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Rock crack initiation triggered by energy digestion. [PDF]
Sci RepAbstract The critical value of rock failure is determined by irreversible deformation (inelastic deformation, damage, and other internal dissipation) processes and external conditions before rock failure. Nevertheless, a thorough explanation of the mechanism causing cracks in rock material has not yet been provided.
Yan L +5 more
europepmc +4 more sources
Crack Initiation in Viscoelastic Materials [PDF]
Physical Review Letters, 2018 In viscoelastic materials, individually short-lived bonds collectively result in a mechanical resistance which is long-lived but finite, as ultimately cracks appear. Here we provide a microscopic mechanism by which cracks emerge from the nonlinear local bond dynamics.
Yuval Mulla +3 more
openaire +3 more sources
Crack Initiation in Brittle Materials [PDF]
Archive for Rational Mechanics and Analysis, 2007 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Antonin Chambolle +2 more
openaire +5 more sources
Railway Engineering Science, 2023 The prediction of wheel/rail rolling contact fatigue (RCF) crack initiation during railway operations is an important task. Since RCF crack evolution is influenced by many factors, its prediction process is complex.
Shuyue Zhang +6 more
doaj +1 more source
Initiation of Cracks in Dental Amalgam [PDF]
Journal of Dental Research, 1975 The force required to initiate cracks in dental amalgam beams was measured and related to the microstructure. The force measured was dependent on age and on the distribution of phases on the tension side of the beam. The Ag-Cu phase is most resistant to failure in Dispersalloy and an experimental alloy.
Younis, Osama +2 more
openaire +3 more sources
Agriculture, 2023 Clarifying the dissipated energy required for crack expansion is an effective way to control material crushing. Therefore, based on the material fracture probability model and fractal theory, the energy range required for crack extension was determined ...
Xiaolan Man +6 more
doaj +1 more source
Crack path in aeronautical titanium alloy under ultrasonic torsion loading [PDF]
Fracture and Structural Integrity, 2016 This paper discusses features of fatigue crack initiation and growth in aeronautical VT3-1 titanium alloy under pure torsion loading in gigacycle regime. Two materials: extruded and forged VT3-1 titanium alloys were studied.
A. Nikitin +3 more
doaj +1 more source
Aerospace, 2022 Radial cracks appear in the labyrinth seal fins of the shrouded turbine blade of an aero-engine during service. To clarify the influence rule of rubbing force on crack initiation, a high-speed rubbing test bench and a numerical calculation model are ...
Yicheng Yang +3 more
doaj +1 more source
Advances in Civil Engineering, 2020 Crack initiation is an important stage in the failure process of rock masses. In this paper, crack initiation behaviors (crack initiation model, crack initiation location, crack initiation angle, and crack initiation stress) of granite specimens ...
Haiyang Pan +3 more
doaj +1 more source
Study on dynamic crack initiation and propagation behavior of surrounding rock of adjacent roadway
矿业科学学报, 2021 In order to study the mechanical behavior characteristics of dynamic crack initiation and propagation of surrounding rock of adjacent roadway under impact load, with the help of a new digital laser dynamic caustics experimental system, a rock-like medium
Yang Liyun +5 more
doaj +1 more source