Low weight additive manufacturing FBG accelerometer: Design, characterization and testing

Design and Modeling of a High Sensitivity Fiber Bragg Grating-Based Accelerometer

“…The performance of the FBG-based device discussed in this work compares well with those considered in the literature, as can be seen from Table II, which summarizes performance data from a number of previously reported devices. The generic model based on double-point encapsulation which has been established shows a sensitivity obtained which is greater than other sensor designs when viewing this within a similar frequency band [17], [19], [21]. The 'figure of merit' (PSRF) used is much higher than that for the other sensors, data on which has been taken from the literature [8]- [29].…”

“…In the work of Zhang et al [20], a compliant cylinder accelerometer was discussed where the sensitivity reported was 42.7pm/G and the resonant frequency 400Hz. Gutiérrea et al [21] have presented a cylinder-based FBG accelerometer giving a sensitivity of 19.65pm/G and resonant frequency in excess of 500Hz. Further, Wang et al [22] designed a high frequency accelerometer where the resonant frequency was given as 3806Hz and the sensitivity ∼4pm/G.…”

Ultrasensitive vibration sensor based on an asymmetric multi-core optical fiber

“…It can be accomplished in different ways, for example, by gluing a segment of optical fiber on a metallic cantilever beam [1,2], or by attaching a seismic mass that weights a few grams to a pre-strained optical fiber [3]. Recent approaches includes elaborated mechanical systems that strain efficiently the optical fiber [4]. In the aforementioned configurations, vibrations are converted in periodic strain to the optical fiber.…”

“…In the aforementioned configurations, vibrations are converted in periodic strain to the optical fiber. Strain can be monitored with high precision with Bragg gratings [1][2][3][4]. As a result, highly sensitive vibrations sensors can be devised.…”

Hybrid fiber Bragg grating sensor for vibration and temperature monitoring of a train bearing

“…However, these cantilever-based structures have the deficiency that its resonant frequency and sensitivity severely restrict each other, which can not satisfy the actual demand that the bearing often vibrates with hundreds of hertz and a small acceleration. Several accelerometers with a high resonance frequency or sensitivity have been reported, such as using a polymer optical FBG [14] , multi-flexible hinges [15] , and a hexagonal lattice hollow cylinder [16] , however, these designs suffered from high cost, complex structure and fabrication, or big bulk. Accelerometers with a spring-mass structure vibrate along the FBG axis and have many advantages such as compact size, low weight, and high frequency [17][18][19] .…”