Logan, OliverHadley, IsabelJanin, Yin JinLarrosa, Nicolas O.2024-07-242024-07-242023-11-15Logan , 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.2023.1095740013-7944https://hdl.handle.net/11556/3736Publisher Copyright: © 2023 The Author(s)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.enginfo:eu-repo/semantics/openAccessjournal article10.1016/j.engfracmech.2023.109574ConstraintElastic-plastic fracture mechanicsFracture toughnessJ-integralNon-sharp defectsNotch effectsQ-factorGeneral Materials ScienceMechanics of MaterialsMechanical Engineeringhttp://www.scopus.com/inward/record.url?scp=85171558449&partnerID=8YFLogxK