Design and Evaluation of a Fiber-Optic Grip Force Sensor with Compliant 3D-Printable Structure for (f)MRI Applications

Figure 7

Creep and recovery response following a long-term load of 800 N. The dashed line represents the applied force by the material testing machine, and the solid line represents the estimated force, as well as its derivative, based on the sensor reading and sensitivity. The decay rate and the half-life are provided for the exponential drift of the force after the long-term load.