&lt;title&gt;Development of smart systems for building structures&lt;/title&gt;

Otani, Shunsuke; Hiraishi, Hisahiro; Midorikawa, Mitsumasa; Teshigawara, Masaomi; Fujitani, Hideo; Saito, Taiki

doi:10.1117/12.383127

Cited by 16 publications

(9 citation statements)

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“…Figure 23 compares the inelastic S a —S d response curve computed using the recorded acceleration on the shaking table and the capacity curve. In drawing the response curves, Equations () and () were considered to numerically evaluate the inelastic damping, which were commonly used for a performance‐based design in Japan 28 . The capacity curve was evaluated based on the secant stiffness at the yield point and the yield strength calculated above.…”

Section: Resultsmentioning

confidence: 99%

Tie system to upgrade out‐of‐plane performance of infill masonry walls

Choi,

Nakano,

Sanada

et al. 2024

Earthq Engng Struct Dyn

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The objectives of this study were to investigate the out‐of‐plane behavior of unreinforced masonry (URM) infill walls and to identify the effectiveness of tie systems that were proposed to enhance the infill stability under both in‐ and out‐of‐plane effects. This study examined three types of tie systems: a full‐length tie system (prototype), a staggered tie system and a half‐length tie system. For this purpose, four 1/4‐scale, single‐story, one‐bay masonry infilled reinforced concrete (RC) frame specimens with and without the proposed tie systems were sequentially tested under in‐plane static cyclic loading and out‐of‐plane dynamic excitation. In the experimental study, two series of shaking table tests were conducted to investigate the out‐of‐plane behavior of the infill walls. The first series compared the fundamental out‐of‐plane performance of three proposed tie systems, and the second series verified the effectiveness of the full‐length tie system to prevent infill out‐of‐plane failure under an excitation simulating the severe floor response in medium‐rise buildings. The test results indicated the following: (1) the presence of the tie systems caused minor differences in the in‐plane capacity and ductility of each specimen, (2) the effectiveness of the full‐length and staggered tie systems was superior to that of the half‐length tie system, and (3) the full‐length tie system not only prevented the infill out‐of‐plane failure but also significantly reduced the infill damage under realistic excitation conditions. The above research outcomes provide a useful contribution of the infill to upgrade the seismic resistance of buildings.

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Section: Resultsmentioning

confidence: 99%

Tie system to upgrade out‐of‐plane performance of infill masonry walls

Choi,

Nakano,

Sanada

et al. 2024

Earthq Engng Struct Dyn

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“…All the reflected light will combine in backward direction [3]. Meanwhile, the characteristics of FBG temperature sensor are thin, strong, heat resistance, low attenuation signals, light and transmitting together [4][5]. The working principle of FBG is shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Design of metal plate temperature sensor based on fiber bragg grating (FBG)

Naim

Anuar

Sarnin

et al. 2019

IJEECS

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<p>This paper presents the design and characterization for metal plate temperature sensor based on Fiber Bragg Grating (FBG). Five types of FBGs were used such as Acrylate FBG, Bare FBG, Bimetallic Acrylate FBG, Bimetallic Bare FBG and Ceramic FBG to determine the sensitivity on four different plates at 23℃ to 70℃, experimentally. The four different plates are Aluminium, Aluminium Coating, Zinc and Zinc Coating has been used because of their excellent thermal conductivity. Two metals which are Copper and Zinc have been chosen to design the Bimetallic Strips FBG due to the Coefficient Thermal Expansion (CTE) to improve their sensitivity. The results show that Ceramic FBG has been chosen as the best temperature sensor because it has the highest sensitivity compared to other FBGs with sensitivity value of 50.4 and 59.7 pm  16(â„ƒ)-1"> when in contact with Aluminium and Zinc plates, respectively. In addition, Aluminium and Zinc plates has been chosen as the most reliable metal plates where it can transfer heat efficiently due to high thermal conductive which is 237 W/mK and 116 W/mK thus it gives the highest sensitivity when measured using Bimetallic Acrylate, Bimetallic Bare and Ceramic FBG.</p>

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“…FBG thermal sensor has many virtues: light, thin, strong electromagnetic anti -jamming quality, corrosion resistance, heat-resistance, small attenuation of signals, integrating information sensing and transmitting together, and so on. It can solve some problems that general detective methods can't process [1][2][3]. At the same times, more gratings can be written in one strip of fiber, their addresses are organized using multi-channel technology, so FBG sensing system has the ability of distributed detection, a multi-channel distributed sensor system can have hundreds of sensors.…”

Section: Introductionmentioning

confidence: 99%

The study of enhancing temperature sensitivity for FBG temperature sensor

Han

et al. 2009

2009 International Conference on Machine Learning and Cybernetics

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In this paper, the basic sensing principle of fiber bragg grating(FBG) temperature sensor is introduced, and the general packaging methods are showed. On that basis, a new method of packaging FBG is advanced, which increases the thermal sensitivity coefficient and eliminates the impact of stress. Through experiments, the thermal characteristics and stress effect of the naked FBG and the packaged FBG are analyzed, the results show that the trend line of the packaged FBG has good linearity, and the method basically eliminates the stress effect, the sensor can be used accurately to monitor states of the thermal equipments, and the thermal range sensed is from -15℃ to 200℃.

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<title>Development of smart systems for building structures</title>

Cited by 16 publications

References 0 publications

Tie system to upgrade out‐of‐plane performance of infill masonry walls

Tie system to upgrade out‐of‐plane performance of infill masonry walls

Design of metal plate temperature sensor based on fiber bragg grating (FBG)

The study of enhancing temperature sensitivity for FBG temperature sensor

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