Unit ALGORITHMS FOR NONDESTRUCTIVE TESTING
- Course
- Sustainable materials and processes engineering
- Study-unit Code
- A002470
- Curriculum
- Materiali per l'aerospazio
- Teacher
- Pietro Burrascano
- Teachers
-
- Pietro Burrascano
- Hours
- 90 ore - Pietro Burrascano
- CFU
- 9
- Course Regulation
- Coorte 2021
- Offered
- 2022/23
- Learning activities
- Affine/integrativa
- Area
- Attività formative affini o integrative
- Academic discipline
- ING-IND/31
- Type of study-unit
- Obbligatorio (Required)
- Type of learning activities
- Attività formativa monodisciplinare
- Language of instruction
- Italian
- Contents
- Theoretical foundations of Digital Signal Processing techniques: theory and implementation techniques of algorithms for non-destructive diagnostics of materials.
Practical examples of applications. - Reference texts
- Teaching materials prepared by the teacher.
Optional text (in Italian)
Alessandro Falaschi:
Trasmissione dei segnali e sistemi di Telecomunicazione.
https://teoriadeisegnali.it/wiki/Libro/OnLine
Optional text (in english)
Ultrasonic Nondestructive Evaluation Systems: Industrial Application Issues, Editors: Burrascano, P., Callegari, S., Montisci, A., Ricci, M., Versaci, M. (Eds.), SPRINGER - Educational objectives
- -Providing the basic elements of signal processing needed to control industrial processes and products.
The main knowledge acquired will be
-Signal representation in the frequency and time domains
-Frequency and time characterisation of linear signal processing systems using digital circuits
-synthesis of elementary circuits
-synthesis of circuits and algorithms for non-destructive diagnostics.
The main skills will be:
-to represent a signal in the time domain or in the frequency domain
-to characterise the transit of a signal through a circuit in the time or frequency domain for its processing
-be able to synthesise an elementary signal processing circuit for non-destructive testing of materials and industrial processes. - Prerequisites
- Fundamentals of the theory of linear and stationary analogue circuits.
Basic methods for studying these circuits in the time and frequency domains, and their energetic aspects. - Teaching methods
- Lectures, classroom and laboratory exercises
- Other information
- Attending classes is highly recommended
- Learning verification modality
- Oral test.
The test consists of questions relating to theoretical aspects of the topics covered in the individual courses and aimed at ascertaining the student's knowledge and understanding of them, as well as his or her ability to explain their content.
The approximate duration of the test is 20-30 minutes.
For information on support services for students with disabilities and/or DSA visit http://www.unipg.it/disabilita-e-dsa. - Extended program
- .: Basics
Signal representation in the time domain: impulse response and convolution
A/D conversion and sampling
TD Circuits, Digital Circuits, z-transform
Canonical structures and elementary methods of digital filter synthesis
Linear phase FIR filters
Statistical filtering: position of the problem; the optimal linear estimator; specific cases.
.: Circuits and Algorithms for Non-Destructive Testing (NDT)
Introduction to different NDT systems: focus on ultrasonic systems
Ultrasonic NDT systems: conflicting constraints on Range Resolution and Signal to Noise Ratio (SNR)
Maximising the received SNR and matched filtering
Pulse Compression (PuC) for the detection of anomalies in the response of a system in a noisy environment;
Acyclic or Cyclic implementation of PuC; Design of excitation signals;
Resolution Enhancement by Reactance Transformation
Introduction to Number Theory and MLS Orthogonal Sequences
Increasing inspection capability by extending the PuC technique to the modelling of non-linear behaviour
Examples of application to metal structure inspection and AVG curves
Application to building material diagnostics