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Strain transducers

 Strain transducers

Strain is defined as the deformation of a material caused by the action of stress. Defi ned as force per

unit area, stress is a measure of the intensity of internal forces acting within a body.

 

Strain is determined by a change that takes place between two material states, from the initial state to the final state. The physical displacement of two points in this material between these two states is used to express the numerical value of strain.

 

A strain gauge is a device used to measure the deformation of a material when forces act

upon it; the principles of a metallic foil strain gauge.

 

 Edward E. Simmons, an electrical engineer from the USA, developed the principle

of the metallic foil type in 1938.

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