Does anybody know if there is training out there specific to weldment fatigue recognition and annotation of discontinuities for CWIs/NDT (surface) personnel?
No luck on Google, wondering if this brain trust had any leads.
Not exactly sure what you are after, but, if I am even close then classes offered by NDT College for ASNT VT level I and II cover many aspects of fatigue, castings, forgings, and other items not really covered by the AWS for CWI study and testing.
finish, Since Gerald is here perhaps he can field this one better than I, but I know of no NDE method that can detect fatigue. Fatigue may manifest as cracking but until a destructive metallurgical test is done it is only an educated guess. And it certainly would not have anything to do with any CWI related responsibilities.
You are correct, they don't teach it. It falls under infrared/thermography which is a relative new kid on the block as far as US codes are concerned. I've worked with it in an R&D capacity, and can say it works, but it will be some time in my opinion before it's standard here.
The only things really taught about fatigue are things to watch for and make note of for continued observation with in operation service discontinuities. It is very difficult indeed without specialized equipment such as just mentioned.
Thanks for all the replies guys. One of the contracts I have requires me to perform a visual and surface exam of the existing structure prior to modifying. I guess they have had cracking and failure due to fatigue. Obviously, I am looking for cracking during my inspection, but wanted to know if I could get more training specific to fatigue. Discussion is great!
While on the subject, anybody here have experience with in service examination of amusement park rides e.g. roller coasters? What's the governing construction /inspection code, if any, and what type of inspections do they do? We specialize in elevated & at height welding and inspection, and I want to look into this niche....thanks!
My advice from a liability stand point is don't go there. When I was younger and dumber, I would have went for something like that. I am definitely older, and the dumb part is a matter of opinion.
The company I work for fabricates and installs chairlifts, trams, and gondolas all over the world. We also get mixed in with projects for the amusement park industry from time to time. Most of these projects are governed by the ANSI B-77 or ASTM F-24 standards, and as far as welding is concerned they refer you right back to AWS D1.1.