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Nondestructive characterization of shot peened surface states by the magnetic Barkhausen noise method

: Hauk, V.; Theiner, W.A.

WCNDT '89. 12th World Conference on Non-Destructive Testing. Proceedings
Amsterdam, 1989
ISBN: 0-444-87450-X
World Conference on Non-Destructive Testing <12, 1989, Amsterdam>
Conference Paper
Fraunhofer IZFP ()
magnetisches Barkhausenrauschen; Makroeigenspannung; Mikroeigenspannung; mikromagnetische Prüfverfahren; röntgenographische Eigenspannungsmessung; Strahlen; Verfestigung; zerstörungsfrei

The residual stress state of shot peened steel sheets has been measured with X-ray, mechanical, and micromagnetic methods. The results show that macro- and microstresses, the work hardening depth and the homogeneity of shot peened states can be determined by the micromagnetic quantities. The procedure to get quantitative results is outlined briefly.