A Sensitive and Fast Fiber Bragg Grating-Based Investigation of the Biomechanical Dynamics of In Vitro Spinal Cord Injuries

Mac-Thiong, Jean-Marc; Wagnac, Éric; Petit, Yvan; Ung, Bora

doi:10.3390/s21051671

Cited by 12 publications

(8 citation statements)

References 28 publications

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“…He developed a model, an optical pressure sensing scheme which again uses a fiber Bragg grating, and a narrow-band filter was designed to detect and demonstrate the transverse compression inside a spinal cord. In this we can also understand the sudden strain in internal soft tissue with high spatiotemporal resolution [ 3 ]. Conventional FBG sensing and calibration setup carried with FBG interrogator is shown in Fig.…”

Section: Different Application Of Fbg Sensormentioning

confidence: 99%

“…1 a Schematic representation of the longitudinal mid-cross-section of the instrumented spinal cord surrogate with the integrated fiber Bragg grating (FBG) sensor. b Transverse view of the mechanical and optical setup [ 3 ] …”

Section: Different Application Of Fbg Sensormentioning

confidence: 99%

“…Hence, FBG sensor along with narrow band filter detects the transverse compression inside a spinal cord with a response time of 20 microseconds. On comparing with other schemes that are costly and analyzes slow optical spectra, this FBG sensors replacing spectral interrogation with power measurements results in a lesser loss in accuracy [ 3 ]. In the next context, Lee et al discussed on utilizing hybrid high resolution Bragg Grating sensor to achieve fast response to dynamic, continuous motion and signal pattern monitoring instrument.…”

Section: Different Application Of Fbg Sensormentioning

confidence: 99%

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Recent advancements of fiber Bragg grating sensors in biomedical application: a review

Rohan

Venkadeshwaran

Ranjan

2023

J Opt

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Due to attractive application in the medical field, fiber Bragg grating sensor has become increasing attractive from past few decades for various strain sensing applications. FBG sensor has been used in many applications such as different surgical devices, vital sign detection devices, invasive surgery, heart rate, dental applications and biosensing application as wearable sensing devices. This paper reviews the 55 recent research articles published on fiber Bragg grating sensor for biomedical application used the qualitative, quantitative and experimental method to identify the recent advancement and challenges. In this study, particular focus is placed on applications for biomechanical devices, temperature monitors, respiratory monitors, and biosensing applications. Critical things, demands, and emerging trends for these sensing devices are also discussed in order to determine what will be needed for the next generation.

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Section: Different Application Of Fbg Sensormentioning

confidence: 99%

Section: Different Application Of Fbg Sensormentioning

confidence: 99%

Section: Different Application Of Fbg Sensormentioning

confidence: 99%

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Recent advancements of fiber Bragg grating sensors in biomedical application: a review

Rohan

Venkadeshwaran

Ranjan

2023

J Opt

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“…The piezoresistive sensor reaches the peak pressure value almost 0.5 s after the FBG sensor for the case of P 0 = 2.08 bar and 3.02 bar (figures 4(a) and (b)), and the delay is about 2 s for P 0 = 4.32 bar and 5.6 bar (figures 5(a) and (b)). Generally, FBG sensors have a response time of 10 µs compared to the 1 ms response time of piezoresistive pressure sensors [36][37][38]. Thus, FBG sensors can be used for dynamic pressure measurements of high-speed flows with large fluctuations.…”

Section: Wall Static Pressure Measurement Experimentsmentioning

confidence: 99%

Simultaneous measurement of pressure and temperature in a supersonic ejector using FBG sensors

Hegde¹,

Himakar²,

V³

et al. 2022

Meas. Sci. Technol.

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In this work, we have demonstrated the use of Fiber Bragg Grating (FBG) sensors for simultaneous measurement of wall static pressure and temperature in a supersonic ejector. Supersonic ejectors are ground based high speed aerodynamic test facilities characterized by harsh conditions such as high pressure and temperature gradients. FBG based sensor setup was developed consisting of pressure measuring bare FBG and specially designed pressure-insensitive FBG temperature probe that could be mounted on the wall of the supersonic ejector. The FBG temperature probe was used for temperature measurement as well as temperature compensation of pressure measuring FBG sensor. Wall static pressure measurements in the supersonic ejector were carried out at different tank pressures and Mach number flows. The FBG pressure measurements were validated with that of standard piezoresistive based sensor measurements. Both the responses were found to match closely with FBG sensor having a faster response time and higher pressure resolution. Fluid structure interaction simulation was carried out in Comsol Multiphysics to understand the interaction of high speed turbulent flow on the fiber based FBG sensor. The FBG strain profile due to flow-induced stress and its dependence on flow pressure was studied. A detailed analysis of effect of preceding fiber length on FBG pressure measurement was carried out. FBG sensors, owing to their miniature size, ability to withstand harsh environments and multi parameter sensing capability can be used in ground-based aerodynamic test facilities with minimum intrusion to the flow.

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“…In the WDM, the measurement is realized by tracking the shift in the reflected wavelength of the sensor. This approach has been widely used in a range of different sectors such as aerospace [7,8], energy [9,10], and health care [11,12]. The standard approach for strain sensing is through the use of broadband laser, and measurement of the reflected light with an optical spectrum analyzer.…”

Section: Introductionmentioning

confidence: 99%

Developing self-calibrating system for fiber Bragg grating based guided wave sensing under changing temperature conditions

Soman,

Kudela

2024

Smart Mater. Struct.

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Fiber Bragg grating (FBG) sensors have long been thought of as the ideal sensors for structural health monitoring (SHM) due to their small size, light weight, ability to be embedded and ability to be multiplexed. So, FBG sensors have been commonly used for strain based SHM. In recent times, a renewed interest is seen in the use of FBG sensors for guided wave (GW) measurements using the edge filtering approach which increases the sensitivity several folds. They offer several unique opportunities for GW based SHM such as allowing mode filtering, acoustic coupling, etc. Unfortunately, more wide spread research is limited by the steep learning curve. Also, the use of FBG in real applications is still in its infancy due to the need of calibration of the system when the ambient temperature conditions change. This paper precisely tries to address these two shortcomings. For overcoming the steep learning curve, a detailed discussion on the hardware for the FBG based GW sensing is provided. Following the discussion a step-by-step approach is outlined for incorporating the sensors. A detailed trouble-shooting guide is developed based on the immense experience of the authors in this field. This exercise will allow easier adoption of the technique and stimulate more research in the topic. The exercise also allows us to highlight the safeguards and the features that need to be included in the system which will be self-calibrating. Once the design parameters are established a self-calibrating autonomous FBG based sensing system is developed. The developed system is tested in ambient conditions over an extended period in the day capturing the ambient temperature changes. The system is also tested in a larger temperature range (25 ∘C–65 ∘C). The results indicate that indeed the self-calibrating system works effectively. Some sensitivity studies to determine the performance in terms of system reaction time have also been provided. Such a ‘smart’ autonomous system for GW sensing has not been presented to the best of the author’s knowledge and is the key novelty of the presented work. Furthermore, the detailed discussions and troubleshooting guide will help introduce more people to this field of study which will lead to more radical development of the field.

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A Sensitive and Fast Fiber Bragg Grating-Based Investigation of the Biomechanical Dynamics of In Vitro Spinal Cord Injuries

Cited by 12 publications

References 28 publications

Recent advancements of fiber Bragg grating sensors in biomedical application: a review

Recent advancements of fiber Bragg grating sensors in biomedical application: a review

Simultaneous measurement of pressure and temperature in a supersonic ejector using FBG sensors

Developing self-calibrating system for fiber Bragg grating based guided wave sensing under changing temperature conditions

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