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- W127613426 abstract "In this work, a technique for tomographic image reconstruction in composite materials is described. The approach is based on the observation that, in composites, the nature of the anisotropy is known and the direction variation in material response can be modeled mathematically using micromechanics. With this information, it is possible to modify the tomographic image reconstruction algorithm to account for the intrinsic directional property variations within a sample. To illustrate this process, we treat a test case of a unidirectionally reinforced composite with local variations in the state of cure. Our reconstruction algorithm is based on a modified version of the algebraic reconstruction technique (ART). This is an iterative approach where one begins with a set of initial values and adjusts the value of each pixel in a sequential fashion until there is agreement with the measured wave propagation data. In order to adapt this approach to an anisotropic medium, we linearize the relation between the transit time for a given ray and the unknown moduli in each pixel using a Taylor series expansion. Results have been obtained with simulated and experimental data to explore the utility of the technique." @default.
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- W127613426 date "1991-01-01" @default.
- W127613426 modified "2023-09-26" @default.
- W127613426 title "ULTRASONIC TOMOGRAPHY IN COMPOSITE MATERIALS" @default.
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- W127613426 doi "https://doi.org/10.1016/b978-0-7506-0389-8.50123-2" @default.
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