Usage of fiber Bragg grating sensors in low earth orbit environment

Sang-Oh Park; Jin-Bum Moon; Yoen-Gwan Lee; Chun-Gon Kim; Shantanu Bhowmik

doi:10.1117/12.776631

8 April 2008 Usage of fiber Bragg grating sensors in low earth orbit environment

Sang-Oh Park, Jin-Bum Moon, Yoen-Gwan Lee, Chun-Gon Kim, Shantanu Bhowmik

Proceedings Volume 6932, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008; 69321T (2008) https://doi.org/10.1117/12.776631
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2008, San Diego, California, United States

Abstract

It is widely known that materials exposed to the severe low earth orbit (LEO) environment undergo degradations. For the evaluation of fiber Bragg grating (FBG) sensors in the LEO environment, the reflective spectrum change and the Bragg wavelength shift of FBG sensor were measured during aging cycles simulating the LEO environment. The LEO environment was simulated by high vacuum (~10^-5 Torr), ultraviolet (UV) radiation (<200nm wavelength), temperature cycling (-30°C~100°C), and atomic oxygen atmosphere (AO flux of 9.12×10¹⁴ atoms/cm²/s and kinetic energy of ~0.04 eV). FBG sensor arrays were embedded into the graphite/epoxy composite material. Through the aging cycles simulated for the LEO environment, the change in the reflective spectrums and the Bragg wavelengths from FBG sensors were investigated.

Citation Download Citation

Sang-Oh Park, Jin-Bum Moon, Yoen-Gwan Lee, Chun-Gon Kim, and Shantanu Bhowmik "Usage of fiber Bragg grating sensors in low earth orbit environment", Proc. SPIE 6932, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008, 69321T (8 April 2008); https://doi.org/10.1117/12.776631

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