venitusmõõturi

A venitusmõõtur, also known as a strain gauge, is a sensor that measures deformation or strain. It typically consists of a thin, flexible foil pattern etched onto a backing material. When this foil is attached to an object and the object undergoes strain, the foil stretches or compresses. This change in length alters the electrical resistance of the foil. By measuring the change in resistance, the amount of strain can be precisely determined.

The principle behind a venitusmõõtur relies on the piezoresistive effect, where the electrical resistivity of a material changes in response to mechanical strain. A common configuration for a venitusmõõtur involves a Wheatstone bridge circuit. By incorporating the venitusmõõtur as one or more arms of the bridge, even small changes in its resistance can be amplified and measured accurately.

Venitusmõõturid are widely used in various fields, including engineering, manufacturing, and research. They are employed to measure stress, load, pressure, and displacement in a multitude of applications. Examples include monitoring the structural integrity of bridges and aircraft, calibrating testing machines, and developing sophisticated control systems for industrial processes. Their sensitivity and versatility make them indispensable tools for quantifying mechanical behavior.