Analytische und experimentelle Untersuchungen zur Schwingfestigkeit CO_2-laserstrahlgeschweisster Grobbleche aus Stahl Abschlussbericht

Abstract

In order to contribute to the formulation of well-founded test methods and test criteria for laser welded thick steel plates, Woehler fatigue test curves have been determined. Finite element and border element calculations were applied to life expectancy prediction using the notch tension concept by Radaj/Seeger and the fracture mechnical calculation of stable crack propagation. It is demonstrated that there exist no significant differences between the Woehler curves of laser welded and of conventionally welded plates. A characteristic feature of laser welded T-butt seams consists in the comparatively low a-parameter. (WEN)Available from TIB Hannover: RA 489(554) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman