METHOD AND SYSTEM FOR DETERMINING A BRAKING TORQUE, BY MEANS OF DETECTION PERFORMED BY PHOTONIC SENSORS AT A FIXING INTERFACE BETWEEN A BRAKE CALIPER BODY AND A RESPECTIVE SUPPORT

A method for determining a braking torque at at least one fixing interface between a brake caliper body and a brake caliper support includes inserting at least one washer device at the at least one fixing interface, the washer device having at least one fiber-optic strain sensor of fiber Bragg grating type, detecting, by the at least one fiber-optic strain sensor, local deformation and/or strain acting in a respective detecting position, and generating at least one respective photonic signal representative of the detected deformation and/or strain, receiving the at least one first photonic signal, by an optical reading/interrogation unit optically connected to the at least one fiber-optic strain sensor, generating at least one electric signal representative of the detected local deformation and/or strain, based on the received first photonic signal, and determining the braking torque based on the at least one electrical signal.