Results 11 to 20 of about 1,354,072 (296)

Crack path in aeronautical titanium alloy under ultrasonic torsion loading [PDF]

open access: yesFracture 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

Study on the Relationship between Crack Initiation and Crack Bifurcation in Walnut Shells Based on Energy

open access: yesAgriculture, 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

Anisotropy of crack initiation strength and damage strength of coal reservoirs

open access: yes, 2021
The crack volume strain method and acoustic emission (AE) method are used to analyze the anisotropy of the crack initiation strength, damage strength, the failure mode and the AE characteristics of coal reservoir.
X. Hao   +8 more
semanticscholar   +1 more source

Experimental and Numerical Study on the Influence of Rubbing Force on Radial Crack Initiation in Labyrinth Seal Fins

open access: yesAerospace, 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

Study on dynamic crack initiation and propagation behavior of surrounding rock of adjacent roadway

open access: yes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

Crack Initiation Behaviors of Granite Specimens Containing Crossing-Double-Flaws with Different Lengths under Uniaxial Loading

open access: yesAdvances 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

Crack Growth Behavior through Wall Pipes under Impact Load and Hygrothremal Environment

open access: yesAl-Khawarizmi Engineering Journal, 2018
This research concerns study the crack growth in the wall of pipes made of low carbon steel under the impact load and using the effect of hygrothermal (rate of moisture 50% and 50℃ temperature).
Ali Jamal Khaled, Ahmed Abdul Hussain
doaj   +1 more source

Fracture propagation mechanism of coalbed methane drainage hole after prefabricated water jet slot fracturing based on J-integral model

open access: yesEnergy Reports, 2022
Aiming at the method of mining coalbed methane by fracturing with guide groove, the theoretical analysis and numerical simulation method are used to analyze the change law of coal mechanical properties and the crack propagation mechanism after the jet ...
Liangwei Li
doaj   +1 more source

Risk Estimation for LCF Crack Initiation [PDF]

open access: yesVolume 7A: Structures and Dynamics, 2013
An accurate risk assessment for fatigue damage is of vital importance for the design and service of today’s turbomachinery components. We present an approach for quantifying the probability of crack initiation due to surface driven low-cycle fatigue (LCF).
Schmitz, Sebastian   +3 more
openaire   +2 more sources

Initiation of Cracks in Dental Amalgam [PDF]

open access: yesJournal 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

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