Abstract
We proposed a stress tensor sensor that is embedded in an elastic body and can measure the stress tensor around it. The sensor consists of a cube shaped rigid body and sub-sensors that measure normal stress on each sides of the rigid body. We explained the theory to decompose the shear stress and the non-uniform normal stress. Also, we fabricated a prototype sensor. The theory was examined by the prototype. The experimental results show that the sensor can measure normal stress and shear stress at once. Also, the sensor can distinguish the shear stress and the linearly varied normal stress.
