Laser and Spectral Diagnostics for Structural Materials: a Review A. Serpengüzel∗ Microphotonics Research Laboratory, Department of Physics, Koç University, Istanbul 34450 Turkey ∗ aserpenguzel@ku.edu.tr Keywords: laser, diagnostics, spectroscopy. Laser and spectral diagnostics are state of the art characterization methods for structural materials [1]. Due to the nature of optics and photonics processes, these diagnostic methods can be applied to the structures in the laboratory, in-situ, or remotely. The application can be passive spectroscopy e.g., emission spectroscopy, such as thermography [2], or active spectroscopy such as laser excited fluorescence [3]. The light delivery system can be free space optics [4] or guided wave optics, e.g., fiber optics [5]. We plan to review current optical spectroscopy methods applied to structural materials for material characterization and structural health diagnostics. References [1] Ali Serpengüzel and Andrew W. Poon, Eds, Optical Processes in Microparticles and Nanostructures, Advanced Series in Applied Physics: Volume 6, World Scientific Press Company, Singapore (2010): 1-488. [2] Otsuka, Yuichi, Hiraku Sugawara, and Yukio Miyashita. Damage Evaluations in Supporting Porous Components Using Infrared Thermography and Acoustic Emission and Their Effects on Loosening Behaviour of Acetabular Cup. Procedia Structural Integrity 28 (2020): 1018-23. [3] Ilyushenko, Valentin, Taras Maydanchuk, Yevheniia Lukianchenko, Sergiy Kozulin, and Sergiy Marynenko. Reasons of Metal Degradation of Copper Chambers of Arc Steelmaking Furnaces during Operation and Possibilities of Their Restorative Repair. Procedia Structural Integrity 36 (2022): 100-105. [4] Häusler, S., R. Fink, C. Benz, and M. Sander. An Investigation of the Residual Stiffness of a Glass Fibre Reinforced Composite in High Cycle Fatigue Experiments. Procedia Structural Integrity 38 (2022): 230-37. [5] Matveenko, Valerii, Natalia Kosheleva, and Grigorii Serovaev. Measurement of Strain and Temperature by Fiber-Optic Sensors Embedded into Samples Manufactured by Additive Technology. Procedia Structural Integrity 42 (2022): 307-14. 98
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