Force sensor for determination of force applied to test-piece

摘要

The sensor has a support (4) over which is a pressure-sensitive layer (1) with conductors (3) and a force initiating punch (5), the edges of which are positioned so that they are above groove areas (6) in the top surface of the pressure-sensitive layer. There is no direct contact between the edges and the pressure-sensitive layer. A possible alternative is to extend the conducting paths (3) over the whole surface of the conducting layer and/or the whole punch surface. Further, two pressure-sensitive layers may be arranged on either side of a support with two corresponding punches so that a force can be applied from each side.