Cure monitoring and mechanical testing of composite materials with embedded microstructured optical fiber Bragg grating sensors

Sidney Goossens; Miguel Jiménez; Evangelos Karachalios; Francis Berghmans

doi:10.1117/12.3022491

20 June 2024 Cure monitoring and mechanical testing of composite materials with embedded microstructured optical fiber Bragg grating sensors

Sidney Goossens, Miguel Jiménez, Evangelos Karachalios, Francis Berghmans

Author Affiliations +

Proceedings Volume 12999, Optical Sensing and Detection VIII; 1299908 (2024) https://doi.org/10.1117/12.3022491
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Composite materials are increasingly used in aerospace structures, because of their superior stiffness-to-mass ratio. Due to their ply-stacking nature, they show excellent mechanical performance in the in-plane directions but are much weaker in the out-of-plane direction. Manufacturers and end-users are therefore keen to acquire strength information along that direction. Here, we report on the measurement of three-dimensional strain using fibre Bragg gratings (FBGs) in highly birefringent (HiBi) microstructured optical fibers (MOFs).

By combining two MOF-based FBG sensors, we demonstrated three-dimensional strain-based monitoring of the curing of a fiber reinforced composite subcomponent manufactured by a resin transfer molding (RTM) technique. We also investigated the influence of the presence of the embedded fibers by embedding the MOF in composite coupons manufactured by liquid resin infusion (LRI) and performing a multitude of mechanical tests with these coupons and comparing the mechanical resistance to pristine coupons. It is also the first time that such a comparison has been carried out for this specific combination of optical fiber and composite material system.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Sidney Goossens, Miguel Jiménez, Evangelos Karachalios, and Francis Berghmans "Cure monitoring and mechanical testing of composite materials with embedded microstructured optical fiber Bragg grating sensors", Proc. SPIE 12999, Optical Sensing and Detection VIII, 1299908 (20 June 2024); https://doi.org/10.1117/12.3022491

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available