Abdlmanam S. A. Elmaryami

• Doctor of Engineering
• Managing Director at Bright Star University

Corrosion is an unavoidable fact in everyday life but always receive attention to control due to its technical, economical, and esthetical importance. Carbon steel (CS) is the most commonly used material for equipment and pipes in the oil production processes. However, presence of water/salts and carbon dioxide, among other gases, in the oil is a s...

In recent years, the energy production by wind turbines has been increasing, because its production is environmentally friendly; therefore, the technology developed for the production of energy through wind turbines brings great challenges in the investigation. The use of wind energy worldwide has overgrown in recent years to reduce greenhouse gas...

Highlights  The present study presents a general mathematical model of a photoelectric collector.  The Simulink software was used to simulate the mathematical model of the solar cell.  Results, which could be used for a variety of solar photovoltaic investigations, were quite accurate, with a maximum error of less than 1%. This research presents...

Numerous research works have examined the efficiency of both single-and double-pass solar air heaters. These investigations cover the pressure drop in ducts, flow phenomena, heat transfer enhancement, and solar air heater design. Recycled aluminum cans are used as the absorbing material in this project's experimental work, which is based on an ener...

In the past, those working in the industry believed maintenance was a secondary function. Therefore it was carried out only in ways Primitive and dominated by the traditional nature, which is “breakdown repair” or what is called corrective maintenance. Then the management of the industrial facility in question will pay many times the amount of mone...

A Novel 2-D mathematical modeling to determine LHP to ... ZASTITA MATERIJALA 64 (2023) broj 3 ABSTRACT 2-dimensional mathematical model of axisymmetric transient industrial quenched low carbon steel bar, to examine the influence of process history on metallurgical and material characteristics, a water-cooled model based on the finite element techni...

The modeling of an axisymmetric industrial quenched alloy steel SCM440 based on the finite element method (FEM) has been produced to investigate the impact of process history on material properties and metallurgical. Mathematical modeling of the 1-Dimensional element axisymmetric model has been adopted to determine the temperature history and conse...

Simulation of hardness distribution in quenched specimens has been investigated using three-dimensional finite-element (FE) analyses which reduced into a 2-dimensional axisymmetric analysis based on Ansys Software capable of predicting temperature history; evolution hardness of four different types of Molybdenum steel bars during thermal processing...

A preliminary investigation of some factors which can affect the reflected light intensity from granular and icing sugar has been carried out using an end viewing hemispherical tip probe. It is found that the reflectance is strongly dependent on the size range of the sugar particles, with the finer particles being more reflective. This property cou...

E-LHP Software] ‫بشكل.‬ ‫الموضح‬ 1 ‫تارٌخ‬ ‫على‬ ‫للحصول‬ , ‫الحرارة‬ ‫درجة‬ (Temperature history) ‫التبرٌد‬ ‫زمن‬ ‫على‬ ‫الحصول‬ ‫ومنه‬ (Cooling time) ‫تم‬ ‫حٌث‬ ‫نمطة,‬ ‫أي‬ ‫عند‬ ‫الصالدة‬ ‫وأخٌرا‬ ‫جومٌنً‬ ‫مسافة‬ ‫اٌجاد‬ ‫و‬ ‫التبرٌد‬ ‫معدل‬ ‫ثم‬ ‫ومن‬ ‫عن‬ ‫صالدة)‬ ‫نمطة‬ ‫(ألل‬ ‫المركز‬ ‫الى‬ ‫صالدة)‬ ‫(أعلى‬ ‫السطح‬ ‫من‬ ‫نماط‬ ‫خمس‬ ‫اختٌا...

Quenching of steels in general has been and continues to be an important commercial manufacturing process for steel components. Temperature histories must be performed in order to obtain accurate transformation kinetics. The modelling of an axisymmetric industrial quenched steel bar based on finite element method has been produced to investigate th...

The modelling of an axisymmetric industrial quenched carbon steel-1045 based on the finite element method has been produced to investigate the impact of process history on metallurgical and material properties. Mathematical modelling of 1-Dimensional line (radius) element axisymmetric model has been adopted to predict temperature history and conseq...

Water is the most important part of human day-today life and natural limited resource. The micro-hydro power plant is both an efficient and reliable form of a clean source of renewable energy and also being clean as well as environment-friendly, easy to be operated and low operation cost. Could Run of Libyan's man-made river hydroelectricity model...

A preliminary investigation of some factors which can affect the reflected light intensity from granular and icing sugar has been carried out using an end viewing hemispherical tip probe. It is found that the reflectance is strongly dependent on the size range of the sugar particles, with the finer particles being more reflective. This property cou...

In the steam boiler industrial sector, pressure and temperature of the water tube are the two main factors that affect the safety and efficiency of a steam boiler. Explosions may be occurring because of a sudden drop in pressure without a corresponding drop in temperature. Therefore, understanding the temperature distribution of the water tube boil...

In this study, the flow rate, velocity, head, and power in a designed and manufactured centrifugal water pump were studied and determined experimentally. The effect of the impeller with different blades on the centrifugal pump performance has been investigated. Three different impellers with 4, 5, and 6 blades are tested to determine the number of...

The effect of thermal cycling was carried out on steel bars (0.4 C %). A single run was performed at a lower temperature of 32℃ and an upper temperature of 500℃ cooled in water, seawater (previous results) and oil (new results). For several numbers of cycles up to 30 cycles for an accurate determination of heating and cooling times. The effect of t...

The Rankine cycle is one example of vapor power cycles. One important application of it is in steam power plants. In this paper, a simple model of the steam power plant is designed to study the effect of increasing boiler's pressures (3, 4, 5, and 6 bar respectively) on the efficiency and the dryness friction of the Model. Properties of the importa...

In this study, the flow rate, velocity, head, the mass flow rate and the power in a designed and manufactured a solar water pump model (SWPM) were studied and determined experimentally in the Lab at the Bright Star University. The effect of impeller with different blades on the (SWPM) performance has been investigated. Three different impellers wit...

The effect of thermal cycling was carried out on steel bars (0.4 %C). A single run was performed at a lower temperature of 320C and an upper temperature of 5000C cooled in water and seawater. For several numbers of cycles up to 30 cycles for an accurate determination of heating and cooling times. The effect of thermal cycling on the corrosion rate...

The modelling of an axisymmetric industrial quenched chromium steel bar AISI-SAE 5147H, sea water cooled based on finite element method has been produced to investigate the impact of process history on metallurgical and material properties. Mathematical modelling of 1-Dimensional line (radius) element axisymmetric model has been adopted to predict...

Thermal cycling tests were carried out on carbon steel (0.4 C%). A single run was performed at upper temperature of 500 o C and lower temperature of 32 o C cooled in sea water. For several numbers of cycles up to 30 cycles for an accurate determination of heating and cooling times. The effect of thermal cycling on corrosion rate were evaluated. The...

In steam boiler industrial sector, pressure and temperature of the water tube are the two main factors that affecting the safety and efficiency of a steam boiler. Explosions may be occurring because of a sudden drop in pressure without a corresponding drop in temperature. Therefore, understanding the temperature distribution of the water tube boile...

One-dimensional (1D) model of an axisymmetric industrial quenched carbon steel-1045 bar based on finite element method (FEM) has been applied to investigate the influence of process history on its material properties. The lowest hardness point (LHP) and the effect of the radius of the bar on its temperature history and the LHP is determined. In thi...

A One-dimensional (ID) model of any axisymmetric industrial quenched steel bar based on the finite element method (FEM) has been applied to investigate the influence of process history on its material properties of seventy-five (75) cases on ten (1 0) different samples of steel. The lowest hardness point (LHP) and the effect of the radius of any st...

Mathematical modeling of the process of quenching of axisymmetric industrially quenched steel bars is performed with the use of the finite-element method. The model is checked by comparing the results of the temperature simulation with data of simulation by the ANSYS commercial finite-element software.

Mathematical modeling of an axisymmetric transient industrial quenched chromium steel bar AISI-SAE 5147H, water cooled based on finite element method has been produced to investigate the impact of process history on metallurgical and material properties. Mathematical modelling of 1-D line (radius) element axisymmetric model has been adopted to pred...

One-dimensional (1D) model of an axisymmetric unsteady state industrial quenched boron steel 50B46H bar based on finite element method (FEM) has been applied to investigate the influence of process history on its material properties. The effect of four different radii on its temperature history is determined. The model can be employed as a guidelin...

Bronze Award

Mathematical modelling of axisymmetric transient industrial quenched chromium steel bar AISI-SAE 8650H, water cooled based on finite element method has been produced to investigate the impact of process history on metallurgical and material properties. Mathematical modelling of 1-D line (radius) element axisymmetric model has been adopted to predic...

Quenching of steels in general has been and continues to be an important commercial manufacturing process for steel components. Temperature histories must be performed in order to obtain accurate transformation kinetics. The modelling of an axisymmetric industrial quenched steel bar based on finite element method has been produced to investigate th...

Title of invention: “A Novel (1-D) Mathematical Modelling Simulation of LHP in Quenched Steel Bar“

Book Abstract: Heat transfer calculations in different aspects of engineering applications are essential to aid the engineering design of heat-exchanging equipment. Minimizing computational time is a challenging task faced by researchers and users. Methodology of calculations in some application areas is incorporated in this book, such as differen...

Abdlmanam S. A. Elmaryami and Badrul bin Omar., Title of the invention: “A Novel (1-D) Mathematical Modelling Simulation of LHP in Quenched Steel Bar“. 23rd International Invention, Innovation & Technology Exhibition (ITEX 2012), 17–19 May 2012, Kuala Lumpur Convention Centre, Malaysia – Bronze Award.

The modeling of an axisymmetric industrial-quenched low-carbon steel bar based on the finite-element method has been produced to investigate the impact of process history on metallurgical and material properties. Mathematical modeling of a one-dimensional line (radius) element axisymmetric model has been adopted to predict temperature history and,...

The modelling of an axisymmetric industrial quenched chromium steel bar AISI-SAE 8650H based on finite element method has been produced to investigate the impact of process history on metallurgical and material properties. Mathematical modelling of 1-dimensional line (radius) element axisymmetric model has been adopted to predict temperature histor...

Quenching of steels in general has been and continues to be an important commercial manufacturing process for steel components. Temperature histories must be performed to obtain more accurate transformation kinetics; an adequate tool has been produced for investigating the impact of process history on metallurgy and material properties. Modelling o...

Quenching of steels in general has been and continues to be an important commercial manufacturing process for steel components. Temperature histories must be performed in order to obtain accurate transformation kinetics. The modelling of an axisymmetric industrial quenched steel bar based on finite element method has been produced to investigate th...

Thermal cycling tests were carried out on carbon steel up to 1.05 C%. A single run was performed at an upper temperature of 500C 0 and a lower temperature of 30C 0 in different media (water, seawater, and oil). For several number of cycles up to 30 processes for an accurate determination of heating and cooling times. The effect of thermal cycling o...

Heat transfer is very important in steel industries because heating is an economical way to alter a steel component's properties to suit the end user's requirement. Heating interrupted by quenching is a well-known procedure to treat steel components. Much work had been done on changing the mechanical properties of the steel component and little on...

Our manuscript studied "Unsteady State Hardness Prediction of Industrial Quenched Steel Bar [One and Two Dimensional]". In this Manuscript we will apply the Finite Element Method (FEM), which is used almost universally to solve engineering problems. The basic step in finite element method and theory will be discussed. Besides that unsteady-state he...

Thermal cycling tests were carried out on carbon steel up to 1.05 C%. A single run was performed at upper temperature of 500C° and lower temperature of 30C° in different media (water, sea water, and oil). For several numbers of cycles up to 30 cycles for an accurate determination of heating and cooling times. The effect of thermal cycling on the ha...

The modelling of an axisymmetric industrial quenched molybdenum steel bar AISI-SAE 4037H quenched in sea water based on finite element method has been produced to investigate the impact of process history on metallurgical and material properties. Mathematical modelling of 1-dimensional line (radius) element axisymmetric model has been adopted to pr...