Development of lateral displacement sensor for real-time detection of structural damage

Iwao Matsuya, Ryota Tomishi, Maya Sato, Kiyoshi Kanekawa, Yoshihiro Nitta, Motoichi Takahashi, Satoru Miura, Yasutsugu Suzuki, Tomohiko Hatada, Ryuta Katamura, Takashi Tanii, Shuichi Shoji, Akira Nishitani, Iwao Ohdomari

    Research output: Contribution to journalArticle

    16 Citations (Scopus)

    Abstract

    We have developed a novel sensor that enables us to measure the relative story displacement of a building structure in real time. This lateral displacement sensor (LDS) is composed of a light-emitting diode (LED) array, which is fixed on the ceiling, and a position-sensitive detector (PSD) unit, which is placed on the floor. We optimized the LDS to achieve high accuracy in lateral displacement measurement. The accuracy was evaluated to be 60 μm by conducting shaking table tests. Two LDSs were implemented in an actual building equipped with an active variable stiffness (AVS) system, and the building was vibrated with seismic waveforms by an exciter placed on the rooftop. The seismic displacement of the second floor relative to the first floor was measured using the LDS. Furthermore, the inclination angle of the second floor could be measured using the LDS during the seismic vibration. Using the AVS system, we realized the residual displacement of the second floor without inducing damage to the building, and succeeded in real-time residual displacement measurement for the first time. These results indicate that the LDS is useful for the health diagnosis of a building structure.

    Original languageEnglish
    Pages (from-to)266-272
    Number of pages7
    JournalIEEJ Transactions on Electrical and Electronic Engineering
    Volume6
    Issue number3
    DOIs
    Publication statusPublished - 2011 May

    Fingerprint

    Sensors
    Displacement measurement
    Stiffness
    Ceilings
    Light emitting diodes
    Health
    Detectors

    Keywords

    • Damage detection
    • Position-sensitive detector
    • Relative story displacement
    • Residual displacement
    • Structural health monitoring

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

    Cite this

    Matsuya, I., Tomishi, R., Sato, M., Kanekawa, K., Nitta, Y., Takahashi, M., ... Ohdomari, I. (2011). Development of lateral displacement sensor for real-time detection of structural damage. IEEJ Transactions on Electrical and Electronic Engineering, 6(3), 266-272. https://doi.org/10.1002/tee.20654

    Development of lateral displacement sensor for real-time detection of structural damage. / Matsuya, Iwao; Tomishi, Ryota; Sato, Maya; Kanekawa, Kiyoshi; Nitta, Yoshihiro; Takahashi, Motoichi; Miura, Satoru; Suzuki, Yasutsugu; Hatada, Tomohiko; Katamura, Ryuta; Tanii, Takashi; Shoji, Shuichi; Nishitani, Akira; Ohdomari, Iwao.

    In: IEEJ Transactions on Electrical and Electronic Engineering, Vol. 6, No. 3, 05.2011, p. 266-272.

    Research output: Contribution to journalArticle

    Matsuya, I, Tomishi, R, Sato, M, Kanekawa, K, Nitta, Y, Takahashi, M, Miura, S, Suzuki, Y, Hatada, T, Katamura, R, Tanii, T, Shoji, S, Nishitani, A & Ohdomari, I 2011, 'Development of lateral displacement sensor for real-time detection of structural damage', IEEJ Transactions on Electrical and Electronic Engineering, vol. 6, no. 3, pp. 266-272. https://doi.org/10.1002/tee.20654
    Matsuya, Iwao ; Tomishi, Ryota ; Sato, Maya ; Kanekawa, Kiyoshi ; Nitta, Yoshihiro ; Takahashi, Motoichi ; Miura, Satoru ; Suzuki, Yasutsugu ; Hatada, Tomohiko ; Katamura, Ryuta ; Tanii, Takashi ; Shoji, Shuichi ; Nishitani, Akira ; Ohdomari, Iwao. / Development of lateral displacement sensor for real-time detection of structural damage. In: IEEJ Transactions on Electrical and Electronic Engineering. 2011 ; Vol. 6, No. 3. pp. 266-272.
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