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Dear colleagues,
We are preparing some numerical model (FEM) of the process of the laser
thermokeratoplasty in our biomechanics laboratory (www.biomechanics.cz).
We would like to simulate this eye surgery.
The biggest problem (as usually) is input material data of the eye
structures but for the first estimation we need only these material data
of the human eye cornea: Modulus of elasticity and the thermal expansion
ratio.
We have done some experiments when we measured modulus of elasticity
(strain - stress curves). Now we are thinking about experiments on the
thermal expansion ratio (temperature - deformation curve). We think it
could be possible to use a strip of cornea and to put it in a
physiological solution. After that we will warm up the solution and we
will measure the change of the strip length.
This is our first idea. Has anybody any experience in this? We have
found neither data nor information about that problem in a literature.
Thank you in advance
=x========================================x=
Ing. Ales Donat
Czech Technical University
Faculty of mechanical engineering
Department of mechanics
Technicka 4
166 07 Prague 6
Czech Republic
-x----------------------------------------x-
tel.: +420 (2) 2435 2655
fax: +420 (2) 3332 2482
E-mail: donat@biomed.fsid.cvut.cz
http://biomed.fsid.cvut.cz/~donat
ICQ#: 54816295
=x========================================x=
---------------------------------------------------------------
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For information and archives: http://isb.ri.ccf.org/biomch-l
---------------------------------------------------------------
We are preparing some numerical model (FEM) of the process of the laser
thermokeratoplasty in our biomechanics laboratory (www.biomechanics.cz).
We would like to simulate this eye surgery.
The biggest problem (as usually) is input material data of the eye
structures but for the first estimation we need only these material data
of the human eye cornea: Modulus of elasticity and the thermal expansion
ratio.
We have done some experiments when we measured modulus of elasticity
(strain - stress curves). Now we are thinking about experiments on the
thermal expansion ratio (temperature - deformation curve). We think it
could be possible to use a strip of cornea and to put it in a
physiological solution. After that we will warm up the solution and we
will measure the change of the strip length.
This is our first idea. Has anybody any experience in this? We have
found neither data nor information about that problem in a literature.
Thank you in advance
=x========================================x=
Ing. Ales Donat
Czech Technical University
Faculty of mechanical engineering
Department of mechanics
Technicka 4
166 07 Prague 6
Czech Republic
-x----------------------------------------x-
tel.: +420 (2) 2435 2655
fax: +420 (2) 3332 2482
E-mail: donat@biomed.fsid.cvut.cz
http://biomed.fsid.cvut.cz/~donat
ICQ#: 54816295
=x========================================x=
---------------------------------------------------------------
To unsubscribe send SIGNOFF BIOMCH-L to LISTSERV@nic.surfnet.nl
For information and archives: http://isb.ri.ccf.org/biomch-l
---------------------------------------------------------------