## Mechanical Engineering

Mechanical engineering is a branch of engineering that deals with the design, development, and manufacturing of mechanical systems and devices, including machines, engines, and mechanical components.  Mechanical engineers use principles of mathematics, physics, and materials science to design, test, and manufacture mechanical systems that are safe, efficient, and reliable.  It requires a solid understanding of many key concepts including mechanics, kinematics, thermodynamics and energy.  Practitioners of mechanical engineering, known as mechanical engineers, use these principles and others in the design and analysis of automobiles, aircraft, heating & cooling systems, manufacturing plants, industrial equipment and machinery, medical devices and more.

Mechanical engineers can be used as project managers or design engineers for many different applications.  They can work in a variety of industries, including manufacturing, aerospace, automotive, energy, and healthcare.  Many work in design and development, testing and quality control, research and development, or project management, depending on their area of specialization.

### Science Branches

Science
Applied Science
Engineering
Mechanical Engineering

## Mechanical Engineering GlossaRy

### A

• Acceleration  -  The rate of change of velocity.  Whenever a mass experiences a force, an acceleration is acting.
• Angular Velocity  -  The speed that an object moves through an angle, θ.  The calculation below calculates ω but does not calculate the relative velocity of a point as it moves throughout the curve.

### B

• Breakdown Torque  -  Maximum torque an AC motor will develop.

### F

• Fitting  -  A piping component that is used to join piping, change the direction or diameter of piping or end the pipe.
• Flange  -  A bolted connection where two pieces of pipe, equipment, fittings or valves are connected together to form a piping system.
• Force  -  The push or pull of an object resulting in a change from rest or motion.
• Friction  -  The mechanical resistance to the relative movement of two surfaces.

### H

• Horsepower  -  A measure of power or the rate of doing work.

### N

• Newton's First Law  -  A object at rest remains at rest and a object in motion continues to move at a constant velocity unless acted upon by an external force.

### P

• Pipe  -  A hollow tube that can carry products such as fluid, gas, granular and more.
• Power  -  The rate of doing work and is measured by the amount of foot pounds of work done in a particular unit of time.

### S

• Srevice Factor  -  A factor which is used to reduce a strength value to obtain an engineering design stress.
• Speed  -  The rate of change or distance with time.
• Starting Torque  -  The torque produced by a motor at initial switch on.

### T

• Tolerance  -  Permitted deviation between the declared value of a quantity and the measured value.
• Torque  -  A measure of how much twisting is applied to a fastener.

### V

• Valve  -  A mechanism used to stop or open and regulate flow.  The type of valve used depends on the application.

### W

• Work  -  The overcoming of resistance through space and is the measure of force x distance.

Tags: Glossaries