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and fiber variables on the compressive property, a new artificial intelligence model was proposed by combining a newly invented meta-heuristics algorithm (salp swarm algorithm, SSA) and extreme... effect on the UCS of fiber-reinforced CPB. Key words: fiber-reinforced cemented paste backfill; unconfined compressive strength; prediction; extreme learning machine; salp swarm algorithm 1 Introduction......
,有必要对模具结构进行优化设计. 图5 挤压出模口型材横截面上沿挤压方向的速度分布 Fig. 5 Velocity distribution along extrusion direction on cross-section of profile at die exit 图6 焊合室内焊合压力分布 Fig. 6 Welding pressure... on profile cross-section 图14 焊合室焊合压力分布 Fig. 14 Welding pressure distribution in welding chamber 表5 焊合室的焊合压力,有效应力和挤压力对比 Table 5 Comparisons of mean welding pressure, flow stress......
is the influence coefficient of grain boundary on strength, which is a constant. It is worth noting that the effect of the cell boundary on the material is similar to that of the grain boundary......
of reinforcing particles. In this respect, the use of metal matrix composites (MMCs) reinforced with nano/micro- sized particles of low mass, good resistance to corrosion and wear, and excellent... ductile composite is used. At the same time, the addition of TiC particles resulted in a better microhardness, which made it suitable in applications that need a high wear resistance. Although several......
under a combination of internal pressure and axial load (monotonic or alternating). HOSSEINI et al [2] evaluated an energy absorption capacity of the Al5083 thin-walled tube and also studied... and corrosion shape on the performance of corroded thin-wall steel pipes under the combined action of internal pressure and four- point bending load. ZHAO et al [4] proposed a more direct assessment......
is distributed in the range of 10 m from the face; after the introduction of the long pressure and short suction ventilation scheme, when the ratio of compressed air volume to exhaust air volume is 0.72, the height of the pressure fan is 2.5 m, the distance between the pressure fan and the palm face is 20 m, and the exhaust fan is 12 m away from the palm, the dust concentration control efficiency......
environment was affected. The adsorption of cations on the soil particle surface has the greatest influence and plays a decisive role. RASCIO et al [19] used pressure-volume method and the isothermal adsorption..., and select 10000 times of electron microscope pictures for storaging. After the test, turn off the high pressure, unload the vacuum and take out the sample. The microstructure images of each soil sample......
Abstract: The microstructure characteristics in early stage shear localization of near-α Ti-6Al-2Zr-1Mo-1V titanium alloy were investigated by split Hopkinson pressure bar (SHPB) tests using hat-shaped... pressure bar; hat-shaped specimen; sandwich structure 1 Introduction The phenomenon of shear localization in high strain rate deformation has attracted significant attention for the impact experiencing......
(Smart Lab 9kw) was used to analyze the mineral composition before and after the modification of the adsorbent material. The emitter material was a Cu target, and the tube pressure was 40 kV, the tube... of diffusion is random; the concentration of adsorbed substance does not change with the particle position; and the internal diffusion coefficient is constant [49]. Under the condition of T=298 K and pH=5......
absorption spectrophotometer. The main settings of this test are as follows. The combustion gas is acetylene with an output pressure of 0.08-0.1 MPa, while oxygen is the auxiliary gas. The wavelength of Ca.... The total injection volume of the sample is 1350 μL; the injection rate is 4 mL/min; the pump flow is 1.0 mL/min; and the pump pressure is limited within 200–3000 Psi. The temperature of the experimental......
