Impact of Mass on Rolling Resistance Power Loss in Photovoltaic Electric Vehicles Under Sahelian Conditions | Chapter 1 | Current Approaches in Engineering Research and Technology Vol. 9

The vehicle under examination is an electric generator powered by a photovoltaic source. A proportion of the energy is employed to propel the vehicle, which has a maximum speed of 35.7 km/h and a mass of 300 kg, over a distance of 70 km. Another portion of the energy is captured and converted into electricity for domestic use. The vehicle is equipped with electric motors, with a rated power of 3,000 W and a voltage of 48 V, which are installed in the rear wheels for propulsion purposes. Some of the power is lost due to resistances such as air resistance, rolling resistance, and gradient. These resistances must be overcome during the journey, with rolling resistance accounting for the majority of the resistance. An initial experiment was conducted using an electric vehicle protocol to collect data, which enabled the collection of data on different speeds and the corresponding starting powers. The data were subsequently employed to ascertain the rolling resistance value through the utilisation of a resolution method that considers variables such as tyre inflation pressure, velocity, and vehicle mass. This method involves the calculation of a coefficient, designated the traction coefficient, which is a function of the local deformation of the tyre in response to wheel load. The power dissipated by rolling resistance can be determined from the data. Using MATLAB, the variations in power dissipated by rolling resistance can be visualised. The vehicle is driven on an asphalt concrete surface. This study demonstrates the behaviour of electric vehicles and enables the determination of their performance under driving conditions, taking into account rolling resistance, mass, and speed.

 

Author (s) Details

 

Sidy Mactar Sokhna
Laboratoire Eau, Energie, Environnement et Procédés Industriels (LE3PI), École Supérieure Polytechnique de Dakar, BP: 5085, Dakar-Fann, Sénégal.

 

Sory Diarra
Laboratoire Eau, Energie, Environnement et Procédés Industriels (LE3PI), École Supérieure Polytechnique de Dakar, BP: 5085, Dakar-Fann, Sénégal.

 

Mohamed El Amine Ait Ali
Université Mohammed V de Rabat, Ecole Mohammadia d’Ingénieurs, Équipe de Recherche Génie Mécanique et Énergétique: Modélisation et Expérimentation ERG2(ME) Av. Ibn Sina B.P. 765, Rabat, Morocco.

 

Souleye Faye
Laboratoire Eau, Energie, Environnement et Procédés Industriels (LE3PI), École Supérieure Polytechnique de Dakar, BP: 5085, Dakar-Fann, Sénégal.

 

Vincent Sambou
Laboratoire Eau, Energie, Environnement et Procédés Industriels (LE3PI), École Supérieure Polytechnique de Dakar, BP: 5085, Dakar-Fann, Sénégal.

 

Mohamed Agouzoul
Université Mohammed V de Rabat, Ecole Mohammadia d’Ingénieurs, Équipe de Recherche Génie Mécanique et Énergétique: Modélisation et Expérimentation ERG2(ME) Av. Ibn Sina B.P. 765, Rabat, Morocco.

 

Thierno Ass Abdoul LY
Solids Control at Schlumberger, Senegal.

 

Please see the book here:- https://doi.org/10.9734/bpi/caert/v9/1892

Effect of Friction on Electrochemical Reactions from a Thermodynamic Perspective | Chapter 4 | Recent Developments in Chemistry and Biochemistry Research Vol. 4

 The effect of friction on the charged solid-liquid interfaces has received more and more attention, especially in the fields of batteries, electrocatalysts and electric vehicles. It is generally considered that friction can interact with electrochemical reactions, causing a rapid failure of materials. In most cases, such as corrosion wear or stress corrosion, the presence of friction or external forces can accelerate electrochemical reactions. Meanwhile, the electrochemical reactions can also increase the wear rate. In other cases, an appropriate friction can inhibit the reaction processes, or even assist the electrochemical processes in achieving unique localized functions of material surfaces. However, the mechanism of the phenomena under electro-mechanical coupling effects has not been revealed yet. In this chapter, the effects of friction force on electrochemical processes are discussed from a thermodynamic perspective. Then, a tribo-electrochemical potential window is introduced by combining the traditional electrochemical potential window with friction/wear maps. The tribo-electrochemical oxides on the wear track of metal surface are characterized, which provides intuitive evidence for the effect of friction on electrochemical reactions. The results provide a better understanding of the solid-liquid interface processes under the electro-mechanical coupling effects in various fields, such as electrocatalysts and electric vehicles.

 

Author (s) Details

 

Chenxu Liu
State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China.

 

Yonggang Meng
State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China.

 

Please see the book here:- https://doi.org/10.9734/bpi/rdcbr/v4/629

Synthesis and Characterization of Al-18Si-3.6Cu-0.34Ce Alloy Prepared by Conventional Casting Method | Chapter 7 | Current Innovations in Chemical and Materials Sciences Vol. 4

 In the investigation, an exertion was made to find the machinelike and wear properties of a heat-treatable hypereutectic usually metallic-silicon alloy. The alloy was inclined by the unoriginal casting design in the form of ingots, then the synthetic compositions of the alloy were resolved by a spectro-spark emission spectrometer. The as-cast alloy test samples are T6 heat discussed by solutionizing at 500oC for 1 period, followed by water quenching and isothermal fading treatment at 210oC for various aging opportunities. The tensile test was completed activity for as-cast and cast-aged environments accompanying different crumbling times of 1h, 3h, 5h, and 7h. It was noticed from the tensile test that the final tensile strength of 1h (193.83 MPa) and 3h (168.68 MPa) old (T6 treated) samples revised the UTS by 22% and 7%, individually, as compared to the cast sample (158 MPa). For the preferred alloy at as-cast and cast-aged environments the dry sliding wear test was acted at distinct accelerating speeds (1 m/s, 2 m/s, 3 m/s, and 4 m/s) by varying loads of 10–40 N each gliding speed. From the wear study it is confirmed that wear rate and cooperative of friction are load-reliant. In spite of bigger sliding speeds and loads, lower resistance was noticed.

Author(s) Details:

Krishnaraddi Gangal,
Department of Mechanical Engineering, Rural Engineering College, Hulkoti-582205, India.

Devendra K.,
Department of Mechanical Engineering, SKSVMACET, Laxmeshwar, India.

Chandrashakar Kaggalagowdra,
Department of Mechanical Engineering, SKSVMACET, Laxmeshwar, India.

Please see the link here: https://stm.bookpi.org/CICMS-V4/article/view/12978

Tribological Evaluation of Turbostratic 2D Graphite as Oil Additive: A Recent Study| Chapter 1 | New Trends in Physical Science Research Vol.4

This research used powder technique to make Fe-SiC composites. SiC particles operate as precursors, causing a significant amount of turbostratic graphite to be distributed throughout the composite matrix. The temperature and composition range for stabilising the graphite phase in iron with a high yield were determined using Thermo-Calc® software. The recovered turbostratic 2D graphite particles were mixed in mineral oil to see if they might be used as a lubricating oil additive. The structure and morphology of the extracted graphite were studied using Raman spectroscopy and transmission electron microscopy (TEM), demonstrating the extremely disordered nature of turbostratic graphite. The friction coefficient and wear rate of a tribological pair were reduced when compared to pure mineral oil and mineral oil with commercial graphite particles added. There is limited contact between these atomic planes in turbostratic 2D graphite due to the misorientation and increase in interplanar distances, resulting in a low friction coefficient and decreased wear rate.

Author(s) Details:

Halley W. J. Dias,
Laboratorio de Materiais, Departamento de Engenharia Mecanica, Universidade Federal de Santa Catarina, Florianopolis, 88040-900, Brazil and Instituto Federal de Ciencia e Tecnologia de Santa Catarina/Campus Ararangua, Ararangua, 88905-112 , Brazil.

Alessandra B. Medeiros,
Laboratorio de Materiais, Departamento de Engenharia Mecanica, Universidade Federal de Santa Catarina, Florianopolis, 88040-900, Brazil.

Cristiano Binder,
Laboratorio de Materiais, Departamento de Engenharia Mecanica, Universidade Federal de Santa Catarina, Florianopolis, 88040-900, Brazil.

Joao B. Rodrigue Neto,
Laboratorio de Materiais, Departamento de Engenharia Mecanica, Universidade Federal de Santa Catarina, Florianopolis, 88040-900, Brazil.

Aloisio N. Klein,
Laboratorio de Materiais, Departamento de Engenharia Mecanica, Universidade Federal de Santa Catarina, Florianopolis, 88040-900, Brazil.

Jose Daniel B. de Mello,
Laboratorio de Materiais, Departamento de Engenharia Mecanica, Universidade Federal de Santa Catarina, Florianopolis, 88040-900, Brazil and Universidade Federal de Uberlandia, Laboratorio de Tribologia e Materiais, Uberlandia,38400-902, Brazil.

Please see the link here: https://stm.bookpi.org/NTPSR-V4/article/view/6926

Model of Fracture, Friction and Wear Processes of Heterogeneous Iron | Chapter 1 | Current Approaches in Science and Technology Research Vol. 1

 Pore volume, fracture character, contaminants, alloying, concentration inhomogeneity, friction conditions, and other factors all have an impact on the mechanical and tribotechnical properties of powdered materials. Pores also have an impact on the speed of diffusion processes and the reduction of undercooled austenite.anti-resistance To explore porous iron characteristics, ultrapure iron that has been annealed in hydrogen was employed. a powder Porosity has a nonmonotonic effect on toughness fracture and tribotechnical characteristics.Unlike all other known dependencies derived from technical iron powders. The results of research have been revealed. The fact that the average dimension of porous changes during the process of porosity reduction by pressing and annealing cycles. Models of friction, wear, and fracture of pure porous iron were produced based on the examination of porous structure.

Author (s) Details

Dr. A. A. Shatsov
Mechanical Technological Faculty, State National Research Politechnical University of Perm, 29 Komsomolskii Avenue, Perm 614990, Russia.

View Book :- https://stm.bookpi.org/CASTR-V1/article/view/1333

Polymer/steel Tribological Characteristics and Corrosion and Under External Voltages | Chapter 2 | Advanced Aspects of Engineering Research Vol. 11

 Metals are constantly in contact with their environment, whether it is air, vapour, water, or other chemicals, resulting in chemical interactions between metals and their respective environments, resulting in an insidious localised form of corrosion that causes much devastating destruction to structural members such as stainless steel in H2SO4 environments. The corrosion activity was studied using weight loss studies. The current study investigates the effects of three types of oil-dispersed polymers on the abrasive sliding wear of stainless steel: low-density polyethylene (LDPE), high-density polyethylene (HDPE), and polysulphide rubber (PSR). The external voltage enhances both the friction coefficient and the wear scar diameter, with PSR having a smaller scar diameter than both LDPE and HDPE. For all applied polymers, negative applied voltage has a smaller scar diameter than positive applied voltage. HDPE has the highest wear rate trends, followed by LDPE and PSR, in that order. The metallographic study revealed that when the H2SO4 solution interacts with the surface of the specimen, it causes pitting corrosion, weakens it, damages it, and changes its roughness over time.

Author (s) Details

S. A. Al-Ghamdi
Department of Electrical Engineering, Faculty of Engineering, Albaha University, Kingdom Saudi Arabia.

H. Abo-Dief
The Egyptian Petroleum Research Institute, Nasr City, Cairo, Egypt and The Chemistry Department, Faculty of Science, Al-Taif University, Kingdom of Saudi Arabia.

A. T. Mohamed
Mechanical Engineering Department, Albaha Faculty of Engineering, Albaha, Kingdom of Saudi Arabia.

View Book : https://stm.bookpi.org/AAER-V11/article/view/1242