Introduction of Mechanical Engineering

  • What is Mechanical Engineering?
:- Mechanical engineering is a branch of engineering that applies the principles of Mechanics and Materials science for analysis, design, manufacturing   and maintenance of mechanical system. It involves the production and usage of heat and mechanical power for the design, design, production, and operations of machines and tools.
  It creates and develop mechanical systems for all of humankind Concern with principles of force, energy and motion.

Mechanical engineering is the discipline that applies engineering physics, engineering mathematics, and materials science principles to design, analyze, manufacture, and maintain mechanical systems. It is one of the oldest and broadest of the engineering disciplines.

The mechanical engineering field requires an understanding of core areas including mechanics, dynamics, thermodynamics, materials science, structural analysis, and electricity. In addition to these core principles, mechanical engineers use tools such as computer-aided design (CAD), computer-aided manufacturing (CAM), and product life cycle management to design and analyze manufacturing plants, industrial equipment and machinery, heating and cooling systems, transport systems, aircraft, watercraft, robotics, medical devices, weapons, and others. It is the branch of engineering that involves the design, production, and operation of machinery.

Mechanical engineering emerged as a field during the Industrial Revolution in Europe in the 18th century; however, its development can be traced back several thousand years around the world. In the 19th century, developments in physics led to the development of mechanical engineering science. The field has continually evolved to incorporate advancements; today mechanical engineers are pursuing developments in such areas as composites, mechatronic, and nanotechnology. It also overlaps with aerospace engineering, metallurgical engineering, civil engineering, electrical engineering, manufacturing engineering, chemical engineering, industrial engineering, and other engineering disciplines to varying amounts. Mechanical engineers may also work in the field of biomedical engineering, specifically with biomechanics, transport phenomena, biomechatronic, bionanotechnology, and modelling of biological systems.

  •  What is the use of mechanical engineering?

Mechanical engineers design power-producing machines such as electric generators, internal combustion engines, and steam and gas turbines as well as power-using machines, such as refrigeration and air-conditioning systems. Mechanical engineers design other machines inside buildings, such as elevators and escalators.
  •  What is the role of mechanical engineering in this world?

Mechanical engineers design power-producing machines, such as electric generators, internal combustion engines, and steam and gas turbines, as well as power-using machines, such as refrigeration and air-conditioning systems. Mechanical engineers design other machines inside buildings, such as elevators and escalators.
  •   What is the important of mechanical engineering in this world?

Mechanical engineering plays a critical role in manufactured technologies, from cars to airplanes to refrigerators. It enables you to do many daily activities with ease, as it brings helpful technologies to our modern society.

  • How is mechanical engineering different from other engineering?

Civil engineers are responsible for building things like tunnels and highways, while mechanical engineers focus on mechanical products. Mechanical engineers may work with smaller items, such as medical devices, or they may work on mechanical systems in buildings, such as power generators.

  •   Different fields of mechanical engineering
Areas of interest include: 

Biomedical and Engineering 


This field of study is based on the fundamentals of fluid mechanics and their broad range of applications in the biomedical and engineering arenas. Areas of current research include blood circulation in the body and its potential role in the regulation of normal physiological function and in the development of disease; groundwater and atmospheric flows and their implications for pollutant transport and environmental concerns; aerodynamic flow around transportation vehicles and its impact on vehicle performance; and flow in combustion engines and other energy systems with considerations of efficiency and environmental impact. These areas are investigated both experimentally and computationally.

Combustion and the Environment


Combustion is widely used for energy generation, propulsion, heating and waste disposal, as well as for many other applications. Mechanical engineers are often heavily involved with the design of combustion systems (internal combustion engines, gas turbines, furnaces, etc.) and deal with aspects of combustion ranging from increasing efficiencies to reducing pollutant emissions. This area of interest is designed for those who would like to work in fields that use combustion, or that deal with pollution related to combustion. With the current increased emphasis on reducing pollutants while efficiency is maintained or increased, mechanical engineers are becoming increasingly important in designing and improving combustion systems.
The program of study focuses on basic aspects of combustion, such as the properties of flames and fuels and pollution; applications of combustion to practical systems like engines and burners; design and optimization of systems that use combustion; and environmental considerations like pollution generation, control, transport and effect.

Ground Vehicle Systems


The design of surface vehicles is an aspect of mechanical engineering that emphasizes the development of more environmentally-benign vehicles that can provide transportation while using fewer resources. Innovations in this field require competence in vehicle dynamics, propulsion and engine concepts, control of power transmission and construction of lightweight manufacturable structures and systems. Researchers in this field also study alternatively-fueled power systems, including electric drives.

Heat Transfer, Thermodynamics and Energy Systems

This area of interest emphasizes the fundamentals of heat transfer and thermodynamics and their application to the design of advanced engineering systems. The objective of this program of study is to introduce the fundamental processes of heat transfer and thermodynamics in complex engineering systems to enable more efficient, cost-effective and reliable designs with less environmental pollution and impact. An understanding of heat transfer and thermodynamics is required for the design of efficient, cost-effective systems for power generation (including advanced energy conversion systems), propulsion (including combustion engines and gas turbines), heat exchangers, industrial processes, refining and chemical processing. This area of interest is important to many industries—aerospace, defense, automotive, metals, glass, paper and plastic, as well as to the thermal design of electronic and computer packages.



Manufacturing is the process of converting raw materials into products. A major activity of mechanical engineers is studying and working with various production methods and techniques, integrating creative design activities into actual fabricated products. The manufacturing program  provides hands-on experience with state-of-the-art and computer-integrated processes and manufacturing methods. Laboratories have state-of-the-art manufacturing equipment for conventional and non-traditional machining, three-dimensional measurement and plastic injection molding. The program also emphasizes computer-oriented manufacturing. A manufacturing engineer will have a solid background in manufacturing processes and systems, as well as in statistics, design, controls and applications of microprocessors.

Mechanical Design


Creating and improving products, processes or systems that are mechanical in nature are the primary activities of a professional mechanical engineer. Mechanical design involves product development from concept generation to detailed design, manufacturing process selection and planning, quality control and assurance and life-cycle considerations. Solutions to major social problems such as environmental pollution, energy shortages and a lack of mass transportation and of raw materials will depend heavily on the engineer’s ability to create new types of machinery and mechanical systems. An engineer-designer must have a solid and relatively broad background in the basic physical and engineering sciences and have the ability to solve a variety of problems. In addition to having technical competence, mechanical designers must be able to consider the socio-economic consequences of a design and its possible impact on the environment, as well as its safety, reliability and economics.

System Dynamics and Control

Engineers are increasingly concerned with the performance of integrated dynamics systems in which it is not possible to optimize component parts without considering the overall system. System dynamics and control specialists study the modeling, analysis and simulation of all types of dynamic systems and the use of automatic control techniques to change the dynamic characteristics of systems in useful ways. This program emphasizes physical systems that are closely related to mechanical engineering, but the techniques for studying these systems apply to social, economic and other dynamic systems.

Transportation Systems


An important aspect of mechanical engineering is the planning, design, and operation of transportation systems. As society recognizes the increasing importance of optimizing transportation systems to minimize environmental degradation and energy expenditure, engineers will need to consider major innovations in the way people and goods are moved. These innovations will require competence in vehicle dynamics, propulsion and control, and an understanding of the problems caused by present-day modes of transportation.