Minoo Bablani, a former student of Clemson University, did his master's thesis on "Part Orientation" for RP.
Though I did not read it, many RPers appreciated the effort for its thoroughness. Minoo can be reached at firstname.lastname@example.org You may also get a copy of his thesis from Clemson University for a small fee. Contact "Elaine the Queen" if you wish to get one.
Some one on the list asked for a contact at Liconix. Here it is.
Alex Laymon, 408 496 0300. I guess, Alex is the VP, Engineering.
Hope this helps.
> Okay, Guy, help me out here. I have been giving some thought lately
> to the influence of structure (micro- and milliscale) on properties of
> materials, and I am not convinced that there is a way to distinguish
> material properties from the properties (mainly mechanical) that arise in
> a given configuration. Am I wrong about that? What about a glass wisker
> vs. bulk glass? Does glass have an defineable intrinsic tensile strength
> that is independent of whether you happen to make it into a window pane
> or a wisker? (If the answer to that is yes, then your explanation should
> become an corrigendum to my book, where I discuss this briefly but didn't
> know about any such intrinsic properties.)
> Best regards,
> Marshall Burns
My 2 cents worth:
Most of the RP processes do have the ability to generate 'structures'
inside a part at a number of scales. For Fused Deposition these would
be road, layer and part scales. At which scale would you be interested to
define the properties on?
The building blocks of RP techniques, e.g. roads in Fused
Deposition, would have intrinsic properties that one can rely on. But
as the scale of interest is expanded gradually to a set of multiple number
of roads -> layer -> part, mechanical and transport properties (e.g.
thermal conductivity) become less intrinsic (structure dependent).
Still, identical porous structures made out of different materials would
behave drastically different due to the differences in their building
block properties. And this is the happy domain of heterogeneous materials
Manufacturing Processes Laboratory +1-312-355-0478 / +1-312-413-7408 [voice]
Mechanical Engineering Department +1-312-413-0447 [fax]
University of Illinois at Chicago e-mail: email@example.com
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