Application Note: Heat Treatment Defects on Camshaft Lobes
In this application camshaft lobes were inspected for soft spots (heat treatment defect) with non-destructive barkhausen noise method.
In this application camshaft lobes were inspected for soft spots (heat treatment defect) with non-destructive barkhausen noise method.
Thermal and mechanical treatments are available to relieve the residual stresses.
Distortion is the unexpected, uneven change in size or shape caused by dissimilarities in manufacturing and heat treatment processes.
Barkhausen noise gives information from the surface and very close area beneath the surface.
Barkhausen Noise Analysis (BNA) is based on a concept of inductive measurement of a noise-like signal, generated when a magnetic field is applied to a ferromagnet.