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Friday, 25 November 2016

Introduction to Engineering Statics

Starting with the definition of Mechanics, it is a branch of physics that deals with the state of rest or motion of the bodies which are subjected to the external forces. Mechanics is further divided into three categories namely, rigid body mechanics, deformable body mechanics, and fluid mechanics. In this course we will stick to the rigid body mechanics as it provides the base for deformable body mechanics and fluid mechanics. Moreover, rigid body mechanics is an important tool to design and analyse the mechanical structures, components and electrical devices that we encounter in engineering.

What is Engineering statics
Introduction to Engineering Statics


Rigid body mechanics is further divided into two main areas namely, statics and dynamics.
Statics is concerned with the equilibrium of bodies, i.e. those that are at rest or moving with constant velocity. On the other hand, Dynamics is concerned with accelerated bodies. Statics is an important course of study for many engineering courses because it provides the basic knowledge to treat with those objects that are designed with an objective to remain in equilibrium through out it's life.

If we search for the origin of statics and dynamics, we find that, knowledge of statics evolved earlier than dynamics. We find the principles of statics in the work of Archimedes (287-212 B.C.). While on the other hand, we all know principles of dynamics are dependent on accurate and precise measurement of time. Galileo Galilei (1564-1642) is one of a major and earlier contributors to this category of mechanics.

Mechatronics engineering syllabus offer this course, because this is one of basic course of mechanical engineering. So mechatronics engineers must master this course to call themselves real mechatronics engineers.

Thursday, 24 November 2016

Introduction to Workshop Practice

We all know that science is growing at a fast rate and new theories emerge time to time. These new theories either offer efficient alternatives to the existing ones or add a new asset to life of human being. Besides that, it has been one of a prime interests of engineers to manufacture products utilizing scientific knowledge for the betterment of human being. To utilize the new theories and convert them into the useful products, engineers always felt the need of improved and advanced manufacturing processes, efficient tools and suitable materials.

Before 20th century, engineering was thought of converting scientific knowledge into the products of greater worth to the human beings, but it is not the same now. Engineers today, search for those processes, materials, and tools, that are efficient and have low or no impact on the environment. We can term it as pollution free engineering. Today engineers have to select only those technological methods which are environmental friendly.

Workshop Practice
Introduction to Workshop Practice

In this course we will discuss conventional methods of manufacturing, as they provide base for our studies, and the modern methods, tools, and materials of manufacturing that are alternatives to the conventional ones. In this way we will be able to grasp more information efficiently. 

Monday, 21 November 2016

Introduction to Applied Physics

Physics, like other branches of science, would not be explained without experimental observations and quantitative measurements. The core purpose of physics is to discover those limited number of those fundamental laws that are related to some natural phenomena, and to use them to create new theories that can help predict the consequences of other experiments. These fundamental laws are often in the form of some mathematical expressions, those expressions which help us understand and analyse the results of new experiments.

When an experiment cannot be explained using one or more than one of the existing theories, there is a need to devise or update the existing theories to the level where they can explain and analyse the experiment. Some theories have limitations while other which are general are not limited to some specifications. "For example, the laws of motion discovered by Isaac Newton (1642–1727) in the 17th century accurately describe the motion of bodies at normal speeds but do not apply to objects moving at speeds comparable with the speed of light." (Quoted From "Fundamentals of Physics" by Halliday and Resnick,) "In contrast, the special theory of relativity developed by Albert Einstein (1879–1955) in the early 1900s gives the same results as Newton’s laws at low speeds but also correctly describes motion at speeds approaching the speed of light." Here we say that Newton's theory was specific to the bodies moving with normal speeds, while, Einstein's theory was more general that can describe the motion of bodies moving with normal speeds as well as high speeds.

The physics which was developed before 20th Century is called Classical Physics. It includes all the experimental and theoretical work done in classical mechanics, electromagnetism and thermodynamics. The major contributions in the classical physics are provided by Newton. He is known to be one of the originators of the calculus.

The physics which began to develop near the end of 19th century is called Modern Physics. The motivation behind the discovery of this new era physics or modern physics was, that, many natural phenomena occurring in the nature were still undefined in scope of Classical Physics. This led to the development of new theories i.e. Theory of Relativity and Quantum Mechanics. Theory of relativity was developed by Einstein and it gave the scientists new ways to think about space, time, and energy. The quantum mechanics is the results of the hard work of number of distinguished scientists. It applies on both, microscopic and macroscopic worlds.

Thus, Physics is the core subject for many engineering courses, because it provides both experimental and mathematical explanation of the physical phenomena occurring in nature. It is important because it provides the explanation of other sciences as well. Our motivation towards studying this course is to understand and analyze many physical phenomena around us, which should be a hobby for an engineer.