1 semester

Fundamentals of Mechanisms of Systems (since 2022-23)

Simona Ranieri 1 semester, 3 Year, 9 credits, Subjects
Fundamentals of Mechanisms of Systems (since 2022-23)
3 YEAR 1 semester 9 CREDITS

CECCARELLI MARCO

MATTEO RUSSO

 2022-23
CECCARELLI MARCO

since 2023-24

2024-25 lesson starts on 27 of September 2024
  Code: 8037957 (ex KDM)
Code: 8039957 (FMS)
SSD: ING-IND/13

OBJECTIVES

LEARNING OUTCOMES: The course aims to teach students the knowledge and tools that are needed to address the issues that are related to the identification, modeling, analysis, design of multi-body planar systems, and in particular some transmission organs in English language and terminology

KNOWLEDGE AND UNDERSTANDING: modeling and procedures to recognize the structure and characteristics of mechanisms and machines

APPLYING KNOWLEDGE AND UNDERSTANDING: acquisition of analysis procedures for the understanding of kinematic and dynamic characteristics of mechanisms and machines

MAKING JUDGEMENTS: possibility of judging the functionality of mechanisms and machines with their own qualitative and quantitative assessments

COMMUNICATION SKILLS: learning of technical terminology and procedures for presenting the performance of mechanisms

LEARNING SKILLS: learning of technical terminology and procedures for the presentation of the performance of mechanisms

COURSE SYLLABUS

  • Structure and classification of planar mechanical systems, kinematic modeling, mobility analysis, graphical approaches of kinematics analysis, kinematic analysis with computer-oriented algorithms, fundamentals of mechanism synthesis, trajectory generation; dynamics and statics modeling, graphical approaches of dynamics analysis, dynamic analysis with computer-oriented algorithms, performance evaluation; elements of mechanical transmissions with gears, belts, brakes, and flywheels.

Electromagnetic Fields – (block C)

Simona Ranieri 1 semester, 3 Year, 6 credits, Block C, Subjects
Electromagnetic Fields – (block C)
3 YEAR 1 semester 6 CREDITS
Prof. Cecilia Occhiuzzi

2019-20 to 2023-24

OCCHIUZZI CECILIA (4cfu)

Bianco Giulio Maria (2cfu)

 2023-24
Antonio DI NOIA

since 2024-25
 

Code: 8039513
SSD: ING-INF/02

OBJECTIVES:
This course aims to provide the basic principles and models for the representation of electromagnetic transmission and propagation phenomena up to the description of the most common classes of guiding / radiating elements and of the entire wireless communication link.

KNOWLEDGE AND UNDERSTANDING:
Students will have understood the principles and the mathematical representation of transmission, irradiation, propagation and reception of electromagnetic waves. At the end of the course the student: – will know the basic methodologies of problem analysis described by the Maxwell Equations; – will know the solution of Maxwell’s equations in terms of plane waves and the propagation, reflection and refraction modes of the latter; – will know the behavior of transmission lines and will be able to use the Smith diagram; he will know the basic guiding structures and the relative modalities he will be able to characterize the irradiated field at great distance from electromagnetic sources; – will know the descriptive quantities of the behavior of the antennas both in transmission and in reception; –

ABILITY TO APPLY KNOWLEDGE AND UNDERSTANDING:
Students will be able to interpret the most common phenomena of electromagnetic propagation in free space and in material means. They will be able to understand qualitatively and quantitatively the phenomena and the peculiar characteristics of radiant and basic guiding structures. Thanks to the use of basic CAD and Matlab type calculation software they will be able to directly analyze the different phenomena covered by the course.

AUTONOMY OF JUDGMENT:
Students will acquire the ability to integrate the knowledge provided with those found autonomously by accessing the scientific literature / datasheet of components. The autonomous and guided development of exercises (also in Matlab / CAD electromagnetic base) will complete the training.

COMMUNICATION SKILLS:
Students will be able to illustrate in a synthetic and analytical way all the topics of the course using equations and schemes. They will communicate quantitatively the resolution of exercises and complex problems, also through basic electromagnetic Matlab / CAD.

LEARNING SKILLS:
Students will have acquired the ability to read and understand scientific texts and datasheets in English for further information on the topics covered by the course and for the resolution of the exercises.

 

SYLLABUS

1.Review of vector analysis and complex Algebra
2.Transmission lines: theory and techniques
3. Electrodynamics and Time varying fields.
4.Plane waves.
5.Guided waves.
6. Radiation and antennas.

DETAILS:

1.Fields , field operators and Phasors.
Review of vector analysis.
Scalar and vector fields.
Line and surface integrals.
Differential operators: Gradient, Divergence, Curl, Laplacian.
Complex Algebra and Phasor.

2.Transmission lines.
The Lumped-Circuit theory.
Sinusoidal waves on the ideal lossless line.
Characteristic impedance. Power transmitted by a single wave.
Reflection and transmission.
Transmission lines with losses.
Standing wave ratio.
Impedance.
The Smith chart.
Impedance matching techniques.
Practical transmission lines.

3. Electrodynamics and Time varying fields.
Displacement current. The continuity equation.
Faraday’s law.
Boundary conditions for the tangential electric field.
Maxwell’s equations.
Sinusoidal fields.
The skin effect.
Boundary conditions for good conductors.
Electromagnetic waves. The uniform plane wave.
The quasi-static approximation.

4. Plane waves.
Characteristics of plane waves. Polarization of plane waves.
Poynting’s theorem.
Reflection and transmission at normal incidence.
Reflection and transmission at oblique incidence.
Plane waves in lossy media.

5.Guided waves.
TEM waves in transmission lines.
Hollow metal waveguides. TE waves. The TE10 mode. Waveguide losses.
Cavity resonator
Microstrip

6. Radiation and antennas.
Sources of radiation.
Far field parameters
Near field parameters
The elementary dipole. Directivity and gain.
Array basic

High Performance Electronics – (block B)

Simona Ranieri 1 semester, 3 Year, 6 credits, Block B, Subjects
High Performance Electronics – (block B)
3 YEAR 1 semester 6 CREDITS
Prof. Giancarlo Bartolucci since 2019-20
   
  Code: 8037963
SSD: ING-INF/01

Educational objectives

LEARNING OUTCOMES: the main purpose is to provide methods of analysis and design for high frequency components and circuits.

KNOWLEDGE AND UNDERSTANDING: the student should be able to understand and know the methods of analysis and design studied in the course.

APPLYING KNOWLEDGE AND UNDERSTANDING: the student should be able to apply the models of the studied components to the design of high-frequency circuits.

MAKING JUDGEMENTS: in the mathematical model of a component, the student should be able to find by himself the basic assumptions and the corresponding introduced physical approximations.

COMMUNICATION SKILLS: the student should be able to discuss the topics studied in the course with mathematical rigor and using the proper terms.

LEARNING SKILLS: if necessary, the student should be able to significantly and autonomously increase his knowledge of the topics analyzed in the course.

Prerequisites

The analysis methods of the lumped element networks. The most common devices and circuits used in the low frequency analogue electronics. The theory of transmission lines.

Syllabus

  1. Introduction
  2. Scattering parameters.

Definition in the general case. The lossless case. The two-port network case.

3.Two-port networks.
The ABCD matrix and its properties for the representation of two-port networks. The relationships between the ABCD parameters and the scattering parameters.

  1. Planar realization of lines.
    The microstrip line. The coplanar line. The most widely used discontinuities
    for these two structures.
  2. Realization of microwave integrated circuits.
    The hybrid integrated circuit configuration. The monolithic integrated circuit configuration.
  3. Three-port networks.
    The general theorem for the three-port networks. The Wilkinson divider.
  4. Four-port networks.
    The branch-line divider. The rat-race divider. The coupled-line structure.
  5. Microwave amplifiers.
    Some linear amplifiers: the balanced configuration and the distributed configuration. The non linear effects in power amplifiers, and their memoryless modeling.
  6. Switches.
    The p-i-n diode and the microelectromechanical switches. The single pole single throw (SPST) switch and the single pole double throw (SPDT) switch.
  7. Phase shifters.
    The switched-line configuration. The reflection phase shifter. The loaded line topology. The distributed configuration.

Bibliography

David Pozar, “Microwave Engineering”, Wiley.
S.K.Koul and B.Bhat, “Microwave and Millimetre-wave Phase Shifters vol II”, Artech House 1991.

Machine Design – (block A-D)

Simona Ranieri 1 semester, 3 Year, 9 credits, Block A, Block D, Subjects
Machine Design – (block A-D)
3 YEAR 2 semester 9 CREDITS
   
Luciano CANTONE  since 2019-20
  Code: 8037969
SSD: ING-IND/14

OBJECTIVES

LEARNING OUTCOMES: Designing mechanical components considering the need to save weight, material and energy while respecting safety, to promote the usefulness and social impact of the designed product.
KNOWLEDGE AND UNDERSTANDING: The design of mechanical systems; in particular, basic knowledge of the design methodologies of important machine components.
APPLYING KNOWLEDGE AND UNDERSTANDING: Knowing how to recognise, distinguish and use the main techniques and tools for the design of mechanical components.
MAKING JUDGEMENTS: Students must assume the missing data of a problem and be able to independently formulate basic hypotheses (such as that on safety coefficients) based on the operational and functional context of the system/component they have to design.
COMMUNICATION SKILLS: Transfer information, ideas and solutions to specialist and non-specialist interlocutors through intensive use of English terminology.
LEARNING SKILLS: Students, by learning the basics of design, acquire the tools to learn the necessary design techniques of systems/components not directly addressed during the course.

COURSE SYLLABUS

The first part of the course is addressed to the consolidation of basic knowledge to put the student in the right conditions to face a generic machine design problem: Mechanical Engineering design in Broad, Perspective, Load Analysis, Materials, Static Body Stresses, Elastic strain, Deflection, Stability (Eulerian buckling), Vibrations (beam Eigen-modes), Failure Theories, Safety Factors, Reliability, High cycles Fatigue, Low cycles Fatigue, Surface Damage, Contact and impact problems.

The second part will cover specific design activities: Threaded Fasteners and Power Screws, Rivets, Welding, Bonding, Springs, Lubrication and Sliding Bearings, Rolling-Element Bearings, Spur and Helical Gears, Shafts and Associated Parts. During the course, several design activities will be demonstrated by exercises and by real-life applications.

Fluid Machinery – (block A-D)

Simona Ranieri 1 semester, 3 Year, 6 credits, Block A, Block D, Subjects
Fluid Machinery – (block A-D)
3 YEAR 1 semester 6 CREDITS
   
Roberto VERZICCO – Vincenzo MULONE since 2019-20
  Code: 8037967
SSD: ING-IND/08

LEARNING OUTCOMES: This course aims at providing the fundamentals of fluid dynamics applied to fluid machines. More in detail, it deals with the fluid dynamics equations applied to energy-consuming and energy-producing machines, characterized by both axial and radial flows. It also deals with the understanding of systems connected to fluid machines.

KNOWLEDGE AND UNDERSTANDING: The student will be able to develop simple but useful calculations of fluid machines in terms of flow, work and power, along with solving practical problems of interest. The student will also learn the basics of the control of fluid machines with respect to the flow rate, work exchanged and power output or input The knowledge developed will help the student for both the design of fluid machines and of the systems connected to the machines.

APPLYING KNOWLEDGE AND UNDERSTANDING: The student will apply the knowledge and understanding developed to the analysis of practical problems. This would imply critical knowledge in terms of size and power output/input; the same thing will be done for the systems connected to the machine.

MAKING JUDGEMENTS: The student will have to prove his critical awareness with respect to the simplifying assumptions useful to describe and calculate fluid machines, as well as his critical awareness of the correct order of magnitude of performance parameters while dealing or designing fluid machines.

COMMUNICATION SKILLS: The student will prove, mostly during the oral test, his capacity of describing the operation and functioning of fluid machines, convening of the knowledge developed.

LEARNING SKILLS: The student will get familiar with the schematization of practical problems, mostly during the development of his skills for the written test. This mainly concerns fluid machines (e.g. wind turbines, steam turbines, hydraulic turbines, hydraulic pumps, gas compressors, etc) and the systems connected to the machines (e.g. hydraulic power plants, pumping systems, air distribution systems, etc).

DETAILED SYLLABUS  

Introduction 

Classification of machines. Turbines, compressors, volumetric, rotary machines and their applications to industrial practical cases. Analysis of performance: power, specific work, efficiency.

Basics of fluid mechanics 

Material and spatial description of the flow field. Translation, deformation and rotation. Reynolds’ transport theorem. Principles of conservation and balance (mass, momentum, energy, entropy) in differential form. Mass, momentum, thermal and mechanical energy in stationary and rotating frames of reference. 

Basics of fluid mechanics applied to turbomachinery 

Integral balances in turbomachines (mass, momentum, moment of momentum, energy) and basic applications. 
Gas dynamics equations, speed of sound, Mach number. Applications to nozzles in supersonic conditions, normal shock waves. 

Velocity diagrams coupled to stator and rotor blades for energy producing and consuming machines. Moment of Momentum balance. Energy transfer and different expressions of the Euler work. Trothalpy, degree of reaction, utilization for a turbine. 

Applications 

Scaling and similitude: dimensionless parameters, specific speed and diameter, Cordier curve. Scaling and similitude for compressible flow machines. 

Axial turbines: stage analysis, flow and loading coefficients, reaction ratio, special cases of 0 and 0.5 reaction ratio designs. Off-design operation and performance maps. 

Axial compressors: stage analysis, flow and loading coefficients, reaction ratio. De Haller design criterion and its effect on blade design. Off-design operation and performance maps. 

Centrifugal compressors: analysis of velocity diagrams, effect of blade shape on performance maps, stability and efficiency. Slip factor. Vaneless and vaned diffuser. Flow control (variable speed, IGV and throttling). 

Centrifugal pumps operation into systems: definition of head and volumetric flow rate. Head-flow rate performance map and effects on velocity diagrams, blade design and efficiency. System head curves for simple and multi-branched open-ended and closed-circuit systems. Friction factor and expression of dimensional friction losses. Flow control by variable speed and throttling.  

Cavitation: physical description; effects of system design on cavitation, Net Positive Suction Head, suction specific speed.

TEXTBOOKS AND MATERIAL 

S. Korpela. Principles of Turbomachinery, Wiley 2019. 

Karassik et al., Pump handbook, McGraw Hill. 

Powerpoint slides and videos are available on the MS-team website.