%0 conference lecture %@ %A Kocak, M., Seifert, K., Yao, S., Lampe, H. %D 1990 %J Proceedings of the International Conference WELDING-90: Technology, Material, Fracture %P 307-318 %T Comparison of fatigue precracking methods for fracture toughness testing of weldments: local compression and step-wise high R-Ratio %U %X