Author(s)

J. Bolosan, T. Oh, E. Elghandour, F. Kolkailah

Abstract

The study and investigation of optimizing sensor location for crack detection J. Bolosan, T. Oh, E. Elghandour, F. Kolkailah Department of Aerospace Engineering, California Polytechnic State University, San Luis Obispo, California, USA Abstract The purpose of this study was to observe the damping characteristics of four different types of structural plates; one homogeneous Aluminum 2024 plate and three composite plates comprised of 977-2 Carbon Fiber/ Epoxy (IM7). The plates were fabricated using a Composite Air Press. The orientations of the plates were: [0/0/90/90]s, [90/0/90/0]s, and [90/90/0/0]s. Natural frequency and bending modes were obtained using a finite element analysis. These results were compared to natural frequency and bending modes of cracked plates of the same structural elements. This paper presents a numerical and experimental approach to find the optimal sensor location to detect the crack. The numerical results indicate that the sensor sensitivity is unaffect

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