NOISE CONTROL TECHNIQUES
Academic year and teacher
If you can't find the course description that you're looking for in the above list,
please see the following instructions >>
- Versione italiana
- Academic year
- 2018/2019
- Teacher
- FRANCESCO POMPOLI
- Credits
- 6
- Didactic period
- Secondo Semestre
- SSD
- ING-IND/11
Training objectives
- The course aims to address some advanced methods developed for noise control in industry.
Will address in particular the experimental and theoretical aspects concerning the sound propagation in porous media, the acoustic and physical characterization of materials used for noise control and their theoretical and numerical simulation (FEM).
At the end of the course students will be able to set a numerical noise problem through a finite element software, and properly size the sound system based on the acoustic design objectives. Prerequisites
- None
Course programme
- Sound propagation inside porous materials (5 hours)
Sound absorbing materials (3 hours)
Experimental characterization of porous materials (7 hours)
Analitical modeling of porous materials (6 hours)
Laboratory 1(5 hours):
experimental laboratory exercises for the complete characterization of materials with different techniques and application of theoretical models
Numerical simulations of vibro-acoustics problems (FEM, BEM, SEA, ray tracing)(18 hours)
Laboratory 2 (4 hours)
Techniques of FEM simulation for acoustics, Practical applications: propagation in ducts and indoors, mufflers and acoustic silencers Didactic methods
- Frontal lessons (50%)
Laboratory experiments (10%)
PC experiments with FEM code (40%) Learning assessment procedures
- Oral examination with presentation of a project developed with FEM. The exam will aim to:
- Verify the results obtained during the development of an assigned project, and knowledge of the FEM software;
- Learn how to present a techcnical project;
- Test the knowledge on the topics covered during the course.
The rating is assigned on a scale from 18 to 30/30 depending on the presentation of the activities and the answers provided by the student on the theory. Reference texts
- Lecture notes distributed in class by teachers
Other books:
J.Allard, N.Atalla, Propagation of Sound in Porous Media: Modelling Sound Absorbing Materials, Wiley, 2009.
T.Cox, P.D'Antonio, Theory, Design and Application, Spon Press, 2003.
