Shaft Coupling
Shafts are usually available up to 7 metres length due to inconvenience in transport. In order to have a greater length, it becomes necessary to join two or more pieces…
KEYS
A key is a piece of mild steel inserted between the shaft and hub or boss of the pulley to connect these together in order to prevent relative motion between…
Types of Shafts
Material Used for Shafts The material used for shafts should have the following properties : It should have high strength. It should have good machinability. It should have…
Shafts in Series and Parallel
When two shafts of different diameters are connected together to form one shaft, it is then known as composite shaft. If the driving torque is applied at one end and the resisting…
Torsional Shear Stress
When a machine member is subjected to the action of two equal and opposite couples acting in parallel planes (or torque or twisting moment), then the machine member is said…
Bulk Modulus
When a body is subjected to three mutually perpendicular stresses, of equal intensity, then the ratio of the direct stress to the corresponding volumetric strain is known as bulk modulus. It is…
Shear Stress and Strain
When a body is subjected to two equal and opposite forces acting tangentially across the resisting section, as a result of which the body tends to shear off the section,…
Tensile Stress and Strain
When a body is subjected to two equal and opposite axial pulls P (also called tensile load) as shown in Fig. (a), then the stress induced at any section of…
Stiffness and Strength
Bend or Break: Stiffness, Strength, and Materials for Precision Machine Design Traditional mechanical engineering is the domain of stress and strength – will a thing break or permanently deform when subject to a given load…
Factor Of Safety Used in Machine Design
Factor of Safety : While designing the component it is necessary to ensure that sufficient reserve strength is kept to deal with an uncertain situation. The factor of safety is…
