Michelson interferometer or DC laser interferometer is the oldest device. It utilizes monochromatic light from an extended source, and works on the principle of interference.
What is Coordinate Measuring Machine (CMM)? Working, Parts, Advantages & Applications
Coordinate measuring machine (CMM) is one of the most important equipment used in the contact type inspection process of parts. It is a flexible measuring machine widely used in manufacturing industries for post production inspection of components.
What is Strain Gauge Accelerometer? Working Principle, Construction & Diagram
Fig. 1: Strain Gauge Accelerometer.
Working Principle of Strain Gauge Accelerometer
When acceleration to be measured is applied to a cantilever beam whose movable end is attached to a seismic mass, the mass vibrates, which causes the cantilever beam to deflect and get strained. This strain is proportional to the vibrational displacement of the seismic mass and hence the applied acceleration.
What is Electroslag Welding? Process, Diagram, Advantages & Disadvantages
Electroslag welding is used to join two thick metal plates without edge preparation. The plates to be welded are held in vertical position keeping some gap between edges.
What is Electron Beam Welding? Process, Diagram, Advantages & Applications
In the electron beam welding process, an electron is made to travel in vacuum at high speed by exciting it. This electron strikes the surface of the metal to be welded. The impact gives rise to heat energy which melts the metal and thus welding is obtained.
What is Data Acquisition System? Explanation & Block Diagram
Data Acquisition System is a group of various devices that are combined in an orderly fashion to perform necessary operations on relevant data. Usually a data acquisition system is an assembly of sensors/transducers, signal conditioners, data conversion, data handling, data processing units, multiplexing circuits, data transmission, data storage and data display systems.
What is Thermal Imaging (or Thermography)? Working Principle, Block Diagram & Applications
Thermal imaging or thermography is a technique of scanning the infrared radiation emitted from an object. The collected information is processed and a graphical output showing the temperature distribution across the object is provided. It is possible to measure temperature which lies between – 20° C to +1500° C. The elements of the thermal imaging system are shown in figure 1.
What is Direct Arc Furnace? Construction, Working, Diagram, Advantages & Disadvantages
In Direct arc furnace, an electric arc is struck between carbon or graphite electrodes which produces intense heat. The impurities are oxidized from the charge by melting and absorbed by slag. The slag is run off by tilting the furnace.
What is Investment Moulding? Process, Diagram, Advantages & Disadvantages
Investment Moulding process is also known as lost-wax process or precision casting. In this process, expendable pattern of wax polystyrene plastics or frozen mercury is used for making the casting mould. The term investment refers to the refractory mould surrounding the refractory covered wax pattern.
What is Shell Moulding? Process, Diagram, Advantages & Disadvantages
Shell Moulding process is especially suitable for casting thin walled parts of small or medium size. Stable shell moulds are prepared from a mixture of fine grained quartz sand and synthetic resin binder (thermosetting plastics) such as phenol formaldehyde, urea formaldehydes, alkydes, polysters etc.