With the maturity of Internet Things, 5G communication, big data and artificial intelligence technologies, open-pit mine intelligent transportation systems based on unmanned vehicles has become a trend in smart construction. Traditional rely human power for command, which often causes vehicle delay congestion. The operation an open pit relies many sensors. Using from sensors, we optimize paths build efficient system. Based large amounts data, such as GPS equipment information, production...

Resource-based cities are those where resource-based industries comprise a large proportion of all industries. Sustainable development implies that make full use their own resources to support current initiatives and take sustainability into account both during after resource consumption. To promote investment in the sustainable provide decision system for these cities, this paper uses an ecological footprint model evaluate analyze per capita footprint, carrying capacity deficit...

The corrosion behaviour of lightweight aluminium/steel joints formed through resistance spot welding with multi-ring domed electrodes was investigated. A detailed examination the RSW joint between 6016 aluminium and DP780 galvanised steel conducted using electrochemical tests in a 3.5% NaCl solution spray acceleration tests. bonding process involved formation an interfacial Fe–Al intermetallic layer, oxide inclusions near nugget. Unlike microcracks Si-rich regions at aluminium-side interface...

To investigate the potential use of Red mud (RM) and desulfurization gypsum (DG) in dealing with roadbed filling, a series laboratory tests, such as compaction unconfined compressive strength (USC) water stability basic physical-chemical properties tests microscopic were conducted on abandoned silt (AS) from Foshan, Guangdong. The results indicates that cement-treated AS increase addition RM DG. UCS specimens 3% 2% DG increases by 23.33% than pure OPC after 60 days curing. Meanwhile,...

Abstract Interfacial intermetallic compound (IMC) layer is critical during realizing the galvanic corrosion mechanism and strength degradation of aluminium/steel resistance spot welding (RSW) joints. The effect IMC on behaviour RSW joint between 5182 aluminium alloy galvanized DP780 dual-phase steel was investigated by immersion method electrochemical method. Results demonstrated localized around Fe-rich phase particles nugget preferential at interface front near layer. had highest open...

Corrosion behavior is critical to the application of lightweight aluminum/steel joints using new resistance spot welding (RSW) technology. The study investigated corrosion mechanism and shear strength RSW comprising 1.2 mm 5182 aluminum 1.5 DP780 galvanized steel. Electrochemical tests were conducted on base materials various positions welds in a 3.5% NaCl solution. This result revealed that susceptibility interfacial intermetallic compound (IMC) layer was not accelerated by nugget because...

The traffic congestion situation is an important reference indicator for the orderly control and management of systems. As intelligent transport systems (ITS) become increasingly popular, challenge realizing real-time assessments (TCSAs) in post-traffic era particularly important. In this study, we propose a TCSA scheme multi-metric fuzzy integrated evaluation based on three predicted vehicle parameters 5G Internet Vehicles (5G-IoV) environment, which dedicated to accelerating development...

Massive landfilling of red mud (alumina residue, RM) has posed a great challenge to the sustainable development alumina industry. To consume such vast industrial wastes, it is benefits promote reuse RM in land reclamation replace partial traditional cementitious materials. This study investigates potential use stabilizing marine dredged clay (MDC) with low dosage cement, where sodium silicate used as an alkali-activator. A series laboratory tests are performed characterize positive role...

In this work, we in situ synthesized C-CuO composite by a facile solid phase grinding for efficient photo-thermal conversion. Moreover, surface morphology, hydrophilicity property, light absorption characteristic, and evaporation performance were investigated on membrane. It can be seen that was well dispersed the membrane, prompting harvesting intentionally encouraging water evaporation. The assisted valid flow membrane toward heat localization zone smooth steam escape. At calcination...

The effects of welding hold time on weld quality aluminium alloy to dual-phase steel resistance spot welds were studied. Results demonstrated that there existed an optimum range (350∼500 ms), within which the largest nugget diameter (7.6 mm), thinnest intermetallic compound (IMC) layer (1∼5 µm) and maximum tensile shear peak load (4.7 kN) obtained. Too short led shrinkage, small thick IMC due reduced heat dissipation after removing electrodes, thus resulting in low brittle fracture along...

As a distributed energy source, open-pit mine solar photothermal-photoelectric membrane distillation can convert into heat and electrical to provide power for water purification system. In sewage treatment, the system has advantages of high desalination rate, good quality low cost. However, this not been widely promoted applied because its consumption flux. Different operating parameters have greater impact on efficiency study, natural cooling film was built, response surface method used...

Abstract Grouting is an effective method to enhance the bearing capacity of in-service pile foundations. The effect optimizing grouting parameters for foundation reinforcement was verified through static load tests. field tests pileless stratum show that cement-sodium silicate slurry more favourable increasing pressure and convenient control diffusion than cement slurry. were determined according maximum quantity. 1.6g/cm3 sodium ratio 2.29:1. Moreover, range segmental localized detected by...

In the automotive, joining aluminum alloys and high-strength steel is crucial for vehicle lightweighting. Traditional welding methods struggle with joint embrittlement weld nugget morphology control in steel-aluminum connections, limiting their use automotive manufacturing. This study aims to optimize resistance spot of 5182 DP780 by novel electrodes parameters. A double helix raised electrode employed improve heat distribution. The effects current, pressure, time on properties are...

The fracture performance and damage prediction of die-cast materials are critical to guarantee the safe application structural components in lightweight vehicles. Monotonic loading experiments were conducted on different shapes aluminum alloy A356 specimens. Finite element simulation models monotonic established, stress state specimens during process was analyzed. Modified Mohr–Coulomb (MMC) failure model fitted by strain under states. Finally, established MMC verified a uniaxial compression...