[Radiance-general] stainless specular values

[Andrew McNeil]

Hi Aaron,

Peter has a database of measured materials with fitted radiance models:
http://www.pab.eu/gonio-photometer/demodata/bme/
I don't see stainless steel or zinc in that database.

I think probably the best thing to do, especially when you're trying to
distinguish between surface finishes, is to send your samples to a lab for
measurement.

Andy


On Mon, May 11, 2015 at 8:06 AM, Aaron Zeligs <aaron.zeligs at som.com> wrote:

> Hello Everyone,
>
> I an architect and am doing a glare analysis and need to accurately
> simulate different finishes of stainless steel as options.
> I am currently using the following material definition to simulate
> Stainless Steel w #4 Finish:
>
> # material name:STAINLESS_4
> # material type: reflective
> # comment: stainless_4
> # author: az
> void metal stainless_4
> 0
> 0
> 5 0.8 0.8 0.8 0.9 .125
>
> Im looking to simulate the following types of metal using the the
> appropriate different specular and roughness values, but don't have any way
> to accurately test the materials my self
> I have had a very hard time finding this information, and do not have the
> equipment to measure actual samples.
>
> 1) Stainless Steel Polished
> 2) Stainless Steel #4 finish
> 3) Stainless Steel Sandblasted
> 4) Zinc
>
> Does anyone have any thoughts what the reflectance/roughness values for
> these type of materials and finishes may be?  Thanks so much for any help
>
>
> Best,
> -Aaron
>
>
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