RT Journal Article
T1 A constraint-based approach for notch cleavage fracture toughness estimations
A1 Logan, Oliver
A1 Hadley, Isabel
A1 Janin, Yin Jin
A1 Larrosa, Nicolas O.
AB A stress-based approach is used to evaluate the role of notch sharpness on effective toughness of S355J2 + N steel samples. A notch corrected constraint method based on a J-Q approach is proposed for the first time. The approach is calibrated using experimental fracture data of pre-cracked and notched SEN(B) samples and validated using notched C(T) data from open literature for the same material. A two-parameter Weibull model is used to describe the probability of failure to incorporate confidence levels into the analysis. The methodology shows to be a promising method for assessment of non-sharp defects where benefit may be taken from resolving non-sharp defects acuity.
SN 0013-7944
YR 2023
FD 2023-11-15
LK https://hdl.handle.net/11556/3736
UL https://hdl.handle.net/11556/3736
LA eng
NO Logan , O , Hadley , I , Janin , Y J & Larrosa , N O 2023 , ' A constraint-based approach for notch cleavage fracture toughness estimations ' , Engineering Fracture Mechanics , vol. 292 , 109574 . https://doi.org/10.1016/j.engfracmech.2023.109574
NO Publisher Copyright: © 2023 The Author(s)
NO Dr. N.O Larrosa would like to acknowledge the funding provided by the UK Engineering and Physical Sciences Research Council under grant no. EP/S012362/1 and EP/R513179/1. The lead author would like to thank the Advanced Computing Research Centre (ACRC) at the University of Bristol (www.bristol.ac.uk/acrc) for providing access to the Blue Crystal 4 & Blue Pebble GPU clusters for performing numerical simulations. The authors would also like to thank Prof Bob Ainsworth and Dr Anthony Horn (Jacobs) for their support and feedback, and Prof Sergio Cicero (University of Cantabria, Spain) for providing the additional data assessed as part of the validation.
DS TECNALIA Publications
RD 31 jul 2024