RE: RP Strength Anisotropy Question

From: karapatis nakis (nakis@icapmail.epfl.ch)
Date: Tue May 19 1998 - 08:40:56 EEST


John,

I am pretty interested by this topic, although I haven't made any real
tests yet. You see, it also depends on the length of the specimens you
can make vertically... I have an SLS machine here, but EOS (metal
sintering). I am trying to launch students projects in this field and I
hope I get results sometime. I know that people at Electrolux have been
investigating this, in order to optimize part orientation.

Regards.

Nakis

........................................................................
........
Nakis P. Karapatis
Laboratory for Production Management and Processes
Department of Mechanical Engineering
Swiss Federal Institute of Technology, Lausanne
CH-1015 Lausanne
+41 21 693 3861
+41 21 693 3509
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.......

> -----Message d'origine-----
> De: John Kietzman [SMTP:kietzman@leland.Stanford.EDU]
> Date: lundi, 18. mai 1998 19:16
> : rp-ml@bart.lpt.fi
> Cc: kietzman@leland.Stanford.EDU
> Objet: RP Strength Anisotropy Question
>
> Does anybody know of any measurements of orientation-dependent tensile
> strengths (or other mechanical properties) for commercial RP
> processes?
>
> The obvious experiment is building tensile specimens in the plane vs.
> making specimens vertically, in the build direction.
>
> I am familiar with the work by Gibson and Shi (commercial SLS machine)
> and Thompson (old SLS machine), but I'd be interested in other SLS
> work as well. I'd also really like to hear about any work in FDM or
> SLA
> (including fresh-from-the-machine vs. post-cured parts).
>
> Have any of the companies released data like this, or even been known
> to collect the data internally? Are any academics investigating this?
>
> Any pointers appreciated,
> John Kietzman
>
> Stanford University
> Rapid Prototyping Laboratory
>
> kietzman@stanford.edu
>
> For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/

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