Drilling

Drilling is a very common operation used for making holes in a material. The tool used is called a drill or drill bit. The drill bit is made to rotate and moves into the material to form a hole. These tools can have high length to diameter ratios, thus allowing deep...

Introduction to Machining Operations

Traditional machining operations, such as drilling and milling, have involved the use of sharp cutting tools to form a piece of material into a desired shape. With time, other machining operations, referred to as non-traditional, have been developed. These no longer...

Resistor Combination

Resistors may be used to represent various electrical components used in practice. One such example is a light bulb that behaves like a resistor. It is therefore important to understand how current and voltages vary when resistors are in series or in parallel....

Stress Transformations

The stress in a body is defined as the force acting per unit area. In practice, due to the presence of multiple forces and the body geometry, stress values vary throughout the body and may lead to areas of stress concentrations. But we will show that even on a single...

Stress Concentration (Stress Riser)

In real world designs, parts are rarely simple in geometry and this may lead to areas of stress concentrations. They are also sometimes known as stress risers and can occur whenever there are abrupt changes in geometry or due to the presence of cracks in a material....