I consider all of that poor alignment. It certainly is if you talk to the Accountants, who expect every single change to be perfectly costed and documented at all times. I generally don't believe in that approach, but in most situations I've experienced the alignment truly isn't good enough...
Sounds like a company where the execution engineers and estimating team were poorly aligned. I've been doing my role for enough years now that I can warn the PM when an order scope looks squirrely and likely to creep and overrun. Our business improved quite a bit when we implemented a...
Step 1. Know what you sold. In complete detail. Make sure that detailed scope is part of the final contract and not brushed aside with final PO edits.
Step 2. Track what is happening, compare to what was sold. Offer change orders as required. Every time a document submittal is returned...
Ha! You have more experience than me but my experience is the opposite - in my corner of industry, cladding has always meant welding down sheets of thin high-alloy over plain steel. That cladding is only attached at the edges and any plug welds. Overlay is depositing continuous weld on top of...
I used to design static mixers. Typically 316 or carbon steel pipe section, 4-12" dia. While they are mechanically simple, they are NOT cheap carport fabrications when they are welded to a code. The cost and labor that goes into welding paperwork for just a single small pipe section like this...
What you have is fundamentally a locking device and you're trying to make it into something else. I had a set of tent poles with this kind of locking device and it worked really well.
There might be rod guide bearings with the tolerances and overturning moment capacity you seek, but be aware...
You may need to consult with a nominating body to get a non-EN material authorized via the PMA process.
I think generally you could be in trouble attempting this all on your own. The EU directives are not intended to make things clear and easy for non-EU companies to easily certify their...
Yeah my first thought is that this system is practically designed to lock / grip the rods.
So how are you going to address the requirement of keeping the shim stack parallel to ground?
I would consider using a tighter clearance hole, maybe located in the middle of the stack, that has a dowel...
^ agree that public speaking is a very valuable skill. In technical public speaking, a very important aspect is the audience trying to determine if you're worth listening to, and the biggest red flag for me is someone who pretends to understand the question more than they actually do. So...
There are a variety of types of 'corrosion': pitting, surface, and intergranular immediately come to mind. As you might imagine, these each have a very different effect on the propagation of a crack tip. Characterization would be complicated and the crack propagation rate is likely...
I don't know to be honest, but maybe adding an o-ring to one of the surfaces will trap air and further cushion the impact.
I think that if there is any difference, the alignment of the colliding parts and precision of the surfaces will govern the behavior.
When the shaft system critical speeds can be accurately calculated using a static solution it's called a 'rigid' rotor. This doesn't mean there is zero deflection in the system, rather, it means for the purpose of calculating critical speeds the deflections stabilize against centrifugal...
