|
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
|
|
|
DOI
|
|
|
|
10.1016/J.OPTLASENG.2008.01.002
|
|
|
Volume/pages
|
|
|
|
47
:3/4
(2009)
, p. 301-309
|
|
|
ISI
|
|
|
|
000264096500004
|
|
|
Full text (Publisher's DOI)
|
|
|
|
|
|