Laser ultrasonics

for Non-Destructive Testing

What are Laser Ultrasonics?

Laser ultrasonics use lasers to generate and detect ultrasonic waves. It is a non-contact technique used to measure materials thickness, detect flaws and carry out materials characterization.

Principle

The rapid absorption of a laser pulse generates an ultrasonic wave which propagates through the material. The ultrasonic wave reaching the surface and is then detected by a laser receiver.

What applications?

From the laboratory to the industry our Laser ultrasound technologies are well suited to a wide range of applications.

Quality control

When propagating through a specimen, the ultrasonic waves carry information about the inner structure. Similarly, when propagating along a surface, the information about the surface quality and surface coatings can be extracted. 

Thickness measurement

If the sonic velocity of the material is known, it is possible to measure the thickness of the specimen. Using a pulse-echo configuration (detection and generation on same side and superimposed), with the velocity of sound c and the time t between two peaks, the distance d in the material can be calculated: 2

Material characterization

Laser ultrasonics are used to measure fundamental material properties such as the elastic modulus, shear modulus and Poisson ratio. Such parameters are of great importance for the estimation of active stresses and life service.

Acoustic emission

The laser receiver can also be used independently, without the generation laser, to listen to acoustic emission occurring when the sample is under stress. Remote detection of acoustic emissions can be used for monitoring during manufacturing processes.

News

Bossa Nova Technologies becomes Sound & Bright!

Bossa Nova Technologies becomes Sound & Bright!

Formerly known as Bossa Nova Technologies, Sound & Bright is a tech company specialized in Laser Ultrasonics. Our expertise from Bossa Nova Technolgies has been transferred to a new dynamic company that focuses on developing new generations of laser-based systems...

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