Posted on 11/01/2011

This innovative work by a group at Loughborough University, UK investigates how the mechanical properties of stereolithography (SL) resins are affected by the level of moisture in the environment.

Indentation and creep studies were carried out while the humidity around the test area was varied between 33.5%, 53.8%, 75.3% and 84.5% relative humidity. The ambient temperature was kept constant at 22.5 C. Hardness and modulus decreased with increasing absorbed moisture in the resin. Material parameters obtained through bulk tests were used to develop a coupled stress-diffusion finite element model incorporating rate dependent material behaviour.

Reference

Modelling the effect of moisture on the depth sensing indentation response of a stereolithography polymer, Kazim Altaf et al, 

Comput. Mater. Sci. (2011), doi: 10.1016/j.commatsci.2011.01.051 

 

 

 

 

 

 

 

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