A technique to package Fiber Bragg Grating Sensors for Strain and Temperature Measurements

Dreyer, Uilian José; Sousa, Kleiton de Morais; Somenzi, Jonas; Lourenço, Ivo de; Silva, Jean Carlos Cardozo da; Oliveira, Valmir de; Kalinowski, Hypolito José

doi:10.1590/s2179-10742013000200031

Cited by 13 publications

(5 citation statements)

References 17 publications

(14 reference statements)

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“…Environmental factors such as fire protection, electricity, heat and excessive humidity, debris, dirt or dust should be monitored and controlled through contingency planning to minimize the risk and unnecessary disruption of services and business. [4] . Arduino GSM Shield 2 allows an Arduino card to have internet access and to send text and make phone calls from an operator chip.…”

Section: Methodsmentioning

confidence: 99%

Design for Real Temperature and Moisture Analysis on Battery Bank and Nobreak

Nunes¹,

Souza²,

Silva³

et al. 2019

IJAERS

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Keeping track of the temperature and humidity of the nobreaks and battery bank locations helps to prevent loss of equipment life. Although equipment that makes measurements and controls on site is currently available, it is difficult to use techniques for temperature and humidity control in real time. This article implements and describes a temperature and humidity meter along with an automation system for real time verification of the nobreak and battery bank for industrial use. This design is used as an important tool in temperature monitoring with the purpose of avoiding the reduction of equipment life causing higher maintenance costs. Temperature and humidity meters were used to carry out the project, an arduino responsible for sending the data captured by the sensors to the database, and a web system that shows the data sent by the arduino in real time. The data obtained through the developed prototype were verified and compared in order to observe possible temperature changes in industrial environment. The measurements were compared to the temperatures indicated by the product manufacturer. With this it was attested that the prototype stored the temperature and humidity data and subsequently sent it to the web system correctly allowing thus a real time analysis of the temperature and humidity in which the equipment is submitted.

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Section: Methodsmentioning

confidence: 99%

Design for Real Temperature and Moisture Analysis on Battery Bank and Nobreak

Nunes¹,

Souza²,

Silva³

et al. 2019

IJAERS

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show abstract

“…To address the bonding issue, techniques such as sensor encapsulation [35] or embedding FBGs during composite manufacturing [21] can be employed. Furthermore, these techniques provide robustness to the sensor thereby making it suitable for in situ monitoring.…”

Section: Practical Challengesmentioning

confidence: 99%

“…Nevertheless, in practical applications the temperature fluctuations are typically in the range of <1 kHz and can be easily filtered out from the desired ultrasonic frequency range of 100 kHz-1 MHz typically used for SHM applications. In addition, the temperature and strain can also be discriminated and monitored separately using special FBG encapsulations [35].…”

Section: Practical Challengesmentioning

confidence: 99%

Fiber bragg grating based detection of part-thickness cracks in bent composite laminates using feature-guided waves

Ray

Fan

et al. 2019

Smart Mater. Struct.

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Composite structures with bends are widely used in aerospace and industrial sectors. However health monitoring of such structures is challenging due to their complex topographical features. Recent literature shows that bends in composite laminates can confine and guide ultrasonic energy along their length, known as feature-guided waves (FGW). This article demonstrates a fiber Bragg grating based technique using FGW modes for defect detection and identification in bent composite laminates. In addition, the effects of defect depth and excitation frequency on the FGW mode reflection coefficient are reported using 3D finite element simulations. Physical insight into the reflection behavior is discussed based on an analysis of mode interaction with part-thickness cracks.

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“…Unlike FBG sensors traditional installations (embedded in structures of bridges, dams, tunnels, etc) where the influence of external disturbances such as the thermal gradient across the installation are avoided [6], the FBG sensors used for rotor temperature monitoring installed at rotor pole surface form a three layer composite. One of the composite is a thermal adhesive to fix the sensor to winding surface, the sensor itself with its packaging and an additional protective silicone layer.…”

Section: Analysis Of Thermo-mechanical Stress Inmentioning

confidence: 99%