Tests on Square Twisted Steel Bars and their Application as Reinforcement of Concrete. Conclusion of Discussion on Dr. Hajnal-Konyi's Paper
On the other hand, the analogy between notched bars, as shown in Fig. 2 of Dr. Abeles’ contribution, and a bar firmly gripped in concrete was obvious. Fig. 30, reproduced from (28), clearly illustrated the effect of a notch on the stress-strain diagram.