The aim of the course is to provide the basic knowledge for less common mechanical measurements
Concept of mean measurement and variance. Errors, classification propagation in the measurement chains.
Digital sampling. Power spectra. Autocorrelation of signals. Analog and digital filters. Basic measures and concepts of performance verification up to testing.
Theory and design for mechanical measurements", R.S. Figliola, D.E. Beasley, John Wiley & Sons, 1991
"Fundamentals of temperature, pressure and flow measurements", R.P. Benedict, A Wiley-Interscience Publication John Wiley & Sons, 1984
"Fluid Mechanics Measurements", R.J. Goldstein, Hemisphere publishing corporation, 1983
"Strumenti e metodi di misura", E. O. Doeblin, Mc GRAW-HILL INTERNATIONAL EDITIONS
"Measurment System - Application and design", E. O. Doeblin, Mc GRAW-HILL INTERNATIONAL EDITIONS
"Measurements techniques in fluid dynamics – An Introduction", Annual Lecture series, Von Karman Institute for Fluid Dynamics
Dally, "Experimental stress analysis", College House Enterprises, 2005.
The aim of the course is to provide the basic knowledge for less common mechanical measurements.
increase the ability to carry out advanced measures in the machines applying knowledge and understanding to identify and quantify problems. Formulate solutions in the field of mechanical engineering, to set up the control of structures and machines but also to design, implement and test.
Understand how performance can be verified and systems can be improved, innovating the same also through the development and improvement of measurement and control methods, in the field of mechanical engineering.
Achieve adequate preparation to develop systems and further deepen knowledge and skills in research.
CA6: Define, design and manage experimental activities related to machines components, industrial plants and energy conversion systems
CA9: Ability of combining theory and practice to solve multidisciplinary engineering problems
CC1: In-depth knowledge in the field of energy and electricity
CC7: Measurement of operating parameters, performance and emissions of components and energy conversion systems: standard and advanced techniques and technologies. Measurement chains, instruments and techniques for the detection of the most important thermofluid-dynamic parameters, instrumental uncertainties and propagation
Notions of Concept of mean measurement and variance. Errors, classification and propagation in the measurement chains.
Digital sampling. Power spectra. Autocorrelation of signals. Analog and digital filters. Basic measures and concepts of performance verification up to testing
the course is mainly dealt with through lectures, leaving some space for some laboratory experience to better understand the use of advanced instruments.
The student will have to demonstrate to be able to apply concepts, methods and models dealt with in the basic measures courses as well as those acquired during the course in real time to the advanced measures aimed at verifying the performance of machine components and the verification of what it happens in them. He will then have to demonstrate through the laboratory activities and the questions to have acquired a good knowledge of the topics of the course as well as the mastery in dealing with problems of non-standard measures. The exam involves the acquisition of multidisciplinary skills related to the application of measurement and control systems. The multiplicity of applications is deliberately exploited to stimulate the student to understand how different specific solutions are possible, sometimes even different in different application areas. We also try to highlight how the mechanical and electromechanical and above all fundamental physical knowledge can help to understand and measure the effects in different fields. The idea is to guarantee the student not only a wealth of up-to-date and professionally useful knowledge, but also a method to approach the problem of verification.
Type of Assessment
An applicative LAB-activity is required that foresees the execution of a measurement experience in the laboratory or of interpretation of measures and related elaboration to be carried out normally in groups. The use of advanced instrumentation, interpretation of results and development of instrument components is envisaged.
The elaborate is the subject of discussion during a final oral examination which is divided into the following parts:
1) presentation and discussion of the artist (ten to fifteen minutes)
2) Next oral exam 25-30 minutes (two "theoretical" questions taken from the program, not in the same field of laboratory activities carried out)
The total duration of the oral exam is about 40-45 minutes
This is a course in which the basis for advanced measures is laid. In fact, topics related to non-traditional and advanced measures are discussed.
In particular, non-intrusive measurement systems are analyzed both for temperature measurements (radiometric systems) and for the motion fields (LDV and PIV systems).
The problems connected with the dynamic signals and the techniques / modalities of interpretation of the results are addressed.
problems, systems and methods of use and calibration. Applications
Radiometric systems: temperature measurements using non-intrusive methods (optical pyrometry) theory and applications.
AEROACUSTICS: details of acoustic measurements and analysis systems for interprefying physical phenomena.
Laser Doppler Velocimetry (LDV): Speed measurements with laser methods, problems of reconstruction of motion fields and synchronization of measurements, descriptive techniques of turbulence.
Particle Imaging Velocimetry (PIV): Measurements of velocity, turbulence, fields of motion of synchronized phenomena, problems and applications.
extraction of qualitative and non-image information and image visualization techniques. Pressure PAINT and Liguid CRISTAL for pressure and temperature measurement.temperature (Pyrometers)