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Browsing by Author "Ramatlo, Dineo AM"

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Comparison between SAFE forced response and Abaqus/Explicit solutions of a rail excited at a cut-frequency

Author: Long, Craig S ; Ramatlo, Dineo AM ; Loveday, Philip W Date: Sep 2018 In this paper, we present a comparison between two different methods for modelling the response of an elastic waveguide to a point force excitation. Read more
Development of an optimal piezoelectric transducer to excite guided waves in a rail web

Author: Ramatlo, Dineo AM ; Wilke, DN ; Loveday, Philip W Date: Apr 2018 Ultrasonic transducers have demonstrated the ability to effectively excite guided waves that can propagate over long distances and are thus employed in monitoring systems. An ultrasonic piezoelectric transducer that strongly excites a mode ... Read more
Estimation of probability of defect detection by combining simulated defect signatures with measured ultrasonic guided wave signals

Author: Ramatlo, Dineo AM ; Loveday, Philip W ; Long, Craig S ; Wilke, DN Date: Sep 2018 Continuously welded heavy haul railway lines experience very large stresses due to high axle loads and varying environmental conditions. Read more
Mode repulsion of ultrasonic guided waves in rails

Author: Loveday, Philip W ; Long, Craig S ; Ramatlo, Dineo AM Date: Mar 2018 Accurate computation of dispersion characteristics of guided waves in rails is important during the development of inspection and monitoring systems. Wavenumber versus frequency curves computed by the semi-analytical finite element method ... Read more
Numerical verification of an efficient coupled SAFE-3D FE analysis for guided wave ultrasound excitation

Author: Long, Craig S ; Loveday, Philip W ; Ramatlo, Dineo AM ; Andhavarapu, EV Date: Sep 2018 Numerical verification of a method to simulate piezoelectric transducers exciting infinite elastic waveguides is presented. The method, referred to as SAFE-3D, combines a 3D finite element (FE) model of a transducer with a 2D semi-analytical ... Read more
Temperature compensation for ultrasonic guided wave measurements

Author: Dhuness, Kahesh ; Ramatlo, Dineo AM ; Long, Craig S ; Loveday, Philip W Date: Sep 2018 Guided wave ultrasound is an increasingly popular non-destructive testing method for inspecting and monitoring elongated elastic waveguides, such as pipe and rail. Read more

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Browsing by Author "Ramatlo, Dineo AM"

Browsing by Author "Ramatlo, Dineo AM"

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