I'll try to keep the exploding to a minimum SparWeb... heh
jetmaker - very interesting idea, I'll have to look into that, we always have a few "toasted" doors around, if I can get the equipment together, I might be able to produce a "profile" that we could judge other panels...
I'll let jetmaker respond to your question, but as I see it - when your "third party" shear resistance is larger than the load (as is sometimes the case, especially in fatigue loading), then it isn't "third party" any more - it is primary... if you don't get to the point at...
FYI - Based on all the responses I got from the requests I shotgunned out, the following is the most promising lead:
Meandering Winding Magnetrometry (MWM) seems like the most promising option for evaluating this type of damage. Its basically an Eddy Current technique used to measure absolute...
jet fighter A/C, external skin panel/door, are exposed to hot exhaust from a jet fuel starter... The inspection gives color and distortion criteria... effectively, if the material is into the "brown" color range, and there is visually perceivable distortion (usually looks like...
in my experience, yes - it is possible... but the window of opportunity is very narrow... Most of those that I have known (and that has been only a few out of the hundreds of engineers I've worked with) that have achieved a position as a "liaison" type engineer without a degree, did...
davidjh - I'll answer each of the questions individually...
The design should preclude "damage" during normal operation.
- I have made a career out of fixing/addressing problems that should have been precluded. There is a myriad of reasons why the designers either get it wrong...
ok, let me take another attempt at this...
Dummy part - this is a good idea if I was trying to establish that we had a problem - or bound how big of a problem, but that isn't the case. We know this is an issue, and there isn't going to be a funded option to eliminate the problem any time soon...
Excellent suggestion, but unfortunately an active temp monitoring system would not be possible in the area, and crayons don't give you a feel for how long the temperatures were maintained...
We know that there are times when the doors are getting too hot (part of the reason they are Ti), but...
We have an issue in which some panels/doors get exposed to extreme exhaust gas temperatures. The current guidance for judging the panels good/bad is based on color and distortion. The maintainers find this to be very subjective. I understand some things have to be subjective, but I'm...
don't have time at the moment to get into details, but I'll give you my quick answer from my experience... machined parts are always a concern for long term applications in which fatigue cycling is a major factor (few environments more severe than helicopter structure)... cold working the...
TVP - thanks for the resources...
philcondit - I agree, we did take relative/comparitive measurements... and all measurements taken included liftoff factors...
I still wanted to be able to referece a solid source for a baseline value for 20204-T62 in my response. I found the information, but...
I have been searching for a definitive listing of %IACS (International Annealed Copper Standard) values. I found a lot of online sources that had varying levels of information, but no single listing that seemed to cover the entire spectrum - and most were very poor with referencing their source...
