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Anonymous Poster

Welding Calculation

10/22/2009 2:44 AM

I need to calculate the Tensile Strength of welded joints MANUALLY (as in looking for the force, height, width) and then compare it with the standards. Material used is Steel. How do I DO THIS SO CALLED 'MANUAL CALCULATION'?

My lecturer told me to find a list of formulae used to do this. He said that he does have a list of all the formulae but never wanna give it to me. So, how do i do this?

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Power-User

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Location: United Kingdom
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#1

Re: Welding Calculation

10/22/2009 3:08 AM

My lecturer told me to find a list of formulae used to do this....

GOOGLE ..."Tensile Strength of welded joints" ...BROWSE ...

Regards Woody

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Guru

Join Date: Mar 2007
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#2

Re: Welding Calculation

10/22/2009 3:10 AM

Google > 1.800.000 answers in 0.2 s

Among the first 5 two tables with ALL information you need.

Good luck you will have more material as your lecturer!

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Anonymous Poster
#3

Re: Welding Calculation

10/22/2009 2:04 PM

If you can, possibly at a library, find the books - particulary "Design of Weldments" and/or "Design of Welded Structures" by Omer Blodgett - he is perhaps the original welding designer and perhaps the BEST.

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#4
In reply to #3

Re: Welding Calculation

10/23/2009 12:52 AM

If you were a member, I'd give you a GA. I have both books. Design of Weldments is probably better for all but structural applications. They are also very inexpensive.

Anyone know if he's still around? He got his start in WW2, so he's got be be in his 80's, but when I met him I got the feeling he would never retire.

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Anonymous Poster
#5
In reply to #4

Re: Welding Calculation

10/23/2009 10:14 AM

Re: "Anyone know if he's still around?" ...

He turned 90 on Nov 27, 2007...

...still has a lot of "friends", whether with us or gone...

Omer W. Blodgett

there's a link to an interview with him that you can watch, as well as individuals who associated with him. One of them might could answer definitively whether he is still with us.

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Anonymous Poster
#7
In reply to #5

Re: Welding Calculation

10/23/2009 12:56 PM

Permit me to provide a great link to his articles

http://weldingmag.com/blodgett/index1.html

Some are great ones and one is important

http://weldingmag.com/blodgett/wdf_66408/

refer especially to

Failure of the code to permit something does not necessarily equal prohibition.

and

In reality, governing codes are likely to be one or two steps behind what is already in practice. This is not necessarily bad. A history of successful usage is often essential before the code writers will incorporate new materials or practices into the standards. In the interim, those with the authority and responsibility to approve or disapprove code alternatives must carefully scrutinize and fully evaluate new practices before officially accepting or rejecting them. Great caution should be exercised, and irresponsible ideas must be disallowed. However, new approaches should not be rejected out of hand simply because they "are not in the code".

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Guru
Engineering Fields - Piping Design Engineering - New Member Egypt - Member - Member since 02/18/2007

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#6

Re: Welding Calculation

10/23/2009 11:38 AM

The following site Gowelding is very interesting, which includes Calculating the strength of welded connections.

Lap Joint Subject To Bending and Shear

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Anonymous Poster
#8
In reply to #6

Re: Welding Calculation

10/27/2009 12:27 AM

Good info on Welding strength but very bad welding practice.

You get corrosion in the area of the red dot between the two materials. Not recommeded.

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