SD2185 Ultraljud 6,0 hp

Ultrasonics

OBS!

Detta är en nedlagd kurs.

The course covers the theoretical background and some practical aspects of basic phenomena and techniques involving ultrasonic waves.

  • Utbildningsnivå

    Avancerad nivå
  • Huvudområde

  • Betygsskala

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

Sista planerade examination: VT20.

Det finns inget planerat kurstillfälle.

Lärandemål

After the course the students should be able to:

  • Derive the wave equation and find its plane wave solutions in infinite, anisotropic solids, isotropic semi-spaces, a planar wave guides.
  • Formulate the boundary conditions associated with interfaces between solid-vacuum, solid-liquid, and solid-solid. Solve the related problem.
  • Use, at least qualitatively, the main concepts of scattering theory to describe the interaction between waves and defects.
  • Select the wave mode which is most appropriate for a given type of inspection. Select the appropriate transducer and experimental set-up to generate the mode.
  • Inspect solid materials and provide a qualitative interpretation of the inspection results

Kursens huvudsakliga innehåll

Elements of elasticity: strain and stress tensors, work, internal energy, generalized Hooke’s law. Propagation of bulk waves in isotropic and anisotropic solids: Christoffel equation, slowness surface; energy conservation and Poynting vector; group velocity. Rayleigh and Lamb waves: general properties of these modes and of their dispersion relations. Interaction of ultrasonic waves with perfect and damaged interfaces: boundary conditions; reflection and transmission. Radiation and Scattering: introduction to Green’s functions, radiation by a piston, Lommel integral, elements of scattering theory. Introduction to Nondestructive Evaluation (NDE): examples of material characterization by mean of ultrasonic waves.

Behörighet

Basic courses in mathematics, mechanics and noise control.

Litteratur

Ultrasonic Waves – Fundamentals and Applications’, J. David & N. Cheeke, CRC, Series in Pure and Applied Physics, CRC Press

Class notes

Examination

  • INL1 - Inlämningsuppgifter, 3,0, betygsskala: P, F
  • TEN1 - Tentamen, 3,0, betygsskala: A, B, C, D, E, FX, F

Krav för slutbetyg

Oral examination (TEN1; 3 university credits), Assignments (INL1; 3 university credits).

Ges av

SCI/Farkost och flyg

Examinator

Leif Kari <leifkari@kth.se>

Övrig information

Ges ej 08/09. 

Ordinarie examinator är Leif Kari.

Påbyggnad

SD2145 Vibro-Acoustics
SD2130 Signal Analysis
SD2165 Acoustical Measurements
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
SD2190 Vehicle Acoustics and Vibration

Versionsinformation

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