An energy approach to predict cleavage fracture under non-proportional loading

Wadier, Yves; Le, Hoai Nam; Bargellini, Renaud

doi:10.1016/j.engfracmech.2012.10.017

Cited by 4 publications

(3 citation statements)

References 37 publications

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“…The calibrated m and K min values correspond to the minimum value of the error function in Eq. (13). The minimized error in Eq.…”

Section: A S I M P L I F I E D C a L I B R A T I O N M E T H O Dmentioning

confidence: 99%

“…Substantial research efforts over the last few decades have developed statistical treatments of cleavage fracture based both on macroscopic approaches and on local approaches . The master curve approach has evolved into a standard procedure in characterizing the temperature dependence of the macroscopic fracture toughness over the DBT regime.…”

Section: Introductionmentioning

confidence: 99%

“…Integrity assessments based on such approaches for realistic structural details require a simplified and reliable approach to determine these key material parameters for engineering applications. Substantial research efforts over the last few decades have developed statistical treatments of cleavage fracture based both on macroscopic approaches [11][12][13][14][15] and on local approaches. [16][17][18][19] The master curve approach 7,12,14 has evolved into a standard procedure 20 in characterizing the temperature dependence of the macroscopic fracture toughness over the DBT regime.…”

Section: Introductionmentioning

confidence: 99%

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A K₀‐based calibration procedure for the Weibull stress cleavage model

Qian

Chen

2013

Fatigue Fract Eng Mat Struct

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This paper presents a simplified calibration procedure for the microscopic Weibull stress model to estimate the cumulative probability of cleavage fracture for ferritic steels. The proposed method requires two discrete values of the macroscopic Weibull scale parameter (K0) in contrast to the two sets of statistically significant fracture toughness data mandated in previous calibration schemes. The proposed approach predicates on the fundamental assumption that the macroscopic toughness, for specimens dominated by cleavage mechanisms, follow the three‐parameter Weibull model outlined in the testing standards. The calibration procedure thus generates two sets of fictitious toughness data corresponding to two sets of specimens with marked differences in crack‐front constraints. The calibrated Weibull parameters agree closely with the calibration results based on the conventional approach for the Euro steels. The proposed calibration also leads to an improved method to determine a limiting load level, beyond which extensive plastic deformation propagates in the specimen.

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“…The calibrated m and K min values correspond to the minimum value of the error function in Eq. (13). The minimized error in Eq.…”

Section: A S I M P L I F I E D C a L I B R A T I O N M E T H O Dmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%