Configuration and working principle of the fiber-optic loop-sensor.
Relationship of displacement with (a) relative transmitted power and (b) force applied through a loop of 6 mm radius under loading condition similar to that shown in Fig. 1.
(a) Comparison of calculated and experimentally measured power attenuation and (b) closer view of three successive peaks.
Closer view of the region between two intermediate peaks in the experimental results for a 6 mm radius loop-sensor.
(a) Experimental setup for the calibration of loop-sensors and (b) schematic of functional components.
Optical power-displacement and load-displacement relationships for loops-sensors of four different radii.
High sensitivity range of loop-sensors having (a) and (b) .
Pear-shaped loop-sensors used in fatigue testing.
Experimental setup for cyclic loading tests.
Results of testing a 5 mm radius loop-sensor for loading-unloading cycles (a) relative transmitted power, (b) force, and (c) closer view of the last three cycles.
Results of testing a 6 mm radius loop-sensor under loading-unloading cycles at the displacement rates of (a) 0.01, (b) 0.05, (c) 0.2, and (d). 0.4 mm/s.
Geometrical parameters and index of refraction of Corning SMF28e fiber.
Article metrics loading...
Full text loading...