Modeling and Optimization of Laser Cladding Fixation Process for Optical Fiber Sensors in Harsh Environments

In order to overcome the shortcomings of the poor shear resistance of the bare optical fiber whose coating layer falls off due to harsh conditions, such as on aero-engines and the marine environment, the coaxial powder feeding laser cladding method (CPFLCM) is proposed to connect the optical fiber s...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2022-03, Vol.22 (7), p.2569
Main Authors: Yang, Caixia, Tan, Yuegang, Liu, Yi, Xia, Ping, Cui, Yinghao, Zheng, Bo
Format: Article
Language:English
Subjects:
Analysis
Coatings
Energy
energy attenuation
Equipment and supplies
fiber optic sensor
Fiber optics
Gratings (spectra)
High temperature
Laser beam cladding
laser cladding
Lasers
Marine environment
numerical simulation
Oceans
Optical fibers
powder concentration
Powders
Radiation
Sensors
Shear strength
Temperature distribution
Temperature sensors
Transmission loss
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Summary:In order to overcome the shortcomings of the poor shear resistance of the bare optical fiber whose coating layer falls off due to harsh conditions, such as on aero-engines and the marine environment, the coaxial powder feeding laser cladding method (CPFLCM) is proposed to connect the optical fiber sensor and the substrate. The concentration field model of the powder flow is established in sections, the effective number model of particles and the corresponding laser attenuation rate are obtained. Through simulation, the influence of relevant parameters of laser cladding on the temperature field was analyzed, and the accurate parameters of laser cladding were optimized. Finally, the temperature rise trajectory of the substrate temperature field was verified by using the fiber grating temperature sensor. Through experiments, the quality of the molten pool and the optical transmission loss of the optical fiber sensor were analyzed, and the consistency of the simulation optimization parameters was verified. Through this paper, it can be concluded that the proposed CPFLCM can realize the effective connection of the optical fiber sensor to the substrate. It is of great significance in the application of optical fiber sensors in harsh environments of oceans and aerospace.
ISSN:1424-8220
1424-8220
DOI:10.3390/s22072569