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Dynamic properties of human middle e...

Zhang, Xiangming.

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Dynamic properties of human middle ear tissues.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Dynamic properties of human middle ear tissues./
Author:	Zhang, Xiangming.
Description:	123 p.
Notes:	Source: Dissertation Abstracts International, Volume: 74-09(E), Section: B.
Contained By:	Dissertation Abstracts International74-09B(E).
Subject:	Engineering, Biomedical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3561092
ISBN:	9781303078705

Dynamic properties of human middle ear tissues.
Zhang, Xiangming.

Dynamic properties of human middle ear tissues. - 123 p.

Source: Dissertation Abstracts International, Volume: 74-09(E), Section: B.

Thesis (Ph.D.)--The University of Oklahoma, 2013.

Middle ear tissues, including the tympanic membrane (TM), round window membrane (RWM) and stapedial annular ligament (SAL), play important roles in acoustic transmission function in the middle ear. Changes of mechanical properties of ear tissues caused by diseases may induce the conductive hearing loss. It is critical to measure the mechanical properties of these tissues for understanding the middle ear transfer function and the mechanism of hearing loss. However, there are limited reports about mechanical properties of middle ear tissues in the literature because of the extreme small size and complicated geometry of these tissues. Moreover, most of published studies focused on mechanical properties under the static or quasi-static condition. As the middle ear tissues undergo vibration in the auditory frequency range, the dynamic properties or complex moduli of the tissues may have more realistic value than the static properties. The dynamic properties of middle ear tissues will provide the accurate data for modeling of human ear.

ISBN: 9781303078705Subjects--Topical Terms:

1017684
Engineering, Biomedical.

Dynamic properties of human middle ear tissues.
LDR:03861nam 2200373 4500 001 1957371
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008 150210s2013 ||||||||||||||||| ||eng d
020 $a 9781303078705
035 $a (UMI)AAI3561092
035 $a AAI3561092
040 $a UMI $c UMI
100 1 $a Zhang, Xiangming. $3 2092254
245 1 0 $a Dynamic properties of human middle ear tissues.
300 $a 123 p.
500 $a Source: Dissertation Abstracts International, Volume: 74-09(E), Section: B.
500 $a Adviser: Rong Z. Gan.
502 $a Thesis (Ph.D.)--The University of Oklahoma, 2013.
520 $a Middle ear tissues, including the tympanic membrane (TM), round window membrane (RWM) and stapedial annular ligament (SAL), play important roles in acoustic transmission function in the middle ear. Changes of mechanical properties of ear tissues caused by diseases may induce the conductive hearing loss. It is critical to measure the mechanical properties of these tissues for understanding the middle ear transfer function and the mechanism of hearing loss. However, there are limited reports about mechanical properties of middle ear tissues in the literature because of the extreme small size and complicated geometry of these tissues. Moreover, most of published studies focused on mechanical properties under the static or quasi-static condition. As the middle ear tissues undergo vibration in the auditory frequency range, the dynamic properties or complex moduli of the tissues may have more realistic value than the static properties. The dynamic properties of middle ear tissues will provide the accurate data for modeling of human ear.
520 $a In this study, the dynamic properties of human TM, RWM and SAL specimens harvested from cadaver temporal bones were measured in the auditory frequency range. The generalized linear solid model was used to describe the viscoelastic behaviors of these tissues. Two different approaches were used to measure ear tissues. The first approach of using acoustic driving was developed for membrane tissues, such as TM and RWM. Vibration of the membrane specimens in response to acoustic driving load applied to the specimen was measured by laser Doppler vibrometer over the frequency range of 200-8000 Hz. The dynamic experiments were then simulated in finite element models by acoustic-structure coupled analysis in ANSYS. Dynamic properties of the TM and RWM were derived by inverse-problem solving method.
520 $a The second approach was using dynamic mechanical analyzer based on the frequency-temperature superposition principle. The dynamic tests were conducted for the TM and SAL specimens at the frequencies from 1 Hz to 40 Hz at three different temperatures: 5°, 25° and 37°C. The frequency-temperature superposition principle was applied to expand the test frequency range to a much higher level (at least 3760 Hz). The viscoelastic parameters and the complex moduli in the frequency domain were obtained and the results were comparable to the published data. The potential effects of the experimental condition and specimen dimension measurement on the results were estimated.
520 $a The methods and results reported in this study contribute to soft tissue biomechanics. The complex moduli of middle ear tissues can be applied into finite element model of human ear to improve the model accuracy.
590 $a School code: 0169.
650 4 $a Engineering, Biomedical. $3 1017684
650 4 $a Engineering, Mechanical. $3 783786
650 4 $a Biophysics, Biomechanics. $3 1035342
690 $a 0541
690 $a 0548
690 $a 0648
710 2 $a The University of Oklahoma. $b Department of Bioengineering. $3 2092255
773 0 $t Dissertation Abstracts International $g 74-09B(E).
790 1 0 $a Gan, Rong Z., $e advisor
790 1 0 $a Stalford, Harold L. $e committee member
790 1 0 $a O'Rear, Edgar A. $e committee member
790 1 0 $a Starly, Binil $e committee member
790 1 0 $a Hawa, Takumi $e committee member
790 $a 0169
791 $a Ph.D.
792 $a 2013
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3561092