What Is Mechanical Engineering? HVAC, Manufacturing Technology, CAD Design & Thermodynamics Introduction

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There are various branches of Engineering like Civil, Mechanical, Aeronautics, Chemical, Electrical, Computer, Electronics, Electronics and Telecommunications, etc. Mechanical Engineering is one of the most dynamic fields that comprises of a number of applications. In Mechanical Engineering the principles of physics are applied for analysis, design, manufacturing and maintenance of the mechanical systems. Some of the most common subjects that are covered under the field of Mechanical Engineering include manufacturing processes with CAM, designing with CAD, drafting, mechanics, kinematics, thermodynamics, energy, etc.

  1. Manufacturing Technology: Manufacturing technology is the process of producing the finished goods by using various manufacturing processes like cutting, turning, drilling, milling, broaching, rolling, grinding, finishing etc. It also involves study of various machines like lathe, drilling machine, miller, gear cutter, automated machines, CNC machines, CNC programming, hydraulic machines etc. Manufacturing technology also includes controlling the quality of the manufactured product.

  2. Designing: The vehicle you drive, the plane you fly in, the home appliance you are using and much more are all designed by the mechanical engineers. They design the individual components as well as the whole machine and also give the machines aesthetic looks. Various stresses and the loads are calculated and after applying the safety factor, the machine is designed completely. The products are designed in such a manner that at the minimum cost they are able to give maximum functions, this is called optimum design.

  3. Thermodynamics: Another important category of Mechanical Engineering is Thermodynamics which itself is a very vast field. Thermodynamics is the study of energy and its transformation from one form to the other. Like Newton’s various laws of nature, there are various popular laws of thermodynamics like Zeroth law of Thermodynamics, First, Second, Third and Fourth law of thermodynamics. The field of thermodynamics is applied in a wide range of applications.

The Internal Combustion (IC) engines studied under this field are used in all the vehicles including two wheelers, three wheelers and four wheelers. The Direct Combustion (DC) i.e. the diesel engines are also studied under this category. Various energy transfer processes in power plants, various heat transfer processes in refrigerators and air-conditioners, compression processes in compressors, energy production in the generators, are all studied in the field of thermodynamics.

Mechanical Engineering is considered to be the core of engineering because without the progress in this field there can be no progress in the other field. Can you imagine any progress of the human being without vehicles and planes? Can you imagine the world without electric power and comforts like air-conditioners? Mechanical Engineering is a complete branch in itself with wide applications, hence it is considered to be one of the most dynamic fields of engineering.