry Badyukov
Tel: +49 1515 112 11 14
