Romesh Nagarajah

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Non-destructive testing using ultrasonic measurement is used to ensure the quality of the die-casting products. The quality of a casting depends on the presence of discontinuities such as porosity and on the final metallurgical structure. Discontinuities occurring in the sub-surface of the cast structure mostly have irregular surfaces which scatter the(More)
Cold spray is a unique coating technology that allows for solid state deposition of particles under atmospheric pressure. In this paper, a three dimensional, Computational Fluid Dynamics (CFD) multicomponent model is developed to estimate cold spray gas conditions involving both nitrogen and air. Calibration of the model followed by validation is(More)
A novel control approach using multiple-adaptive fuzzy systems with switching for solving integrated lateral and longitudinal control of highway vehicle systems for improved transient response, is presented in this paper. The most suitable adaptive controller of the multiple-adaptive fuzzy system is switched depending on the suitable operating conditions.(More)
A novel approach using multiple-adaptive fuzzy systems in a fuzzy PDC (Parallel Distributed Compensation) based structure for integrated lateral and longitudinal control of highway vehicles for improved transient response, is presented in this paper. For comparison studies a single-adaptive fuzzy controller synthesis is also presented. These fuzzy setups(More)
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