About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing for Energy Applications V
|
Presentation Title |
Distributed Strain Measurements in Additively Manufactured SS316 with Embedded Fiber-Optic Sensors |
Author(s) |
Holden C. Hyer, Christian Petrie |
On-Site Speaker (Planned) |
Holden C. Hyer |
Abstract Scope |
Fiber-optic sensors are resistant to ionizing radiation and high temperatures (>1,000°C), making them promising candidates for measuring distributed strain in the harsh environments commonly found in energy applications. Site specific strain measurements require that the fiber be properly bonded to the matrix, necessitating embedding the fiber during component manufacturing. Laser powder bed fusion processing accommodates high geometric resolution (<200 µm) and location specific placement of sensors. Therefore, fiber-optic sensors were embedded in SS316, a relevant nuclear material, by carefully controlling the melt pool to properly bond the fiber to the matrix without causing fiber failure. The embedded fiber was interrogated using optical frequency domain reflectometry to determine light attenuation and fiber residual strain. Optical microscopy was performed to confirm the fiber/matrix bonding. Distributed strains in the embedded fiber were accurately recorded during controlled heating to temperatures as high as 1,000°C as compared to thermal expansion modeling of the SS316 matrix. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Nuclear Materials, Iron and Steel |