Dr. Chunsheng Lu
Curtin University, Australia
Open Access
Article
Article ID: 282
by Kevin Kendall
Mechanical Engineering Advances, Vol.2, No.1, 2024; 272 Views, 196 PDF Downloads
This paper defines vehicles and buildings as main sources of United Kingdom (UK) carbon dioxide (CO 2 ) and seeks to cut such emissions using green hydrogen made from combined wind and solar energy. Combustion vehicles powered by fossil petroleum emit near half of UK climate-warming CO 2 while buildings heated by natural gas provide a third. First, current UK grid problems are defined: Electricity, gas and petroleum grids. Refueling green vehicles has been a particular problem. Then experiments on the private wire community of Keele University show how green hydrogen could integrate both green vehicles and buildings. Next, the model supply chain is planned and tested. Finally, experiments and calculations are outlined, analyzing the optimum system design criteria proposed. We conclude that economic green hydrogen can displace petroleum in vehicles, while powering buildings instead of natural gas. Also, the prospect in 2024 is that profits can be made all along the green hydrogen supply chain, such that new businesses involved in local private clean communities can cost less than the National Grid monopoly and other dominant fossil energy companies.
Open Access
Article
Article ID: 1140
by Zine Ghemari, Salah Belkhiri
Mechanical Engineering Advances, Vol.2, No.1, 2024; 149 Views, 112 PDF Downloads
Active Vibration Control (AVC) stands out as a prominent technique in the realm of vibration mitigation and structural dynamics. Unlike passive vibration control methods that rely on dampers or isolators, AVC systems actively manipulate forces or motions within a structure in real-time to counteract undesirable vibrations. In this paper, the main distinguishing characteristic of AVC lies in its proactive approach, wherein control algorithms and actuators are employed to actively sense and respond to dynamic changes in the system. The application of Newton’s second law allows a model of the vibration sensors operation, followed by simulations to improve their performance, which contributes to the advancement of the active vibration control system by enabling more precise detection and measurement of vibrations.
Open Access
Article
Article ID: 1214
by Branislav Gavrilovic, Vladimir Aleksandrovich Baboshin
Mechanical Engineering Advances, Vol.2, No.1, 2023; 1316 Views, 86 PDF Downloads
In the paper, the MATLAB-Simulink model of simulation of operation of the fast light innovative regional train from “Serbian Railways” in traction and braking mode is exposed where changes are observed: stator currents of three-phase traction motors, traction electric motor speeds and electric multiple units, electromagnetic torque on the rotor shaft of the traction electric motor, and direct current bus voltage. The model allowed review of the listed parameters for: different allowed values of contact network voltage and total voltage distortion at the place of connection of the electric multiple unit to the contact network; different mechanical loads of the electric multiple unit and traction electric motor; and different train speeds and rotations of traction electric motors. Appropriate conclusions were made through the analysis of the simulation results obtained.
Open Access
Article
Article ID: 1239
by Yujie Jia, Vanliem Nguyen
Mechanical Engineering Advances, Vol.2, No.1, 2024; 91 Views, 65 PDF Downloads
Excitation of the low frequency not only influences the driver’s health but also strongly affects the durability of the automobile’s structures. To research the automobile’s vibration in the low-frequency region, a dynamic model of the automobile is established to calculate the vibration equations of the automobile in the time region. Based on the theory of the Laplace transfer function, the automobile’s vibration equations in the time region are transformed and converted to the automobile’s vibration equations in the frequency region. Then, the effect of the automobile’s design parameters and operation parameters on the characteristic of the automobile’s acceleration-frequency is simulated and analyzed to evaluate the automobile’s comfort as well as the durability of the automobile’s structures in the frequency region. The research results show that the design parameters of stiffness, mass, and road wavelength remarkably affect the characteristic of the automobile’s acceleration frequency. To reduce the resonant amplitude of the acceleration frequency in the vertical and pitching directions of the automobile, the stiffness parameters of the automobiles and tires should be reduced while the mass of the automobile’s body should be increased. Additionally, the road’s roughness also needs to be decreased, or the road’s quality needs to be enhanced to reduce the resonant amplitude of the automobile’s acceleration frequency.
Open Access
Article
Article ID: 438
by Nestor Antonio Flores Martínez, Valentín Guzmán Ramos, Ricardo Chapa García
Mechanical Engineering Advances, Vol.2, No.1, 2024; 1274 Views, 77 PDF Downloads
Magnetic filters are used on companies for mass flux and volume flux values that help to cover day-to-day production. This work begins by describing the problem of magnetic filter fractures as of industrial interest. A brief description of how magnetic filters must work on applications according to requirements on the process line. On the next section, it is possible to find the explanation of structural fractures and mistakes on the design or data sheet, which are usually not considered in guaranteed policy. Are mentioned more than one math modeling, taking the simplest to show the effective value of maximum pressure tolerated on magnetic filters differs from estimated for controlled conditions. Solutions shown in the article are a first approach to a future general model theory that could explain how applied science works in a factory where there is no time to stop production. This work relates the math model and some values to application, meaning both the project hypothesis modeling and factories requirements for their equipment. Results depict volume, velocity, density, and pipeline relation to the pressure increase over the values on the data sheet from quality department tests. Conclusions describe the connection of the math model analysis with real situations on the application or possible structural damage. And its relationship with the proper function of magnetic filters for the purpose of lifespan analysis on future works. This work is a proof that in a few weeks, companies can have a solution for their problems, letting them buy some time to avoid any future issues.
Open Access
Article
Article ID: 326
by Olga Krutova, Vladimir Maizlish, Michael Bazanov, Viktor Chernikov, Alexey Volkov, Pavel Krutov
Mechanical Engineering Advances, Vol.2, No.1, 2024; 1394 Views, 136 PDF Downloads
We have obtained a nickel tetra-4-sulfophthalocyanine complex, soluble in water. The standard enthalpies of formation of a compound can be considered as the sum of the additive group contributions of fragments of these molecules. We assessed this value using a method based on group systematics with a Benson-type classification of fragments, taking into account the influence of the primary environment of the atoms. In order to obtain the value of the contribution of Ecompl(N)4-Ni, we used the bomb calorimetry method. The enthalpy of combustion of tetrakis (4-methoxyphenyl) porphine and its complex with nickel tetrakis (4-methoxyphenyl) porphine nickel were experimentally determined. Thermal effects of dissolution of crystalline nickel tetra-4-sulfophthalocyanine in aqueous solutions of various KOH concentrations (from 0.002 to 0.02 mol∙L −1 ) at 298.15 K were determined by the direct calorimetric method. The measurements were carried out in a calorimeter with an isothermal shell equipped with a reaction vessel with a volume of 60 cm 3 , electric calibration at T = (293.15–308.15) ± 0.01 K and P = 100.5 ± 0.7 kPa, and automatic temperature registration. The standard enthalpy of formation of dissociation products of the tetra-4-sulfophthalocyanine complex with nickel in an aqueous solution has been calculated.
Open Access
Article
Article ID: 526
by Mohammad Yaghoub Abdollahzadeh Jamalabadi
Mechanical Engineering Advances, Vol.2, No.1, 2024; 159 Views, 81 PDF Downloads
The knowledge of how the craquelures happen and their pattern on historical objects, especially paintings, is interested in the field of cultural heritage. Entropy generation and thermal analysis of crack growth are calculated numerically for the canvas painting. The painting is modeled as a three-layer composite with isotropic material properties. An in-house code is developed to model the plane strain elasto-static structural mechanics with hybrid-Trefftz finite element formulation. The results are benchmarked with numerical and analytical solutions. Entropy generation and temperature fields are simulated throughout stacking in mode I of a delamination process. The parameter study shows that the parameter of entropy has a great influence on the process of expectation of break proliferation in fast and low areas. It is likewise demonstrated that the use of the corruption entropy age hypothesis gives a technique for assessing the steady in the law of crack growth regarding the rate of entropy production.
Open Access
Review
Article ID: 111
by Samatha Kelathaya, Raghavendra Sagar
Mechanical Engineering Advances, Vol.2, No.1, 2024; 577 Views, 245 PDF Downloads
Usage of supercapacitors in energy storage applications has now become a new trend due to their auspicious features. The introduction of pseudocapacitance has increased its weightage to be used in a greater number of practical applications. Electrodes are the major constituents of a supercapacitor, based on which the electrochemical performance of the supercapacitor is decided. Among the varieties of electrode materials available, transition metal oxides are the most suitable ones to fulfill the required criteria. Due to the occurrence of faradic redox reactions on the surface of electrodes, the selection of efficient and favorable electrode material plays a major role. Co 3 O 4 (cobalt (III) oxide) is one of the most desirable electrode materials due to its various peculiar features. This paper reviews briefly several factors of Co 3 O 4 as electrode material in supercapacitor applications. It includes comparative discussions towards different synthesize methodologies and the influence of its dimensional morphology on the electrochemical outputs like specific capacitance, energy density, and power density.