Barkhausen noise analysis in practice: Crack detection

Barkhausen noise method can detect stress and hardness changes before cracks occur, but in some cases, it can be used for crack detection.

Cracks or defects in a material can disrupt the magnetic domain structure and cause changes in the Barkhausen noise signal. By analyzing the Barkhausen noise signal, it can be possible to detect microstructure changes next to crack and this can be used to localize cracks.

By verifying the crack with other methods one can find how the cracks affect the barkhausen noise signal and use that information for NDT crack detection.

Cracks on camshaft

We provide Barkhausen noise inspection systems for a wide range of steel components in following automation levels:


Inline/Robot Systems

RoboScan is an automated grinding burn and heat treatment defect detection system that can be integrated into production line.

GearScan 500 and user

Automated systems

Automated systems for quality inspection are tailored for offline use. Easy to use software makes inspections intuitive and systems can adapt to various component types.

CrankScan 200 with user

Semi-automated systems

Semi-automated and manual Barkhausen noise analysis systems are suitable for low volume measurements. The most simple Barkhausen noise measurements can be performed handheld with only a sensor and analyzer.

Barkhausen noise analysis with Rollscan 350 and general purpose sensor.

Manual systems

Manual Barkhausen noise stands are grinding burn and heat treatment defect detection systems for low-volume applications.

application: Cracks