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College of Liberal Arts and Sciences | Mathematics

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November 19, 2018 | 2:45 p.m. - 4:00 p.m.
Category: Lecture
Location: Faculty/Administration #1140 | Map
656 W. Kirby
Detroit, MI 48202
Cost: Free

Speaker: Richard Uber, Air Force Institute of Technology

Modeling Acoustic Wave Scattering from imperfections in thin plates

Structural health monitoring currently uses three principle methods for damage detection. Comparative vacuum monitoring (CVM), Fiber Bragg grating (FBG), and Piezo-electric wafer active sensors (PWAS).  For aircraft use, PWAS has been shown to be the most promising technology for distributed sensing. In order to mature the bring the technology to application, several hurdles must be overcome. Among those is to fully understand the nature of scattered signals from the damage these sensors are designed to sense.
In this talk, I will briefly discuss the current state of the art for structural health monitoring on aircraft, then describe one method currently employed for modeling acoustic scattering from cracks - the combined analytical FEM approach (CAFA). The talk will conclude with a discussion of results from a recent statistical test used to determine significant factors for the sensing system.

For more information about this event, please contact Department of Mathematics at 3135772479 or