SD2165 Akustiska mätningar 8,0 hp

• Utbildningsnivå

  Avancerad nivå

• Huvudområde

• Betygsskala

  A, B, C, D, E, FX, F

• Kurswebb

Lärandemål

The aim of the course is to teach students basic knowledge of sound and vibration measurements as well as analyses. Students will learn the ability to handle common acoustical measurements and to design new experiments in their future work.

After the course students shall be able to:

• Perform standard measurements in acoustics and in vibration, understand physics behind the measurements.
• Design new measurements according to requirement
• Criticize and find possible problems in measurements

Kursens huvudsakliga innehåll

The course consists of theoretical and practical parts. In the theoretical part, students will learn basics of measurement techniques and the physics behind, principles of sensors, error analysis and the ways to reduce measurement errors, and the relevant International Standards. On the practical side, students will carry out around six experiments covering the following topics:

• Basic acoustic measurements, influence of environment
• Sound power measurements: sound pressure and sound intensity methods
• Air-borne and structure-borne sound transmission loss
• Basic vibration measurements, influence of the sensors
• Sound absorption and surface acoustic impedance
• Reverberation time and different ways to measure structural loss factor

Behörighet

Basic courses in mathematics, mechanics.

Litteratur

Compendium: Acoustical Measurements by Leping Feng. KTH Aeronautical and Vehicle Engineering.

Selected chapters from Handbook of Acoustical Measurements and Noise Control (3rd Ed.) by Cyril M. Harris (editor)

Selected chapters from Acoustical Measurements by Leo L. Beranek

Examination

• LAB1 - Laborationer, 5,0, betygsskala: A, B, C, D, E, FX, F
• TEN1 - Tentamen, 3,0, betygsskala: A, B, C, D, E, FX, F

Krav för slutbetyg

Lectures and home assignments – written tests (TEN1; 3 university credits)
Laboratory work – attend all lab exercises and submit reports (LAB1; 5 university credits)

Ges av

SCI/Farkost och flyg

Examinator

Leping Feng <fengl@kth.se>

Påbyggnad

SD2145 Vibro-Acoustics
SD2130 Signal Analysis
SD2150 Experimental Structure Dynamics
SD2155 Flow Acoustics
SD2160 Ljud- och Vibrationsprojekt
SD2170 Energy Methods
SD2175 Numerical Methods for Acoustics and Vibration
SD2180 Non-Linear Acoustics
SD2185 Ultrasonics
SD2190 Vehicle Acoustics and Vibration

Versionsinformation

Kursplan gäller från och med HT2007.
Examinationsinformation gäller från och med HT2007.