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18 April 2022 Measuring acoustic attenuation using temporal and spectral methods
Lukas Peterson, Andrei Zagrai
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Proceedings Volume PC12048, Health Monitoring of Structural and Biological Systems XVI; PC120480X (2022) https://doi.org/10.1117/12.2610718
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States
Abstract
Ultrasonics is a popular technique for active monitoring of structural materials and systems. A wide range of methods exist for ultrasonic testing, but all of them are affected by attenuation in inspected material. The focus of this study is to demonstrate that similar ultrasonic hardware can be used for both temporal and spectral attenuation studies. Attenuation experiments conducted in 1D beams and 2D plates samples demonstrated the validity of temporal and spectral approaches utilizing the same hardware. Recommendations are provided on the applications in which these approaches are more suitable to use.
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Lukas Peterson and Andrei Zagrai "Measuring acoustic attenuation using temporal and spectral methods", Proc. SPIE PC12048, Health Monitoring of Structural and Biological Systems XVI, PC120480X (18 April 2022); https://doi.org/10.1117/12.2610718
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KEYWORDS
Signal attenuation
Sensors
Ultrasonics
Acoustics
Active sensors
Wave propagation
Semiconducting wafers
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