Non-destructive testing methods

X-ray diffraction

X-ray diffraction

Residual stresses can be measured non-destructively with X-ray diffraction method. X-ray diffraction provides reliable and objective data for quality control assessment.

X-rays have high energy and short wavelength when compared to visible light making them ideal for probing the interplanar distances (=residual stress) in crystalline materials.

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Barkhausen noise analysis

Barkhausen noise analysis

Barkhausen noise analysis is a non-destructive method involving the measurement of a noise like signal induced in a ferromagnetic material by an applied magnetic field.

There are two main material characteristics that will directly affect the intensity of the Barkhausen noise signal: hardness and stress.

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