| abstract |
The present invention provides a deformation detection sensor which combines a magnetic resin dispersing a magnetic filler in a resin with a magnetic sensor, of which durability of long period of use is highly enhanced. n The present invention thus provides a deformation detection sensor which comprises:n a magnetic resin-containing polymer foam which comprises a magnetic resin, in which a magnetic filler is contained, and a polymer foam in which the magnetic resin is included, and a magnetic sensor that detects a magnetic change caused by a deformation of the magnetic resin-containing polymer foam, wherein an average cell diameter of cells of the polymer foam in the vicinity of an interface between the magnetic resin and the polymer foam is smaller than that of cells of a center portion of the polymer foam, and a production thereof. |