Fiber Bragg Grating Accelerometer Based on L-Shaped Rigid Beam and Elastic Diaphragm for Low-Frequency Vibration Measurement

Yujie, 曾宇杰 Zeng; Jun, 王君 Wang; Huayong, 杨华勇 Yang; Lina, 马丽娜 Ma

doi:10.3788/aos201535.1206005

Cited by 5 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the design of Mita et al, FBG is not directly fixed onto the L-shaped cantilever beam, but instead, a point contact is used with the cantilever beam to ensure the consistency of the strain applied to the entire FBG. A similar design was made by Weng et al [79,80].…”

Section: Optical Wavelength Modulationmentioning

confidence: 98%

Optical Accelerometers for Detecting Low-Frequency Micro-Vibrations

Lei

Zhang

et al. 2022

Applied Sciences

View full text Add to dashboard Cite

Optical accelerometers are high-precision inertial sensors that use optical measurement technology to achieve high-precision and electromagnetic interference-resistant acceleration measurements. With the intensive research and development of optical accelerometers in recent years, their applications in inertial navigation, structural health monitoring, precision vibration isolation systems, wind turbine fault monitoring, earthquake monitoring, and other low-frequency vibration detection have flourished. Optical accelerometers have various schemes; however, their characteristics vary considerably due to different optical modulation schemes. This study aims to address the lack of systematic evaluation of currently available low-frequency optical accelerometers. Optical accelerometers can be classified into four categories in accordance with their optical modulation schemes: optical path-, optical intensity-, optical phase-, and optical wave-length-modulated accelerometers. The typical performance, advantages and disadvantages, and possible application scenarios of various optical accelerometers are summarized. This study also presents the current status and trends of low-frequency optical accelerometers in consideration of the growing demand for high-precision, low-frequency acceleration measurements.

show abstract

Section: Optical Wavelength Modulationmentioning

confidence: 98%

Optical Accelerometers for Detecting Low-Frequency Micro-Vibrations

Lei

Zhang

et al. 2022

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…This sensor is known for its restricted beam amplitude and exceptional shock resistance qualities. The science behind this FBG accelerometer based on an L-shaped beam and elastic diaphragm, which boasts remarkable stability and lateral interference immunity was referred from Zeng et al [68]. Their accelerometer demonstrated an acceleration sensitivity of 220 pm/g and operates efficiently within a frequency response range of 20 Hz to 70 Hz, although its complex structure is a noteworthy aspect of its design.…”

Section: Numerical Simulations and Experimental Proceduresmentioning

confidence: 99%

A Review on the Latest Advancements and Innovation Trends in Vibration-Based Structural Health Monitoring (SHM) Techniques for Improved Maintenance of Steel Slit Damper (SSD)

Payawal,

Kim

2024

IEEE Access

View full text Add to dashboard Cite

Steel slit damper (SSD) is specifically engineered to absorb and disperse energy to mitigate the possibility of structural damage and collapse during seismic events. However, the effectiveness of these dampers are compromised due to wear, corrosion and other forms of material degradation and failure mechanisms. For this reason, it is important to consistently monitor its condition and conduct maintenance and repairs to guarantee safety and dependability of the structures it is installed with. Now, vibration-based techniques have emerged as a promising structural health monitoring (SHM) strategy. It involves methodologies for detecting changes in functions and analyzing vibrations to discover potential problems. This study entails a comprehensive examination of the most recent advancements and breakthroughs in vibration-based methodologies used in SHM. Using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA 2020), we identified several key techniques and technologies that show promise in enhancing the maintenance and monitoring of steel -or steel and metal surfaces-slit dampers. The pros and cons of these methods are presented to be applicable when monitoring an SSD. This paper presents notable figures and their corresponding discussions to achieve enhanced understanding of the advancements in SHM towards sensor technologies, monitoring techniques, and applications in civil infrastructure. Furthermore, this paper reviews the applications and functions framework for real-time SHM of SSDs together with their practical implementations and applications using diverse monitoring technologies to promote innovation. Finally, the optimal sensor selection criteria, data gathering methodologies, experimental settings, innovative approaches with comparative analyses, and a proposed maintenance standard for SSDs are described in this study. INDEX TERMSSteel slit damper, structural health monitoring, vibration-based techniques, PRISMA 2020.

show abstract