This paper proposes a new approach to detecting bolts' anchoring qualities based on the fiber Bragg grating sensing principle. Basically, Fiber Optic Bragg Sensors are strain-measuring devices and therefore provide many of the advantages of the well known metal foil strain gages. This paper gives a short introduction to FBG sensors, points out their special strengths and weaknesses and describes a measuring system which.
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Fiber Bragg gratings are reflective structures in the core of an optical fiber with a periodic or aperiodic perturbation of the effective refractive index.
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Acoustic emission detection is widely employed in the field of material health monitoring as an important non-destructive testing method.
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In recent years, fiber optic sensors, primarily based on fiber Bragg gratings (FBGs), have been gradually applied in the monitoring of electrical equipment.
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Sensitivity and mechanical properties are the key factors that affect the performance of strain-sensitive etched fiber Bragg grating (EFBG) sensors.
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