TY - JOUR
AU - 
AB - sensors Communication Integrated Optical Deformation Measurement with TIR Prism Rods 1 , 2 Alexander Wolf Institute of Product Development, Gottfried Wilhelm Leibniz Universität Hannover, An der Universität 1, 30823 Garbsen, Germany; wolf@ipeg.uni-hannover.de Cluster of Excellence PhoenixD (Photonics, Optics, and Engineering—Innovation across Disciplines), Welfengarten 1A, 30167 Hannover, Germany Abstract: In this paper, a novel optical measurement principle for deformation, especially torsion, is presented. A laser beam is guided via total internal reflection (TIR) in a prism rod. Every single reflection causes an increasing change in the beam path, which can be measured by its effect on the outcoupling position of the laser. With a diameter of the prism rod of 10 mm and a length of 120 mm, the system achieves torsion sensitivities between 350 m/ and more than 7000 m/ , depending on the actual torsion angle j. A decency level of sensitivity is defined for comparison, which is exceeded by a factor of  55 at j = 0. The presented principle of TIR prism rods can be adapted to measure different load cases. Using two laser beams, bending and torsion can be distinguished and combined load cases analyzed. The resulting system can be integrated into machine elements, 
TI - Integrated Optical Deformation Measurement with TIR Prism Rods
JF - Sensors
DO - 10.3390/s23020943
DA - 2023-01-13
UR - https://www.deepdyve.com/lp/unpaywall/integrated-optical-deformation-measurement-with-tir-prism-rods-wvPi1xnQm1
DP - DeepDyve
ER -