3D Printing of a miniature turbine blade model with an embedded fibre Bragg grating sensor for high-temperature monitoring. Issue 2 (3rd April 2022)

• Record Type: Journal Article
• Authors: Kim, Seon Il; Jung, Ho Yun; Yang, Seungweon; Yoon, Jongcheon; Lee, Hyub; Ryu, WonHyoung
• Is Part Of: Virtual and physical prototyping. Volume 17:Issue 2(2022)
• Page Start: 156
• Page End: 169
• Publication Date: 2022-04-03
• Subjects: 3D printing -- fibre Bragg grating sensor -- directed energy deposition -- turbine blade -- temperature monitoring; Rapid prototyping -- Periodicals; Virtual computer systems -- Periodicals; Prototypes, Engineering -- Periodicals; Production engineering -- Periodicals; Design, Industrial -- Periodicals; 670.285
• DOI: 10.1080/17452759.2021.2017545
• Languages: English
• ISSNs: 1745-2759

Abstract

ABSTRACT: Rapid advances in 3D printing enable the construction of complex metal structures. However, sensor embedding within 3D printed metal structures has been challenging due to its extremely high-temperature condition. Here, we embedded an optical fibre sensor for temperature monitoring within a Ni-alloy miniature turbine blade by directed energy deposition (DED) printing. To endure the high-temperature condition, a fibre Bragg grating (FBG) sensor was electroplated with a Ni layer, and various 3D printing parameters were optimised. In particular, to minimise the accumulation of thermal energy in the FBG sensor, 'line-by-line printing and stop' process was applied around the sensor. The embedded sensor accurately measured temperature cycling up to 500°C with the sensitivities of 28.3 and 27.2 pm/K in heating and cooling cycles, respectively. Finally, an FBG sensor was successfully embedded in a miniature turbine blade by our DED process, demonstrating its feasibility for high-temperature monitoring.