1. Energy Systems: This would encompass thermodynamics and heat transfer, dealing with all aspects of energy storage, conversion, and transfer.
  2. Mechanical Systems: This broader category would include mechanics (statics and dynamics), vibrations, machine design - essentially covering how physical objects and systems respond to forces and motion.
  3. Materials and Manufacturing: This would combine material science with production engineering, covering everything from material properties to how we shape and assemble those materials into products.
  4. Fluids and Flow: Fluid mechanics, including both liquids and gases, and potentially some aspects of heat transfer that involve fluid flow.
  5. Control and Integration: This would encompass control systems, mechatronics, and aspects of robotics - essentially how we make mechanical systems respond intelligently to inputs and environments.