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Subject: a robust optical system to measure deformations of solids

Date: 12/21/00 at 9:20 AM
Posted by: Marc Remy
E-mail: Marc.Remy@swing.be
Message Posted:

Sir, Madam,

Our departement is searching for a robust optical system to measure deformations of solids (mainly large piece of metals) in the regime of plastic deformations (till breaking).

Requirements :

We want to monitor the full surface displacement field ((x, y, z) components) from a "free" state to a stressed state in real time or quasi-real time (some seconds). Hence, a system measuring just the radial
deformations will not fit.

Our primary interest is "large" deformations (of the order of 0.1 mm and larger). But our ideal system is also able to measure deformation of the order of 0.001 mm and possibly vibration modes. A system where small
displacements are co-added to get the final measurement for large deformations will probably not fit, if it is time and disk-space (to store
images) consuming.

The system must be working in a normal mechanical laboratory with lights on (no dark room). It must be not too sensitive to vibrations.

Field of view : of the order of 0.25 m x 0.25 m or 0.5 m x 0.5 m.

The system size must be of the order of a CCD camera size.

Optionnally, we are also interested in measuring directly the shape of the sample.

If you have a proposal or questions, thank you to contact me first by E-mail.

Marc Remy, Ph. D. in Sc.
Postdoctoral Researcher
MSM department

Institute of civil engineering
University of Liège in Sart-Tilman
(Bât. B52/3)

avenue des Chevreuils, 1
4000 Liège 1

Office: +1/546 (first floor)
Tel.: + 32 4 366 96 14
Fax.: + 32 4 366 91 92
WWW : http://www.msm.ulg.ac.be/WWW/MSM.html
E-mail : Marc.Remy@swing.be

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