Fracture Resistance of Sheet Metals and Thin-Wall Structures. Part 1. Critical Review

Naumenko, V. P.; Limanskii, I. V.

doi:10.1007/s11223-014-9512-3

Cited by 7 publications

(1 citation statement)

References 47 publications

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“…With increasing loads in specific objects, such as a cracked specimen or a structural component, the crack-tip plastic zone is increasingly affected by the nearby traction free boundary according to small-scale yielding (SSY) theory. Due to the crack tip stress relaxation, the constraint level of specimens decreases and further contributes to the apparently increased toughness of shallow-cracked and tension-loaded geometries from fracture mechanics testing [6][7][8]. The stress field surrounding the crack is influenced by the crack tip constraint, which cannot be characterized by single fracture mechanics indicator.…”

Section: Introductionmentioning

confidence: 99%

Modelling of Fracture Toughness of X80 Pipeline Steels in DTB Transition Region Involving the Effect of Temperature and Crack Growth

Song

Cheng

et al. 2019

Metals

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This work presents an investigation of the effects of temperature and crack growth on cleavage fracture toughness for weld thermal simulated X80 pipeline steels in the ductile-to-brittle transition (DBT) regime. A great bulk of fracture toughness (crack tip opening displacement—CTOD) tests and numerical simulations are carried out by deep-cracked single-edge-notched bending (SENB) and shallow-cracked single-edge-notched tension (SENT) specimens at various temperatures (−90 °C, −60 °C, −30 °C, and 0 °C). Three-dimensional (3D) finite element (FE) models of tested specimens have been employed to obtain computational data. The results show that temperature exerts only a slight effect on the material hardening behavior, which indicates the crack tip constraint (as denoted by Q-parameter) is less dependent on the temperature. The measured CTOD-values give considerable scatter but confirm well-established trends of increasing toughness with increasing temperature and reducing constraint. Crack growth and 3D effect exhibited significant influences on CTOD-CMOD relations at higher temperatures, −30 °C and 0 °C for the SENT specimen.

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Section: Introductionmentioning

confidence: 99%

Modelling of Fracture Toughness of X80 Pipeline Steels in DTB Transition Region Involving the Effect of Temperature and Crack Growth

Song

Cheng

et al. 2019

Metals

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show abstract

COMMENTS to the Publication by V. P. Naumenko and I. V. Limanskii, “Fracture Resistance of Sheet Metals and Thin-Wall Structures. Part 1. Critical Review” (Strength of Materials, 2014, Vol. 46, No. 1, 18–37)

Krasovskii¹,

Оrynyak

2014

Strength Mater

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The authors made an attempt to subjectively evaluate modern approaches to structural strength analysis of cracked thin-walled structures, but in fact any structures whatever are not examined and only test results for some types of specimens are discussed [1].Ungrounded criticism of our several studies [2,3] impelled us to write this note. Thus, in p. 31 [1] the three assertions are imputed to us, however, we have nothing to do with them. For the reader's convenience, we would remind that the matter is practical risk evaluation for the fracture of structures based on the combined use of brittle and ductile fracture criteria within the so-called two-criterion approach. Considering certain difficulties in the access to the preprint [2] of 25 years' standing, we quote the definition cited there: "The diagram of fracture estimation is the method of interpolation of the two extreme cases of fracture (brittle and ductile) with the generalized equation

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Fracture Resistance of Sheet Metals and Thin-Wall Structures. Part 2. Research Objectives, Background, and Fundamental Novelties

Naumenko

Limanskii

2014

Strength Mater

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Fracture Resistance of Sheet Metals and Thin-Wall Structures. Part 1. Critical Review

Cited by 7 publications

References 47 publications

Modelling of Fracture Toughness of X80 Pipeline Steels in DTB Transition Region Involving the Effect of Temperature and Crack Growth

Modelling of Fracture Toughness of X80 Pipeline Steels in DTB Transition Region Involving the Effect of Temperature and Crack Growth

COMMENTS to the Publication by V. P. Naumenko and I. V. Limanskii, “Fracture Resistance of Sheet Metals and Thin-Wall Structures. Part 1. Critical Review” (Strength of Materials, 2014, Vol. 46, No. 1, 18–37)

Fracture Resistance of Sheet Metals and Thin-Wall Structures. Part 2. Research Objectives, Background, and Fundamental Novelties

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