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Three-dimensional integrated fiber Bragg grating accelerometer utilizing resin matrix composites.

Yiming Ma, Chunfang Rao

|March 17, 2026

Summary

This summary is machine-generated.

A novel non-metallic three-dimensional fiber Bragg grating (FBG) accelerometer was developed for high-voltage environments. This fiber Bragg grating accelerometer offers excellent linearity and load capacity, with sensitivities of 65.92, 122.53, and 61.45 pm/g along the x, y, and z axes.

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Area of Science:

Materials Science
Sensor Technology
Mechanical Engineering

Background:

Traditional accelerometers face limitations in high-voltage and strong electromagnetic field environments.
Non-metallic sensors are crucial for ensuring safety and functionality in extreme conditions.

Purpose of the Study:

To develop a three-dimensional fiber Bragg grating (FBG) accelerometer using non-metallic materials.
To enable accelerometer applications in high-voltage or strong electromagnetic field settings.

Main Methods:

Design of an integral inertial mass block with flexible hinges from high-strength resin matrix composites.
Theoretical analyses and optimization for geometric parameters.
Finite-element method simulations and experimental evaluations.

Main Results:

Operational frequency range determined to be 10 to 70 Hz.
Measured sensitivities: 65.92 pm/g (x-axis), 122.53 pm/g (y-axis), and 61.45 pm/g (z-axis).
Demonstrated excellent linearity and load capacity in acceleration response.

Conclusions:

The developed non-metallic FBG accelerometer is suitable for high-voltage and electromagnetic environments.
The sensor exhibits robust performance characteristics for acceleration measurement.