1,272 Result(s)
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English
Civil Engineering
Mechanical Engineering
**mo Wang
Article
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Article
Open AccessStudy on the resistance coefficient of hot dry rock cuttings in Herschel-Bulkley fluid: experiments and modeling
Most hot dry rock geothermal wells are small angle directional wells, and rock cuttings easily accumulate at the bottom of the borehole to form a cuttings bed, causing accidents such as drill sticking, reducin...
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Crack growth behavior of U71MnG rail steel under overload conditions described using a dislocation correction model
The single-peak overload test based on DIC technology was carried out in this study, and U71MnG steel was used to explore the influence of dislocation motion on crack propagation during overload. The changes i...
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Preparation and properties of poly(ethylene glycol)-b-poly(3-acrylamidophenylboronic acid) glucose responsive particles and their hyaluronic acid-based microneedle patches
To overcome the pain and risk of hypoglycemia in insulin administration, glucose-responsive microneedles have been developed by researchers, which could release insulin according to the blood glucose level. We...
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Comparative analysis between single-train passing and double-train intersection in a tunnel
Aerodynamic pressure significantly impacts the scientific evaluation of tunnel service performance. The aerodynamic pressure of two trains running in a double-track tunnel is considerably more complicated than...
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Influence of cryogenic–vibration compound field on the residual stress and forming accuracy during aluminum alloy forming
Aluminum alloy parts are widely used in aerospace and other fields due to their light weight and good corrosion resistance. However, during the forming process, uneven deformation can lead to high residual str...
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Emerging applicability of two-dimensional boron for energy catalysis
Due to their unique physical and chemical properties, two-dimensional (2D) boron nanosheets have received tremendous research attention and demonstrated substantial value in electronic devices, biomedicine, an...
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Pore structure, mechanical property and permeability of concrete under sulfate attack exposed to freeze–thaw cycles
This study experimentally investigated the variations in pore structure, mechanical property and permeability of concrete under sulfate attack exposed to freeze–thaw cycles, and examined the relationship betwe...
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A close look at fire-induced explosive spalling of ultra-high performance concrete: from materials to structures
The advent of ultra-high performance concrete (UHPC) represents a significant leap in concrete technology. Yet, the material’s vulnerability to fire-induced explosive spalling, characterized by concrete fragme...
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Investigation on the resilient modulus of soil mixture at various water contents and coarse grain contents under train moving loads
Interlayer soil in railway substructures is characterized by a fine/coarse soil mixture. Considering that the resilient modulus Mr of the mixture is influenced by the microstructure of fine soil, it is worthwhile...
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Highly efficient modified phosphogypsum building gypsum powder and environmentally friendly utilisation in self-levelling mortar
The stockpiling of phosphogypsum is a waste of land resources and also causes serious pollution to natural resources such as water and atmosphere. This paper explores the mechanism of efficiently modified phos...
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Study on preparation and mechanical properties of a new type of high-temperature resistant ultra-high performance concrete
Ultra-high performance concrete (UHPC) tends to crack and flake at high temperature, which causes the structure to lose its overall stability and collapse, posing a serious threat to people’s lives and propert...
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A better understanding of tunnel deformable supports: from analytical model to engineering application
The severe failure of strong supports occurred in the **nhua tunnel that was a deep-buried tunnel excavated in squeezing ground. In order to address such problem, this study explores the possibility of applyin...
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Influence of stress wave incident angles on spalling failure in rock–mortar composites: experimental and simulation study
This paper aims to reveal the influence of stress wave incidents at different angles on surrounding rock and supporting mortar. The split Hopkinson pressure bar device with a diameter of 50 mm was used to carr...
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A phase field model for ductile fracture considering the strain rate, stress triaxiality and Lode angle parameter
Ductile materials exhibit rate-dependent behaviors when subjected to different loading rates, particularly during impact and explosion events. In order to investigate the high strain rate behaviors of metal ma...
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Study on the whole dynamical fracture process of sandstone samples
The single cleavage drilled compression specimens of sandstone were impacted by the large-diameter split Hopkinson pressure bar, during which the whole model-I dynamical fracture process was successfully obser...
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Open AccessCharacteristics of crack growth in brittle solids with the effects of material heterogeneity and multi-crack interaction
Despite the extensive research on crack propagation in brittle solids, numerous unexplored problems still necessitate in-depth study. In this work, we focus on numerical modeling of multi-crack growth, aiming ...
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Study of waterproof ability and corrosion resistance of basalt fiber-reinforced concrete with superhydrophobic surfaces
Basalt fiber-reinforced concrete (BFRC) is used extensively in bridge engineering. However, seawater can cause the cracking of BFRC bridge concrete and the corrosion of steel reinforcement inside the concrete....
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Open AccessPerformance analysis of deep learning-based object detection algorithms on COCO benchmark: a comparative study
This paper thoroughly explores the role of object detection in smart cities, specifically focusing on advancements in deep learning-based methods. Deep learning models gain popularity for their autonomous feat...
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Nonlinear aeroelastic analysis of temperature-dependent graphene platelet-reinforced composite lattice sandwich plates under general boundary conditions
In this study, the nonlinear aeroelastic properties of graphene platelet-reinforced composite (GPLRC) lattice sandwich plates under general boundary conditions in supersonic airflow is investigated for the fir...
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Optimization of porthole extrusion die for 6063 aluminum alloy profile with thin-walled multi-cavity complex section and analysis of profile performance
In the porthole extrusion of complex profiles, the die structure plays a significant role in the formability of the profile. In this study, numerical simulation was conducted to optimize the porthole extrusion...
