Minimal Resistance of Engineering Materials to Brittle Fracture as Predicted by Local Approach

Krasowsky, A. J.; Pluvinage, G.

doi:10.1051/jp4:1996621

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…n is assumed to be the same as static strain hardening exponent because the Charpy hammer speed is 5.5 m.s. This induces a maximum local strain rate less than 10 2 s -1 for which n is unaffected according to [25].…”

Section: Discussion: the Use Of Instrumented Charpy Impact Test For P...mentioning

confidence: 99%

Dynamic Characterization of API 5L X52 Pipeline Steel

Belalia¹,

Rahmani

Lenkey

et al. 2012

KEM

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The objective of this study is examining the level of degradation caused by the welding process, the influence of defects by third parties and the speed of loading on the integrity of the pipeline. The use of Charpy instrumented pendulium coupled with the the volumetric method analysis allowed us to calculate the dynamic fracture toughness of the API 5L X52 pipeline steel in presence of a real defect characterized by its notch radius but also, to show the need for a second parameter to overcome the problem of fracture toughness transferability.

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Section: Discussion: the Use Of Instrumented Charpy Impact Test For P...mentioning

confidence: 99%

Dynamic Characterization of API 5L X52 Pipeline Steel

Belalia¹,

Rahmani

Lenkey

et al. 2012

KEM

Self Cite

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“…Fundamental information on the K µ -model is given elsewhere. [13][14][15][16] The mathematical expression of this model is given by…”

Section: An Assessment Of the Fracture Toughness Of A Material K Icmentioning

confidence: 99%

Study on ASTM E399 and ASTM E1921 standards

Said

2006

Fatigue Fract Eng Mat Struct

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A B S T R A C T Costs of ASTM E399 and ASTM E1921 tests, which were developed to determine the fracture toughness (K Ic ) and the ductile-brittle transition temperature of ferritic steels, respectively, are considered high and the procedures are also very complicated. In this study, a method, which is more cost-effective and easier to carry out, is proposed.Keywords fracture toughness; the ductile-brittle transition temperature. N O M E N C L A T U R EB = thickness of test specimen B * * = thickness of test specimen at T * * temperature B 0 = gross thickness of test specimen (side grooves ignored) B x = thickness of the specimen to obtain the ductile-brittle transition temperature C = constant H 0 = constant with thermal activation energy unit for a certain material k = Boltzmann constant K Ic = fracture toughness K 0 IC = value of K IC at T = 0 K K * * Ic = value of K Ic at T * * temperature K Id = dynamic fracture toughness K jc (0) = K jc for a specimen of size B 0 , K jc(med) = the median value of fracture toughness obtained by J-Integral.K min = 20 MPa (m) 1/2 . m = temperature sensitivity of fracture toughness n = strain hardening coefficient T = test temperature, K T k = constant temperature, K T 0 = reference temperature, K σ y (0) − σ 0 = effective value of yield stress when T = 0 Ḱ ε = plastic deformation raté ε 0 = constant with plastic deformation rate unit, depending on internal structure of material (pre-exponential factor) α = temperature sensitivity of yield strength σ c = the critical stress effective ρ c = distance from the crack tip σ y = yield strength at T temperature σ 0 = athermal part of yield strength σ * * y = yield strength at T

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On the “local approach” to the brittle fracture of structural materials

Krasovs’kyi¹

2006

Mater Sci

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Minimal Resistance of Engineering Materials to Brittle Fracture as Predicted by Local Approach

Cited by 4 publications

References 9 publications

Dynamic Characterization of API 5L X52 Pipeline Steel

Dynamic Characterization of API 5L X52 Pipeline Steel

Study on ASTM E399 and ASTM E1921 standards

On the “local approach” to the brittle fracture of structural materials

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