Title: Indentation measurements on the eardrum with automated projection moire profilometry
Authors: Buytaert, Jan ×
Aernouts, J. E. F
Dirckx, J. J. J #
Issue Date: Mar-2009
Publisher: Applied Science Publishers
Series Title: Optics and Lasers in Engineering vol:47 issue:3-4 pages:301-309
Conference: Workshop on Optical Measurement Techniques for Structures and Systems Leuven, BELGIUM, MAY, 2007
Abstract: Computer modeling of middle car 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 moire interferometer combined with an indentation actuator and a high-resolution force sensor. The apparatus applies deformations up to I mm, with a resolution of I gm, while the indentation force is measured with a resolution better than 1 mN. The moire set-up delivers height data on 512 x 512 points through phase-shifting, with a height resolution of 15 mu m. Shape recordings are made on a rabbit eardrum at different indentation distances, and indentation force is recorded simultaneously. (C) 2008 Elsevier Ltd. All rights reserved.
ISSN: 0143-8166
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Non-KU Leuven Association publications
× corresponding author
# (joint) last author

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