Results 1 to 10 of about 2,476,755 (297)

A new mixed-mode phase-field model for crack propagation of brittle rock

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2023
Study on crack propagation process of brittle rock is of most significance for cracking-arrest design and cracking-network optimization in rock engineering.
Qiuhua Rao, Chenchen Zhao, Wei Yi
doaj   +1 more source

Fatigue growth rate of inclined surface cracks in aluminum and titanium alloys

open access: yesFracture and Structural Integrity, 2022
In this paper the fatigue crack growth tests were carried out on surface-crack tension (SCT) specimens, made of 7050 and Ti6Al4V alloys, with initial semi-elliptical surface cracks.
R.R. Yarullin, M.M. Yakovlev
doaj   +1 more source

Effect of loading mode and impact velocity on crack propagation of coal

open access: yesMeikuang Anquan, 2021
In order to study the influence of loading mode and impact velocity on coal crack propagation law, asymmetric semi-circular bend specimens were used to develop test and numerical simulation with multiple impact speeds under three loading modes of mode Ⅰ,
FAN Guowei, SUN Zhuang, SHANG Junning
doaj   +1 more source

Study on Mechanical Properties and Cracking Mode of Coal Samples under Compression–Shear Coupled Load Considering the Effect of Loading Rate

open access: yesApplied Sciences, 2020
Under coupled compression–shear loading, the failure and instability behavior of inclined pillars is different from that of horizontal pillars. To enhance the reliability and accuracy of pillar strength design, the influence of different inclination ...
Yanlong Chen   +5 more
doaj   +1 more source

Crack tip fields in elastic-plastic and mixed mode I+II+III conditions, finite elements simulations and modeling [PDF]

open access: yesFracture and Structural Integrity, 2015
This paper is devoted to the analysis of the load path effect on I+II+III mixed mode fatigue crack propagation in a 316L stainless steel. Experiments were conducted in mode I+II and in mode I+II+III.
F. Fremy   +3 more
doaj   +2 more sources

Investigation of Mixed-Mode I/II Fracture under Impact Loading Using Split-Hopkinson Pressure Bar

open access: yesApplied Sciences, 2020
Mixed-mode fracture of construction building materials under impact loading is quite common in civil engineering. The investigation of mixed-mode crack propagation behavior is an essential work for fundamental research and engineering application.
Fei Wang   +6 more
doaj   +1 more source

Propagation behavior of two collinear mode Ⅰ cracks driven by explosive gas

open access: yes矿业科学学报, 2023
In smooth pre-splitting blasting, two collinear cracks extending opposite to each other between adjacent holes will first avoid each other and then attract each other, resulting in crack propagation path that often presents hooked or butterfly-shaped ...
Yang Liyun   +3 more
doaj   +1 more source

Experimental and simulation study on Ⅰ-Ⅱ mixed-mode fatigue crack growth of TC4-DT welded joint

open access: yesJournal of Aeronautical Materials, 2020
The crack growth in the structure shows the complex Ⅰ-Ⅱ mixed-mode under the combined tensile and shear fatigue loading. It is of great significance to understand its growth law for evaluating the fatigue life of structures accurately.
LIU Xiaogang, ZHU Xiaolin, GUO Haiding
doaj   +1 more source

A New Method for Predicting the Crack Propagation Process of Brittle Rock Under Thermo-Hydro-Mechanical Loading Conditions

open access: yesIEEE Access, 2021
Prediction on the crack propagation process of brittle rock under Thermo-Hydro-Mechanical (THM) loading conditions is very important for crack-arrest design and disaster prevention in deep rock engineering.
Wei Yi   +3 more
doaj   +1 more source

Comparative study of the effects of different nanomaterials on the failure process of saturated concrete in an underground reservoir of a coal mine

open access: yesEnergy Exploration & Exploitation, 2022
The macroscopic failure of concrete used to form an artificial dam in an underground coal mine reservoir is the final manifestation of crack propagation and penetration: the mode of crack propagation is key to the safety evaluation of concrete structures.
Xianjie Hao   +5 more
doaj   +1 more source

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