What exactly is "Gaussian"? I read an article on Wikipedia but I just didn't get it. Can someone please explain to me the difference between Gaussian and non-Guassian? Please type slow and keep it as simple as possible (I'm no rocket scientist). Thanks
These links may help out... Perhaps these articles may enlighten you... Although I warn you, the math isn't for the faint-hearted!!! Note: Giovanni! You may be interested in the first two links! ;-)
Here is a very interesting article regarding software capable of solving various equations related to welding, casting, upsetting and extrusion computational modeling and thermal stress analysis, etc.
Very Interesting reading. Thanks Henry. It seems that "Gaussian' refers to a conical shaped power/heat source that can be accurately measured and uniformily applied. EB welding is Gaussian but GTAW is not. Is there a mathmatical formula which explains/defines GTAW instead of saying what it is not ( non-gaussian)? Further insight and or correction would be greatly appreciated.
I believe you may find what you're looking for in this article which talks about the two types of heat distribution equations such as the ellipsoidial and gaussian models which the author get into more in depth here:
Ellipsoidal! Yes that's what I was looking for. It was mentioned in a previous article that you posted but I missed it. The more I learn the more I realize that I don't know. Thanks again Henry!
Apparently it is very difficult to get accurate measurement of the GTA arc energy distribution, but researches such as Dr. Tsai have suggested the GTA arc to be gaussian. It is fairly simple to get a precise measurement of the EB distribution. Dr. Paul Burgardt used a modified faraday cup to measure EB power distribution and showed it to be gaussian. Dr. John Elmer used a similar faraday cup arrangement and analysis software and showed that the EB is largely gaussian in cross section but that it can have some non-uniformity when viewed in 3-d. The EB power profile can acutually reflect the shape of the filament in the gun, and it can create a rectangular foot print on the workpiece.
This article addresses a comparison GTA with matching power level conduction EB welds, and suggests that since the EB welds cannot replicate the shape of GTA, then GTA must not be gaussian. http://files.aws.org/wj/supplement/Pierce/ARTICLE3.pdf
In another post I asked about the differences between 304L. A reply contained a link to some very interesting reading. In the info. it refered to Gaussian and non-Gaussian. I just wanted to understand what I was reading.