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Embedded Optical Fibre with Fibre Bragg Grating Influence on Additive Manufactured Polymeric Structure Durability.

Magdalena Mieloszyk¹, Katarzyna Majewska¹, Artur Andrearczyk¹

¹Institute of Fluid Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-231 Gdansk, Poland.

Materials (Basel, Switzerland)

|April 12, 2022

Summary

Embedded fiber Bragg grating (FBG) sensors do not affect the mechanical durability of additive manufacturing (AM) polymers. This study analyzed two AM polymers, M3 X and M3 Crystal, under thermal and tensile loading, finding no significant impact from sensor integration.

Keywords:

additive manufacturing fibre Bragg grating sensor polymer tensile strength

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Area of Science:

Materials Science
Polymer Engineering
Sensor Technology

Background:

Additive manufacturing (AM) enables complex polymer component fabrication for industrial applications.
Fiber Bragg grating (FBG) sensors are crucial for structural health monitoring (SHM).
Investigating the impact of integrated FBG sensors on AM polymer durability is essential for reliable SHM systems.

Purpose of the Study:

To analyze the influence of embedded FBG sensors on the mechanical durability of AM polymer elements.
To compare the thermal and mechanical responses of two different AM polymers (M3 X and M3 Crystal) with and without embedded FBG sensors.
To validate FBG sensor strain measurements against traditional testing machine data.

Main Methods:

Fabrication of AM polymer samples with embedded and surface-attached FBG sensors.
Thermal loading tests (elevated and sub-zero temperatures) to determine strain-temperature relationships.
Tensile testing to compare the mechanical strength of samples with and without FBG sensors.

Main Results:

FBG sensors showed good agreement with testing machine strain measurements, particularly for M3 X polymer.
Thermal loading revealed distinct strain-temperature responses for M3 X and M3 Crystal polymers.
No significant differences in tensile strength or failure mechanisms were observed between samples with and without embedded FBG sensors.

Conclusions:

Embedded FBG sensors do not negatively impact the mechanical durability of the analyzed additive manufacturing polymers.
The study provides valuable data on the thermal and mechanical behavior of AM polymers with integrated sensors.
FBG sensors are suitable for SHM applications in AM polymer structures without compromising material integrity.