Life Cycle Monitoring of Curved Composite Parts Using Embedded Fiber Bragg Grating Sensors

Nobuo Takeda; Shu Minakuchi; Takahide Umehara; Ito Yusaku

doi:10.4028/www.scientific.net/AMR.410.18

Paper Titles

Preface

Influence of Carbon Nanotubes and Processing on Cyclic Fatigue and Final Fracture Behavior of a Magnesium Alloy
p.3

Potential Composite Structures for NASA Future Launch Vehicles and Crew Spacecraft
p.17

Life Cycle Monitoring of Curved Composite Parts Using Embedded Fiber Bragg Grating Sensors
p.18

Multifunctional Nanomaterials for Alternative Energy
p.22

Grading of Biofibres for Use in Natural Fibre Composites
p.23

Plant Fiber Reinforced Composites and their Applications
p.24

Multi-Functional Soft Smart Materials and their Applications
p.25

Electrospun Nanofibre Cores Containing Graphene Oxide for Sandwich Films: Manufacturing and Analysis
p.26

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Life Cycle Monitoring of Curved Composite Parts Using Embedded Fiber Bragg Grating Sensors

Abstract:

This study demonstrated fiber-optic-based life cycle monitoring of an L-shaped carbon fiber reinforced plastic (CFRP) part. Fiber Bragg grating (FBG) sensors were embedded in the corner of the L-shaped specimen during the laminate lay-up process, and was then utilized to monitor the local strain change during the cure process, the demolding, the assembly, and a subsequent bending test. FBG spectral changes induced were comprehensively presented and discussed from the viewpoint of the mechanical and thermal deformation of the specimen. Internal state of the L-shaped part was successfully monitored throughout its life, confirming effectiveness of life cycle monitoring by embedded fiber-optic-based sensors for developing highly-reliable composite structures.