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Micromagnetic Stress Determination on Tailored Blanks

Hans Kurt Tönshoff, Thomas Friemuth, Ines Oberbeck and Harald Seegers
Institut für Fertigungstechnik und Spanende Werkzeugmaschinen
Schlosswenderstr. 5, 30159 Hannover
Telephone: ++49/511/762-5206
Telefax: ++49/511/762-5115

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Abstract

Introduction

Barkhausen noise

Experimental set-up

Calibration test

Welding of thin ferromagnetic sheets

Results

Conclusion

Acknowledgement

References

  1. Heyn, H., Decker I., Wohlfahrt H.: Tools and requirements for in-process quality control in laser beam welding. Proceedings of SPIE: Laser Material Processing: Industrial and Micorelectronics Applications, Vol. 2207, 1994
  2. Oberbeck-Spintig, I.: Einsatz der Barkhausenrauschanalyse zur zerstörungsfreien Eigenschaftsprüfung geschweißter Feinbleche, Diss., Universität Hannover, 2000
  3. Tiito, S.: Magnetoelastic Testing of Uniaxial and Biaxial Stresses. Int. Conf. Residual Stresses, Soc. Francaise de Metallurgie, Nancy, 1988.
  4. Theiner, W.A.: Micromagnetic techniques. in Structural and Residual Stress Analysis by Nondestructive Methods, ed. V. Hauk, Elsevier Science B.V., 1997
  5. Karpuschewski, B.: Mikromagnetische Randzonenanalyse geschliffener einsatzgehärteter Bauteile. Dr.-Ing. Dissertation, University of Hannover, 1995.
  6. Tönshoff, H. K.; Karpuschewski, B.; Oberbeck, I,: Residual stress determination of ferromagnetic sheets. Proc. SheMet'96, Enschede 1996, pp. 347-355.
  7. Tönshoff, H. K.; Karpuschewski, B.: Quality Control of Surface Integrity with Micromagnetic Techniques. Prod. Eng., Annals of the German Academic Society for Production Engineering, Vol. II/2 1995, pp. 203-206
  8. Tönshoff H. K., Karpuschewski B., Oberbeck-Spintig I., Seegers H.: "Non Destructive Stress Determination on Tailored Blanks", Production Engineering Vol. VI/2 (1999), pp. 143-146

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