Print Email Facebook Twitter Simulation of ultrasonic array inspection of composites with side drilled holes Title Simulation of ultrasonic array inspection of composites with side drilled holes Author Anand, C. (TU Delft Structural Integrity & Composites) Groves, R.M. (TU Delft Structural Integrity & Composites) Shroff, S. (TU Delft Aerospace Structures & Computational Mechanics) Benedictus, R. (TU Delft Structural Integrity & Composites) Date 2020 Abstract In this paper we ultrasonic signals from array transducers are simulated using the Thompson and Gray measurement model. The measurement model consists of a beam model, a system efficiency factor which characterizes the response of the electro-mechanical and electrical components of the system, and a flaw scattering model. To inspect layered composite structures with complex geometries such as curvature, a beam model which is non-singular is required. Hence a multi Gaussian beam model for an ultrasonic array which includes the slowness surface parameters for unidirectional CFRP is investigated. The system functions of the ultrasonic array are modelled using a system efficiency model for a rectangular array. The Kirchoff approximation and separation of variables method for far field scattering in anisotropic materials is used to model the far field response of scatterers such as side drilled holes (SDH) in unidirectional CFRP. In summary the ultrasonic measurement model developed is able to predict the signals from scatterers such as side drilled holes (SDH) in transversely isotropic CFRP. Subject CompositePhased arraySide drilled holeSimulationUltrasonic To reference this document use: http://resolver.tudelft.nl/uuid:e0a0eb51-7ee4-46cf-8e93-b05e010b314f Publisher Applied Mechanics Laboratory ISBN 9781510896932 Source ECCM 2018 - 18th European Conference on Composite Materials Event ECCM18: 18th European Conference on Composite Materials, 2018-06-24 → 2018-06-28, Athens, Greece Series ECCM 2018 - 18th European Conference on Composite Materials Part of collection Institutional Repository Document type conference paper Rights © 2020 C. Anand, R.M. Groves, S. Shroff, R. Benedictus Files PDF 3feffe22cd9543b2b71a8b3b3 ... ab8b9a.pdf 623.42 KB Close viewer /islandora/object/uuid:e0a0eb51-7ee4-46cf-8e93-b05e010b314f/datastream/OBJ/view