A method for manufacturing a blade for a vehicle suspension, the blade having a curved profile in a rest state and being made of a thermoplastic material, the method implementing: a winding step in which an intermediate element is made by continuously winding a thermoplastic strip around a support; a heating step in which the intermediate element is positioned and then heated in a heating device; a placement step in which the heated intermediate element is placed in a shaping mold; a thermoforming step in which a second part of the shaping mold is closed on a first part so as to obtain the blade.

Provided is a composite material capable of measuring bending deformation, the composite material including: a first conductive composite body that is bendable; a dielectric body that is bendable and compressible; and a second conductive composite body that is bendable, wherein the first conductive composite body and the second conductive composite body are respectively stacked on both surfaces of the dielectric body, and heights of the first conductive composite body and the second conductive composite body from the dielectric body are different from each other.