Device, system and process for detecting tensile loads on a rope

Details Device, system and process for detecting tensile loads on a rope Device, system and process for detecting tensile loads on a rope

1990-04-05

1993-01-26

Lee, John D.

Optical waveguides

Optical waveguide sensor

Including physical deformation or movement of waveguide

G02B 644

Patent

active

051827794

ABSTRACT:
A system for monitoring strains and stresses on rope structures and rigid structures containing the ropes is provided wherein a fiber optic is included in a rope structure and change in the fiber's light transmissive/reflective properties, which are caused by strains and stresses on the fiber, are monitored.

REFERENCES:
patent: 4269506 (1981-05-01), Johnson
patent: 4295738 (1981-10-01), Meltz
patent: 4555175 (1985-11-01), Gardner
patent: 4653906 (1987-03-01), Dunphy
patent: 4725110 (1988-02-01), Glenn
patent: 4751690 (1988-06-01), Krueger
patent: 4772092 (1988-09-01), Hofer
patent: 4778246 (1988-10-01), Carroll
patent: 4820012 (1989-04-01), Asai
patent: 5026141 (1991-06-01), Griffiths
Garside, et al., "A Photon Counting Optical Time-Domain Reflectometer for Distributed Sensing Applications," Society of Photo-Optical Instrumentation Engineers, Proceedings of Fiber Optic and Laser Sensors VII, vol. 1169, Paper 11, Sep. 5-8, 1989.
Meltz, et a l., "Formation of Bragg Gratings in Optical Fibers by a Transverse Holographic Method," 14 Optics Letters, No. 15, p. 823, (Aug. 1, 1989).
Yariv, Optical Electronics, pp. 87-95, title page and table of contents, ISBN-0-03-070289-5, CBS College Publishing, Jan. 1985; gives a general description of a Fabry-Perot eltalon (interferometer).

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