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Department of Engineering Sciences

Research and R&D activities at the Department of Engineering Sciences are carried out within two main categories:

  • Material and Structural Studies to Improve the Operational Efficiency of Ships
  • Diagnostics and Analysis of Marine Structures and Equipment

Material and Structural Studies to Improve the Operational Efficiency of Ships

Research focuses on developing and analysing advanced materials, structures, and technologies that enhance ship performance and durability.

  • Hydrodynamic theory of lubrication: Analytical and numerical modelling of velocity, pressure and temperature distributions in journal and micro-bearings under various lubrication conditions, including non-Newtonian fluids and ferrofluids. The models account for groove geometry on bearing surfaces (micrometer-scale grooves) and their influence on the lubrication gap height. Both steady and unsteady laminar flows are considered, with viscosity variations dependent on pressure, temperature, shear rate, operating time, and magnetic fields.
  • Dynamics and strength of marine structures: Numerical analysis of thermal deformation in ship engines and hulls, and development of new non-destructive testing and structural health monitoring (SHM) methods for welded thin-walled structures.
  • Hydraulic systems: Studies aimed at reducing energy losses and improving efficiency in hydrostatic drive systems through laboratory testing and energy analysis.
  • Reliability of heat exchangers: Multidisciplinary research on the design and operation of heat exchangers (mainly steam turbine condensers), covering heat transfer, fluid mechanics, material strength, reliability theory, and economic analysis. Investigations include flow resistance, thermal stress, fouling, corrosion, and erosion processes, with a focus on optimizing energy efficiency and operational reliability.
  • Recycling of polyester-glass waste: Development of technologies for processing polyester–glass waste into new composite materials and testing their static, dynamic, and corrosion properties. Novel testing setups were developed for corrosion resistance in salt fog and seawater environments.

Diagnostics and Analysis of Marine Structures and Equipment

  • This research area focuses on diagnostic methodologies and system analysis for marine applications.
  • Measurement of knowledge using intuitionistic fuzzy sets: Development of hybrid probabilistic, neural, and fuzzy-neural methods to model and estimate risk in ship propulsion systems based on expert assessments. Development of hybrid methods combining probabilistic, neural, fuzzy-neural, and analytic hierarchy process (AHP) techniques, including intuitionistic fuzzy AHP. These methods are applied to risk estimation in ship propulsion systems based on expert assessments, enabling more nuanced and reliable decision-making under uncertainty.