6 August 2001 Ground strain measuring system using optical fiber sensors
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This paper presents a device to measure the dynamic horizontal shear strain of the ground during earthquake. The proposed device consists of a bronze plate with fiber Bragg grating sensors attached on it. The device is vertically installed in the ground, and horizontal shear strain of the ground is measured as deflection angle of the plate. Employment of optical fiber sensors makes the proposed device simple in mechanism and highly durable, which makes it easy to install our device in the ground. We conducted shaking table tests using ground model to verify applicability of the proposed device.
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Tadanobu Sato, Tadanobu Sato, Riki Honda, Riki Honda, Shunjiro Shibata, Shunjiro Shibata, Naoki Takegawa, Naoki Takegawa, } "Ground strain measuring system using optical fiber sensors", Proc. SPIE 4328, Smart Structures and Materials 2001: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials, (6 August 2001); doi: 10.1117/12.435549; https://doi.org/10.1117/12.435549

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