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which is the Best Course For Fatigue and Damage Tolerance learning?
4

which is the Best Course For Fatigue and Damage Tolerance learning?

which is the Best Course For Fatigue and Damage Tolerance learning?

(OP)
Just wanted to ask experienced F&DT engineers out there if they have a good course they recommend for an engineer wanting to learn more about F&DT. Which do you think is the best and is dedicated to training an engineer to immediately jump in and start writing reports related to Fatigue and Damage Tolerance, with little to no supervision from a more experienced engineer?

RE: which is the Best Course For Fatigue and Damage Tolerance learning?

"dedicated to training an engineer to immediately jump in and start writing reports" ... none !

A week long course is going to give you a little background, a bit of math, a few worked examples, and most likely a headache as you try and keep from drowning in all the new jargon.

For me, it is infinitely preferred to work in the field for something like a year, to get used to the jargon, the typical types of problems, the issues. Then take a course to back-fill. Maybe after a DT course (graduate level) at a nearby college/university ... many more hours + a much longer time = more learning.

another day in paradise, or is paradise one day closer ?

RE: which is the Best Course For Fatigue and Damage Tolerance learning?

As rb1957 says, this is a gradual learning type of thing. Familiarization with the subtleties takes time.

Recommend looking at this FAA site:

https://www.academy.jccbi.gov/catalog/course.asp?C...

An FAA sanctioned course is FAA22000029, (22000029) FATIGUE AND DAMAGE TOLERANCE ANALYSIS
from that list.

This course is offered here:
http://fdtcourse.com/

This is not an advertisement for this course. I recommend reviewing the description to determine applicability.

Keep em' Flying
//Fight Corrosion!

RE: which is the Best Course For Fatigue and Damage Tolerance learning?

(OP)
thank you LiftDivergence

RE: which is the Best Course For Fatigue and Damage Tolerance learning?

Several years ago I took a course offered by Sam Kantimathi,of Fatigue Concepts for an intro to DT.As others say it's hard to beat experience,or on the job training,an apprentice type position,pick someone elses brain.The text that came with the course was called "The Practical Use of Fracture Mechanics",by David Broek,a good introduction,to the subject,try him,at 916.933.3360
You sort of scare me with your statement abouting taking a course,and then jumping in a hammering out reports.

RE: which is the Best Course For Fatigue and Damage Tolerance learning?

I second others opinion here. On the job training along with a good mentor would make world of difference rather than just a course. The former also provides the context for the latter and can appreciate the literature or material better.

However, a book is published by SigmaK from UK titled Practical Airframe Fatigue and Damage Tolerance, ISBN 978-0-9565174-0-1.

Here is link for the same http://www.sigmak.ltd.uk/specialist_training_servi...

It is highly unlikely their training sessions are conducted outside of UK.

Disclaimer: I am in possession of the book. I have not undergone their training services. I think the book is OK. I also recommend David Broek's Practical Fracture Mechanics. The former compliments the latter. Together, they will provide you a brief idea about F&DT.

I have a good mentor who is patient enough to explain things repeatedly and lucidly until it goes through my thick skull. Thus I am able to better appreciate the subject.

RE: which is the Best Course For Fatigue and Damage Tolerance learning?

Thank you, MOHR1951 for your kind words. I have since gotten a more easy to remember number: just substitute the last 4 digits with 5000 ! (nine-one-six--nine-three-three--five thousand ! Just in case someone tried the other number which was disconnected in mid-1990s I think. or fatcon dot com
MOHR1951, please contact me to catch up after a quarter century!

RE: which is the Best Course For Fatigue and Damage Tolerance learning?

I recommend to follow the F&DT Class provided by Dr. Patrick Safarian (http://fdtcourse.com/index.php/instructors/). He is the FAA Specialist on Fatigue and Damage Tolerance analysis.
I attended Patrick's class and learned a lot.
If you work at an OEM you might want to have Patrick give the class at your location to you and your fellow engineers.

RE: which is the Best Course For Fatigue and Damage Tolerance learning?

2
This is a complex subject tha requires both analytical and practical experience/training. There are NO easy pathways to this knowledge and its proper application.

Hey guys... wasn't there a document [DoD] written on practical aspects/elements of durability and damage tolerance?? IF I remember correctly it was written as an intro to this wide subject.

Reviewing MIL-A-8860-thru-8871, MIL-A-8892 and MIL-A-8893 documents might give You added insight as too where-this-is-all-going. http://quicksearch.dla.mil/

Also, RE: Sam Kantimathi, Fatigue Concepts... I also took his course and it was very useful/practical.

Also, see attached 'Shop Awareness Briefing' that I copied ~25-years ago [1989]. It contains a little Fud-4-Thot that goes a long-way... describing fracture prone/critical elements of structures for mechanics... and how they can strongly influence the process.

Regards, Wil Taylor

o Trust - But Verify!
o We believe to be true what we prefer to be true. [Unknown]
o For those who believe, no proof is required; for those who cannot believe, no proof is possible. [variation,Stuart Chase]
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion", Homebuiltairplanes.com forum]

RE: which is the Best Course For Fatigue and Damage Tolerance learning?

This subject you learn alittle about by looking at cracks,and tears,then go read Sam's book and others then go look at some more cracks,low and behold all you thought you knew has been disproved.A subject that' really hard to draw conclusions about.Interesting from a theoretical point of view,but nature has a way of fooling us all,sometimes with unforgiving consequences.An interesting topic.When I was in school the answer was to stop drill the crack,increase the radius allow the crack to spread out,now smart people have thought about this and it may not be correct.A good person to follow might be a man by the name of Paris,he's at Park's College now,think he may know more about cracks than anybody around,then look at some more cracks,someday someone will figure it out.

RE: which is the Best Course For Fatigue and Damage Tolerance learning?

Chapter 6,of C.T.Sun's,Mechanics of Aircraft Structures may be of interest to you.
I should add,that both the book by Sun is most interesting,and Paris deserves much credit for his research,both of these texts are more theoretical in nature,the practical applications are not given,that's left up to us,the practicing engineer.Pure science is great,appling it requires cleverness,just as optimizing design does.

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