PS  I also have 25 years experience in all elements of bridges so can discuss many topics and not just fatigue cracks.

email you?!  

Whoops.  I thought there was a way on this site to email direct.  You can email me at pug_bb@hotmail.com.  Thanks for pointing it out.

Pug, usually the way this forum works is to post a question, idea, news or other commentary on the subject of engineering structures.  Those interested will respond to the post.

Having said that, please feel free to contribute your theories/ideas.  Others will reply as appropriate.

Thanks and welcome.

Pug
I fully agree with Qshake ,let us discuss in forum and share with other members , I am eagerly waiting for this  topic/s(as u said u have many topics) to be discussed-I appreciate  your initiative  --good luck

How much bridge experience do you all have?  Just want to know who I am talking to and at what level.

Sadly, I don't get an opportunity to be at this site more due to other thought grabbers.  But would like to get into a good topic and thus move other things aside.

Thanks

I though I would throw my 15 years of bridge inspection, maintenance, NDT evaluation, and construction experience in the mix.  And, just to start, I do not know of any reasonable manner of detecting a fatigue crack using ultrasonic inspection.  The majority of fatigue cracks are found using visual inspection techniques, and to a much lesser degree by acoustic emissions monitoring, however there are effective uses for ultrasonic inspection for problem details, weldments, etc...  What would you like to discuss?