töjningsmått

Töjningsmått, or strain gauge in English, is a sensor whose electrical resistance varies with the amount it is stretched or compressed. In simpler terms, it measures strain, which is the deformation of an object in response to an applied force. A common type of töjningsmått consists of a flexible backing material with a thin metallic foil pattern etched onto it. When the object to which the töjningsmått is attached is strained, the foil pattern stretches or compresses, changing its electrical resistance. This change in resistance is directly proportional to the applied strain.

Töjningsmått are widely used in various applications, including structural testing, aerospace engineering, automotive testing, and medical devices. They are crucial for understanding how materials and structures behave under stress and for ensuring their safety and performance. By measuring the strain, engineers can determine the load-bearing capacity of components, detect potential weaknesses, and optimize designs. The output from a töjningsmått is typically a very small change in resistance, which requires specialized electronic circuitry to amplify and measure accurately. This measurement is often expressed in units of microstrain (µε).