Unit MECHANICAL AND THERMAL MEASUREMENTS
- Course
- Mechanical engineering
- Study-unit Code
- 70091506
- Curriculum
- Generale
- Teacher
- Gianluca Rossi
- Teachers
-
- Gianluca Rossi
- Roberto Marsili (Codocenza)
- Hours
- 42 ore - Gianluca Rossi
- 12 ore (Codocenza) - Roberto Marsili
- CFU
- 6
- Course Regulation
- Coorte 2020
- Offered
- 2022/23
- Learning activities
- Caratterizzante
- Area
- Ingegneria meccanica
- Academic discipline
- ING-IND/12
- Type of study-unit
- Obbligatorio (Required)
- Type of learning activities
- Attività formativa monodisciplinare
- Language of instruction
- Italian
- Contents
- Basic concept of measure and uncertainty.
Static and dynamic characteristics of measurement systems. Signal processing. Measurement techniques and instrumentation for lenght, deformation, velocity, acceleration, vibration, pressure, acoustic, force, moment and mechanical power, flow felocity, flow rate, temperature - Reference texts
- Doebelin - Measurement systems application and design
- Educational objectives
- Capacity to choose measurement sytems, sensors and build correctly measurement chain for mechanical and Thermal measurements.
- Prerequisites
- tipical engineering basis of mathematics and phisics, applied mechnaics, contnuum mechanics
- Teaching methods
- Classroom lessons and laboratory practics
- Learning verification modality
- Oral exam
- Extended program
- Fundamentals on measurement concept
Applications of measurement instruments, fundamental definitions of mesurement and uncertainty, measurement systems generalized configuration, block diagrams of measurement chains, examples.
Characteristics of measurement chains and signal analysis techniques
Static calibration and static characteristics of measurement systems, uncertainty, sensibility, linearity, repeatability, soil, resolution, hysteresis, dead space, input impedence, indirect measurement uncertainty, dynamic characteristics, generalized mathematical models of measurement systems, zero order instruments, first order instruments, second order instruments; response to standard inputs, response to periodical and transient inputs; fundamentals of signal analysis by analogic and digital techniques; frequency analysis; correlation; transfer function; main electronical systems for analogical signal processing in measurement chains. Main software and hardware for data acquisitions and digital signal processing.
Characteristics of measurement chains and signal analysis techniques
Static calibration and static characteristics of measurement systems, uncertainty, sensibility, linearity, repeatability, soil, resolution, hysteresis, dead space, input impedence, indirect measurement uncertainty, dynamic characteristics, generalized mathematical models of measurement systems, zero order instruments, first order instruments, second order instruments; response to standard inputs, response to periodical and transient inputs; fundamentals of signal analysis by analogic and digital techniques; frequency analysis; correlation; transfer function; main electronical systems for analogical signal processing in measurement chains. Main software and hardware for data acquisitions and digital signal processing.
Most common measurement instrumentation for mechanical and thermal measurements
Measurement instrumentation and sensors for length, displacement, motion, and deformation measurements; velocity of fluids; flow rate; forces; pressure; acustic noise; temperature and heat flux. For each mechanical and thermal quantity to be measured the definition, calibration techniques and main instruments that can be used are illustrated.
Laboratory sessions
Pratical static and dynamic calibration of transucers for displacement, strain, accelerometers, pressure, microphone, load cells, flow rate, anemometer, termocouple, etc
Use of oscilloscope, spectrum analyser, digital data acquisition and processing system based on personal computers.