Publication
Title
Dynamic motion of human tympanic membrane: stroboscopic holography measurement and finite element analysis
Author
Abstract
The biomechanics of the human tympanic membrane yield a very sensitive sound transmission in a frequency spectrum ranging from 20 Hz till 20 kHz. In this work, motion of the tympanic membrane surface was investigated through stroboscopic holography and dynamic finite element modeling. Sound induced motion of the tympanic membrane was studied by stroboscopic holography, which measures both amplitude and phase of the displacement of the membrane surface. At low frequencies (< 2 kHz), the membrane moves with one to three displacement maxima. At higher stimulus frequencies, the motion becomes more complex with multiple areas of maximal amplitude and different phase. These patterns can be described as a combination of standing-wave-like modal motion and travelling wave components. A finite element model was constructed based on recent geometry measurements with micro-CT. In the model, a uniform sound stimulus was applied and the resulting tympanic membrane motion was calculated for various frequencies. The model reveals the importance of including damping in the tympanic membrane and discusses the wave motion apparent on the surface of the tympanic membrane.
Language
English
Source (journal)
OPTICAL MEASUREMENT TECHNIQUES FOR STRUCTURES & SYSTEMS2 (OPTIMESS2012)
Source (book)
5th International Conference on Optical Measurement Techniques for, Structures and Systems2 (OPTIMESS), APR 04-05, 2012, Antwerp, BELGIUM
Publication
2013
Volume/pages
(2013), p. 1-12
ISI
000319343800001
Number
978-90-423-0419-2
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 19.07.2013
Last edited 19.04.2017
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