Display options
Cite
Hsu PS, Rein K, Oleksandr B, et al. Fiber-coupled LWIR hyperspectral sensor suite for non-contact component surface temperature measurements. Appl Opt. 2018;57(36):10418-10425doi: 10.1364/AO.57.010418.
Hsu, P. S., Rein, K., Oleksandr, B., Wu, D., Cook, T. S., Adhikari, S., Emerson, B., Lieuwen, T., Gord, J. R., & Roy, S. (2018). Fiber-coupled LWIR hyperspectral sensor suite for non-contact component surface temperature measurements. Applied optics, 57(36), 10418-10425. https://doi.org/10.1364/AO.57.010418
Hsu, Paul S, et al. "Fiber-coupled LWIR hyperspectral sensor suite for non-contact component surface temperature measurements." Applied optics vol. 57,36 (2018): 10418-10425. doi: https://doi.org/10.1364/AO.57.010418
Hsu PS, Rein K, Oleksandr B, Wu D, Cook TS, Adhikari S, Emerson B, Lieuwen T, Gord JR, Roy S. Fiber-coupled LWIR hyperspectral sensor suite for non-contact component surface temperature measurements. Appl Opt. 2018 Dec 20;57(36):10418-10425. doi: 10.1364/AO.57.010418. PMID: 30645393.
Copy Download .nbib Format: NLM
Share it on

Appl Opt. 2018 Dec 20;57(36):10418-10425. doi: 10.1364/AO.57.010418.

Fiber-coupled LWIR hyperspectral sensor suite for non-contact component surface temperature measurements.

Applied optics

Paul S Hsu, Keith Rein, Bibik Oleksandr, David Wu, Timothy S Cook, Subodh Adhikari, Benjamin Emerson, Timothy Lieuwen, James R Gord, Sukesh Roy

PMID: 30645393 DOI: 10.1364/AO.57.010418

Abstract

We report on the development of a robust fiber-coupled long-wavelength infrared (LWIR) hyperspectral sensor suite for accurate and reliable non-contact surface temperature measurements in propulsion systems with limited optical access. We first experimentally investigate various state-of-the-art LWIR optical fibers and identify the ideal fiber for efficient coupling and transmission of LWIR signals. The effects of the fiber material, structure, bending, and thermal heating on LWIR fiber transmission are characterized. Subsequently, we discuss the development of a fiber-coupled LWIR hyperspectral sensor using a multi-mode polycrystalline fiber. The temperature measurement accuracy and precision of the sensor are determined using a well-calibrated blackbody radiation source and heated thermal barrier coating. The sensor is integrated into a homemade water-cooled probe housing and environmental protection box and subsequently used for reliable combustor liner temperature measurements in a high-pressure, liquid-fueled combustor rig with no built-in optical access. We also discuss the measurement challenges associated with flame interference and potential solutions. The LWIR sensor shows significant promise in its application to surface temperature measurements, and our findings can aid propulsion system engineers and researchers in system design and operation optimization.

Publication Types