Abstract
The research work aimed to present the usability of the cracked round bar (CRB) specimen type for the determination of the linear-elastic plain strain fracture toughness values (KIc or KQ) on steels; and to demonstrate the applicability of the testing results for the reliability assessment of structural elements having cracks or crack like defects. Micro-alloyed structural steel and heat resistant steel were tested at elevated temperatures, at 260 °C and 410 °C, respectively, using small-sized specimens with small diameters. Four different equations were used for the evaluation of the tests, and the determined fracture toughness values were compared with one another. Reliability assessment calculations were realised on two structural element models, critical crack sizes and safety factors were determined for all cases.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
