Post pictures here?

Date 06-03-2005 19:20

I have a few interesting photos of welds taken during the inspection process and macro etched. Is it possible to post these here. These pictures show a crack in a mast arm sign post. I have been doing an investigation on the cause of these cracks. (Many mast arm sign posts show cracking) I would really be interested in what some of these experts have to say.
Thanks.

By thirdeye (***)

Date 06-04-2005 00:03

labtechy,

You can't post directly (upload) on this forum but you can use a site such as photobucket.com to store your photographs. Each photograph has its own url and tags. The basic service is free. You copy the url for a particular photograph then paste it in your post. Here is an example, just ckick on the link:

http://img.photobucket.com/albums/v377/thirdeye2/welding01/f7e7dc1a.jpg

This is a 1" test coupon I etched a couple of weeks ago. Note the huge pore of porosity in the cap.

~thirdeye~

By labtechy (*)

Date 06-06-2005 16:31

Thanks for the info. Afte several tries, I found I can't acess this site from work. Guess this is a no-go-

By jwright650 (*****)

Date 06-14-2005 13:53

I'm curious if these were hot-dip galvanized.
John Wright

By labtechy (*)

Date 06-15-2005 19:32

Yes they were hot dipped galvanized. A mast arm is a piece of tubing welded into a socket on a plate. The cracking appears on the thinner member. The crack grows due to the fatigue from constant swing back and forth from traffic passing under it or the wind.