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Proceedings Paper

Fiber optical interferometric methods for investigation of deformations of building structure
Author(s): Yuri N. Kulchin; Oleg B. Vitrik; Yana I. Vitrik; Yuri S. Petrov; Roman V. Romashko; Eugene N. Piskunov
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Paper Abstract

Two fiber-optical methods for monitoring of stress processes in building structures under deformation are proposed. First method is based on using single-fiber double-mode interferometer as a sensor. It is shown that the single- fiber double-mode interferometer implanted into structure of a tested concrete unit allows to measure the unit structural deflection, absolute elongation and residual deformations in real time with accuracy not worse than 0.05 micrometers . It is also shown that the developed interferometric method allows to indicate a point of time of unit's crack initiation and also to estimate the crack opening displacement. Second method based on using single-fiber multimode as a sensor and photorefractive crystal allows to long-term monitor for dynamics of crack generation in real time.

Paper Details

Date Published: 8 May 2001
PDF: 4 pages
Proc. SPIE 4416, Optical Engineering for Sensing and Nanotechnology (ICOSN 2001), (8 May 2001); doi: 10.1117/12.427003
Show Author Affiliations
Yuri N. Kulchin, Far Eastern State Technical Univ. (Russia)
Oleg B. Vitrik, Far Eastern State Technical Univ. (Russia)
Yana I. Vitrik, Far Eastern State Technical Univ. (Russia)
Yuri S. Petrov, Far Eastern State Technical Univ. (Russia)
Roman V. Romashko, Far Eastern State Technical Univ. (Russia)
Eugene N. Piskunov, Far Eastern State Technical Univ. (Russia)


Published in SPIE Proceedings Vol. 4416:
Optical Engineering for Sensing and Nanotechnology (ICOSN 2001)
Koichi Iwata, Editor(s)

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