A constraint-based approach for notch cleavage fracture toughness estimations

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URI: https://hdl.handle.net/11556/3736
ISSN: 0013-7944
DOI: 10.1016/j.engfracmech.2023.109574
Publication date
2023-11-15
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Abstract
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.
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Publisher Copyright: © 2023 The Author(s)
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Constraint , Elastic-plastic fracture mechanics , Fracture toughness , J-integral , Non-sharp defects , Notch effects , Q-factor , General Materials Science , Mechanics of Materials , Mechanical Engineering
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journal article
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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