Statistical model for carbide induced brittle fracture in steel

Wallin, Kim; Saario, Timo; Törrönen, Kari

doi:10.1179/030634584790420384

Cited by 303 publications

(138 citation statements)

References 11 publications

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“…The current mode 1 a 1 so imp 1 i es, contrary to ear 1 i er ana 1 yses (14,(17)(18)(19)(20)(21), that the fracture stress for cleavage cracking is not identical for failure ahead of sharp cracks and rounded notches.…”

Section: Methodsmentioning

confidence: 99%

“…In stochastic terms, these models can be re-formulated using weakest link statistics (11,(18)(19)(20)(21)(22). Accordingly, the cleavage fracture toughness is estimated in terms of the volume of material within the p 1 as tic zone needed to assure the presence of an "eligible" cracked particle, at which the fracture criterion is…”

Section: Statistical Relation For Transgranular Cleavagementioning

confidence: 99%

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Statistical analysis of cleavage fracture ahead of sharp cracks and rounded notches

1986

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Section: Methodsmentioning

confidence: 99%

Section: Statistical Relation For Transgranular Cleavagementioning

confidence: 99%

Statistical analysis of cleavage fracture ahead of sharp cracks and rounded notches

1986

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“…Similarly, Wallin [178] and Wallin et al [187] obtained a useful engineering statistical model using the parameter K Jc , and showed that the cumulative probability of failure by cleavage fracture for structural steels at a specific temperature can be well characterized by the three-parameter Weibull distribution:…”

Section: Weibull Statistical Modelmentioning

confidence: 99%

Review of fracture toughness (G, K, J, CTOD, CTOA) testing and standardization

Zhu

Joyce

2012

Engineering Fracture Mechanics

596

161

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Stress intensity factor Energy release rate CTOD CTOA J-integral J-R curve K-R curve ASTM standard a b s t r a c tThe present paper gives a technical review of fracture toughness testing, evaluation and standardization for metallic materials in terms of the linear elastic fracture mechanics as well as the elastic-plastic fracture mechanics. This includes the early investigations and recent advances of fracture toughness test methods and practices developed by American Society for Testing and Materials (ASTM). The review describes the most important fracture mechanics parameters: the elastic energy release rate G, the stress intensity factor K, the Jintegral, the crack-tip opening displacement (CTOD) and the crack-tip opening angle (CTOA) from the basic concept, definition, to experimental estimation, test methods and ASTM standardizing practices. Attention is paid to guidelines on how to choose an appropriate fracture parameter to characterize fracture toughness for the material of interest, and how to measure the fracture toughness value defined either at a critical point or in a resistance curve format using laboratory specimens. The relevant ASTM fracture toughness test standards considered in this paper are E399 for K Ic testing, E561 for K-R curve testing, E813 for J Ic testing, E1152 for J-R curve testing, E1737 for J Ic and J-R curve testing, E1290 for CTOD (d) testing, a combined common test standard E1820 for measuring the three parameters of K, J and d, E1921 for the transition reference temperature T 0 testing and the master curve of cleavage toughness K Jc testing, and E2472 for CTOA testing. The effects of loading rate, temperature and crack-tip constraint on fracture toughness as well as fracture instability analysis are also reviewed.

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“…The Master Curve (MC) [17][18][19][20][21] is a fracture characterisation tool for cracked ferritic steels operating within their ductile-to-brittle transition zone (DBTZ). It is based on statistical considerations related to the distribution of cleavage promoting particles around the crack tip, and assumes that cleavage fracture of ferritic steels is activated by the presence of such particles Therefore, fracture is basically an initiation dependent process which, consequently, is assumed to be controlled by weakest link statistics and follows a three parameter Weibull distribution.…”

Section: The Notch Master Curvementioning

confidence: 99%

Structural integrity analysis of notched ferritic steels operating within their ductile-to-brittle transition zone: An approach from Failure Assessment Diagrams and the Notch Master Curve

Cicero

García

Madrazo

2015

Engineering Failure Analysis

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This paper provides a structural integrity assessment methodology for the analysis of ferritic steels containing notch-type defects and operating within their ductile-to-brittle transition zone. The methodology, based on the use of Failure Assessment Diagrams and the novel concept of the Notch Master Curve, has been applied to 323 experimental results performed on four different steels (S275JR, S355J2, S460M and S690Q), six different notch radii (from 0 mm up to 2.0 mm), two different types of specimens (CT and SENB), and three different temperatures within the corresponding ductile-to-brittle transition zone. The results validate the proposed assessment methodology.

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Statistical model for carbide induced brittle fracture in steel

Cited by 303 publications

References 11 publications

Statistical analysis of cleavage fracture ahead of sharp cracks and rounded notches

Statistical analysis of cleavage fracture ahead of sharp cracks and rounded notches

Review of fracture toughness (G, K, J, CTOD, CTOA) testing and standardization

Structural integrity analysis of notched ferritic steels operating within their ductile-to-brittle transition zone: An approach from Failure Assessment Diagrams and the Notch Master Curve

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