Publication
Title
Indentation measurements on the eardrum with automated projection moiré profilometry
Author
Abstract
Computer modeling of middle ear mechanics is an important tool to investigate its complex behavior, but correct mechanical and elastic parameters are needed to obtain realistic simulations. A possible way to determine eardrum elasticity in situ is the use of point indentation measurements. The eardrum is, however, a small fragile membrane, so a non-contacting high-resolution technique is needed to measure the shape change caused by point indentation. We have developed a projection moiré interferometer combined with an indentation actuator and a high-resolution force sensor. The apparatus applies deformations up to 1 mm with a resolution of , while the indentation force is measured with a resolution better than 1 mN. The moiré setup delivers height data on 512×512 points through phase-shifting, with a height resolution of . Shape recordings are made on a rabbit eardrum at different indentation distances, and indentation force is recorded simultaneously.
Language
English
Source (journal)
Optics and lasers in engineering. - Barking
Publication
Barking : 2009
ISSN
0143-8166
Volume/pages
47:3/4(2009), p. 301-309
ISI
000264096500004
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 09.02.2009
Last edited 12.11.2017
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