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The discontinuity and discontinuity called, is a term from the material and testing technology. It generally describes a flaw in a measurement.

The term is mainly used in the field of non-destructive testing when material defects such as cracks, inclusions, pores, voids, doublings or other discontinuities in the structure can be discovered and cannot be directly qualified.

One speaks of a discontinuity when absorption , transmission (2.) , reflection or other physical properties on the workpiece to be tested change due to a defect. In the case of frequency-dependent test methods, discontinuities can usually be found that are greater than half the measurement wavelength .

Keyword: material discontinuities


  • Hans J. Fahrenwaldt, Volkmar Schuler, Jürgen Twrdek: Practical knowledge of welding technology: materials, processes, production , 5th edition, Springer Vieweg, p. 570.