Results 41 to 50 of about 159,718 (166)

Investigation of mixed mode-I/II fracture problems - Part 2: evaluation and development of mixed mode-I/II fracture criteria

open access: yesFracture and Structural Integrity, 2015
In this study, experimental and numerical results of compact tension shear (CTS) specimen and a new specimen type under in-plane mixed mode (Mode-I/II) loading conditions are compared with existing inplane mixed mode fracture criteria to investigate and ...
A. O. Ayhan, O. Demir
doaj  

Criteria of Ductile Fracture Strain

open access: yesBulletin of JSME, 1972
Two criteria of ductile fracture strain are suggested. From the theory of plasticity for porous materials, the following criterion of fracture for a triaxial state of stress is obtained: [numerical formula] where ee_qf is the equivalent fracture strain, σm the mean stress, σe_q the equivalent stress, a0 and b0 are constants.
openaire   +2 more sources

Criteria for well and layer selection for fracturing–flooding practice in offshore low-permeability reservoirs based on numerical simulation

open access: yesFrontiers in Earth Science
The success in the pilot testing of offshore fracture–flooding provides a new technical idea for the development of low-permeability and under injection oilfields.
Mingguang Tang   +10 more
doaj   +1 more source

Characterization of uncoupled ductile fracture criteria for 0Cr17Ni4Cu4Nb stainless steel under different stress states

open access: yesJournal of Materials Research and Technology
Ductile fracture behavior of 0Cr17Ni4Cu4Nb stainless steel was evaluated under six distinct stress states (Flat shear, Flat with a circular hole, Smooth round bar, Flat notched tension, Notched round bar R3.0, Notched round bar R1.5) using eight widely ...
Xiang Cheng   +7 more
doaj   +1 more source

Evaluation of Varying Ductile Fracture Criteria for 42CrMo Steel by Compressions at Different Temperatures and Strain Rates

open access: yesThe Scientific World Journal, 2014
Fracturing by ductile damage occurs quite naturally in metal forming processes, and ductile fracture of strain-softening alloy, here 42CrMo steel, cannot be evaluated through simple procedures such as tension testing.
Guo-zheng Quan   +4 more
doaj   +1 more source

Randomized controlled trials investigating proximal humerus fractures lack consensus in inclusion criteria

open access: yesJSES Reviews, Reports, and Techniques
Background: This study aimed to investigate inclusion and exclusion criteria for subjects of randomized control trials (RCTs) studying operative management of proximal humerus fractures (PHFs) and to define the presence or absence of objectivity and ...
Cailan L. Feingold, BS   +8 more
doaj   +1 more source

3D printing and acute maxillofacial trauma: an overview of the literature

open access: yes3D Printing in Medicine
Background The consequences of maxillofacial injuries are functionals and aesthetics. The initial treatment must lead to consolidation without any sequelae (complete healing with no clinical symptoms).
E Bertin   +4 more
doaj   +1 more source

A modified 3D mean strain energy density criterion for predicting shale mixed-mode I/III fracture toughness

open access: yesJournal of Rock Mechanics and Geotechnical Engineering
The fracture toughness of rocks is a critical fracturing parameter in geo-energy exploitation playing a significant role in fracture mechanics and hydraulic fracturing.
Kun Zheng   +4 more
doaj   +1 more source

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