Phoelasticity tests on stereolithography models

From: Giannis Giannatsis (
Date: Wed May 21 1997 - 18:18:07 EEST

Hello everyone,
I have just noticed a message from Du pont concerning the old and new resins she provides for use in the EOS machines, and I especially liked the idea of a transparent resin like Somos 3100 Series. I am currently interested in mechanical tests on RP models (especially bio-medical models) and especially for photoelasticity tests so a transparent resin may be the answer.

Till now I have come up with two possible ways of doing such tests in medical stereolithography models. The first one is by using the model itself, which I think must be made as transparent as possible. The second way must be using the model in a secondary process (silicon moulding maybe?) to produce the necessary parts for testing. Does anyone have any experience on such tests, or have any relevant information ?

Thank you in advance for your answers .

Giannis Giannatsis (
Dept. of Industrial Management
Univ. of Piraeus

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