strain gauge theory

Strain gauge theory involves measuring how much a material deforms or strains when subjected to a force. A strain gauge is a small device attached to the surface of a structure; it contains a fine wire or foil that changes its electrical resistance when stretched or compressed. These resistance changes are proportional to the amount of strain, allowing precise measurement of stress and deformation in the material. This technique helps engineers monitor structural integrity, ensuring safety and performance by providing real-time data on how materials respond under load or environmental conditions.