Strain gauge working principle pdf

Considering the mounting, strain gauges can be either bonded or unbonded and based on the construction, we can have foil, semiconductor, and photoelectric strain gauges. Scribd is the worlds largest social reading and publishing site. There are several strain gauge types based on the principle of their working viz. The foil diaphragm and the adhesive bonding agent must work together in transmitting the strain. Hi friends, in this article, i am going to describe you strain gauge working principle, gauge factor and strain gauge load cell working. A strain gauge also spelled strain gage is a device used to measure strain on an object. Strain gauge working principle electrical resistance. Lets briefly learn about stress and strain and strain gages. The most stressed places of the charge air cooler are the four. A strain gauge is a passive transducer, that converts mechanical displacement into the change of resistance. Pdf strain gauges are used to measure the strain of a material. Strain gauge and thermocoupl es location own work the exact position of sensors were definied by finished element analysis.

Strain gauge working principle instrumentation tools. It is often easy to measure the parameters like length, displacement, weight etc that can be felt easily by some senses. When force is applied to any metallic wire its length increases due to the strain. For overhead work, the cement drop was put onto the. A strain gauge is a resistor used to measure strain on an object. Pdf strain gauge principle, types, features and applications. This article presents an application of strain gauges in measurements of strain which occurs in charge air cooler during the thermal cycle test. Principle, types, features and applications medium.

An introduction to strain gauge and strain measurement. Since strain always accompanies vibration, the strain gage or the principle by which it works is broadly applicable in the field of shock and vibra tion measurement. A strain gauge is a long length of conductor arranged in a zigzag pattern on a membrane. This deformation in the shape is both compressive or tensile is called strain, and it is measured by the strain gauge. Strain gauge sensors or piezoresistive sensors piezoresistive means pressuresensitive resistance, or a resistance that changes value with applied pressure. Strain gauge working principle free download as pdf file. When it is stretched, its resistance increases and vice versa. Deepocean bottom pressure measurements in the northeast pacific pdf. Construction and working principle electronic instrumentation duration. A strain gauge sensor is a thin waferlike device that can be attached to a variety of materials to measure applied strain. Strain gauge working principle your electrical guide. Types of strain gages include foil strain gage, wire strain gage. Pdf application of strain gauges in measurements of.

When an external force is applied on an object, due to which there is a deformation occurs in the shape of the object. The strain gauge is a classic example of a piezoresistive element, a typical strain gauge element shown here on the tip of my finger. A strain gauge works on the principle of electrical conductance and its dependence on the conductors geometry. Principle of strain gages the strain gage is tightly bonded to a measuring object so that the sensing element metallic resistive foil may elongate or contract according to the strain borne by the measuring object.