154 Result(s)
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Article
Recent progress of fiber-shaped batteries towards wearable application
Rapid development of portable or wearable devices, which is inspired by requirements of instant messaging, health monitoring and handling official business, urgently demands more tiny, flexible and light power...
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Effects of submicron-MgO and nano-MgO on the expansion and microscopic properties of high-performance concrete
MgO-series expansive agents can effectively compensate for the shrinkage and deformation of concrete structures. However, few experimental studies have been conducted on MgO expansive agents, particularly conc...
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Article
Effect of pulsed electromagnetic frequency on the microstructure, wear and solid erosion resistance of CrAlN coatings deposited by arc ion plating
In this work, the chromium aluminum nitride (CrAlN) coatings were prepared on TC11 titanium alloy by composite magnetic field cathodic arc ion plating with controllable pulse electromagnetic combined with perm...
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Influence of mortar gap on natural vibration frequencies of high-speed railway track-bridge system
Based on Hamilton’s principle, the differential equations of free vibration of track-bridge systems with mortar gap are derived. Hence, a method for calculating the natural frequencies of track-bridge systems ...
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Article
Scour effect on a sea-crossing bridge under combined action of service and extreme seismic loads
Foundation scour is an important cause for structural failure of sea-crossing bridges. Usually, the sea-crossing bridges operate under the harsh natural environment in which service wind, wave and vehicle load...
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Pd-M-TiO2 (M=Mn, Cu, Ce and Fe) as passive NOx adsorber (PNA) at low temperature
A series of transition metal Mn, Cu, Ce and Fe were loaded on TiO2 by sol-gel method with noble metal Pd as promotor for the application of passive NOx absorber. Experiments on adsorption and desorption of NOx we...
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Article
Soot particle distributions inside a diesel particulate filter during soot loading in plateau environment
A three-dimensional diesel particulate filter (DPF) simulation model was developed by using AVL software FIRE to study the effects of four factors on soot particle distributions along the axial and radial dire...
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Factors influencing accuracy of free swelling ratio of expansive soil
Many geotechnical structures, such as the subgrade of high-speed railway, are extremely sensitive to micro deformations. As one of the most commonly used indexes in China to evaluate the potential swelling lev...
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Article
Model tests on uplift capacity of double-belled pile influenced by distance between bells
To optimize the distance between the bells in pile design, this paper reports a series of small scale tests on the uplift capacity of double belled piles embedded in dry dense sand considering different bell s...
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Evaluation of time-dependent rheological properties of cemented paste backfill incorporating superplasticizer with special focus on thixotropy and static yield stress
Superplasticizers are widely used to reduce the pipe flow resistance of cemented paste backfill (CPB), which is characterised by high concentration and high yield stress. This study aimed to assess the time-de...
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Experimental investigation on mechanical behaviors of granites after high-temperature exposure
To investigate the influence of temperature on the physical, mechanical and acoustic emission characteristics of granites, uniaxial compression test, variable-angle shear test, acoustic emission signal monitor...
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Article
Viscoelastic behavior with damage evolution of a new smart geosynthetic in service temperature range
A new type of intelligent geosynthetic product, sensor-enabled geobelt (SEGB), is developed to improve the health monitoring of geotechnical structures. It can be used as a strain monitoring sensor owing to it...
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Optical and electrical properties of room temperature prepared α-IGZO thin films using an In2Ga2ZnO7 ceramic target
In this study, a high-purity In2Ga2ZnO7 ceramic target was used to deposit indium gallium zinc oxide (IGZO) films by RF magnetron sputtering technology. The microstructure, growth state, optical and electrical pr...
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Article
Elastoplastic analysis of solid structures using penalty-based couple stress finite element method within framework of Cosserat continuum
To obviate the complexities of the straight forward couple stress finite element method, the penalty-based couple stress finite element method (named PcouFEM) within the framework of the Cosserat continuum is ...
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Article
Creep aging behavior and performance of Al-Zn-Mg-Cu alloys under different parameters in retrogression aging treatment
A study was conducted to better understand how different parameters, namely, regression aging time and regression aging temperature, affect the creep aging properties, i.e., the creep deformation and performan...
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Determination of ultimate bearing capacity of uplift piles using intact and non-intact load-displacement curve
Based on the field destructive test of six rock-socketed piles with shallow overburden, three prediction models are used to quantitatively analyze and predict the intact load-displacement curve. The predicted ...
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Article
Mechanical properties and microstructure evolution of an Al-Cu-Li alloy subjected to rolling and aging
The mechanical properties and microstructure of Al-Cu-Li alloy sheets subjected to cryorolling (−100 °C, −190 °C) or hot rolling (400 °C) and subsequent aging at 160 °C for different times were investigated. T...
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Assessment on strength reduction schemes for geotechnical stability analysis involving the Drucker-Prager criterion
For geotechnical stability analysis involving the Drucker-Prager (DP) criterion, both the c-φ reduction scheme and the M-K reduction scheme can be utilized. With the aid of the second-order cone programming optim...
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Article
Formation of X-shaped hydraulic fractures in deep thick glutenite reservoirs: A case study in Bohai Bay Basin, East China
Tight glutenite reservoirs are widely developed in Bohai Bay Basin, East China. They are mostly huge thick and rely on hydraulic fracturing treatment for commercial exploitation. To investigate the propagation...
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Article
Recovery of zinc from electric arc furnace dust by alkaline pressure leaching using iron as a reductant
To recover zinc from electric arc furnace (EAF) dust, a process of primary normal pressure leaching and secondary alkaline pressure leaching is proposed. First, under the alkaline pressure leaching system, the...
