N/mm2 = MPa (just for clarity)
"Force" / "cross sectional area"
Therefore, if every test is reported in MPa the thickness of your test specimen shouldn't matter - assuming your thickness does not affect the strength of the film. The larger the cross section, the larger the Force to break it...
I am sitting here looking at an inspection protocol that requires a "Hammer Test" on coatings. A medium hard blow with a 1kg hammer. No flaking, chipping, spalling allowed.
Highly technical.
I'm looking for a chart / table / formula to calculate the voltage and current drop in a cable. Ideally I'd like to see the effect of length and gauge of the lead. Also, I suspect that the actual values of the voltage and current will have an effect.
Thoguhts?
The use of RT to find cracks is troubling. It's extremely difficult. Porosity, slag inclusions, and other 3D flaws are easily findable with a well trained RT crew. I've had conversations with the local Chief Inspector and he concedes that RT is not as useful as people give it credit for. UT is...
One of the most important design considerations in brewery piping is pressure relief. This can easily be accomplished on the finished product line with a pressure relief valve - similar to a tap. If designed properly this relief valve will be in the lunch room, after have run through a chiller...
There is a turf compnay that has a system that sprays a mist of water on the turf to drop the temperature. They claim a staggering temperature drop. Field hockey turfs are always wet and never have heat issues. Unfortunately football players believe that field turf is less likely to cause...
Keyhole welding is a PTAW method that, without knowing too much about this project, seems to be an unlikely candidate. KHW creates a very deep, narrow weld pool with a plasma jet. Great for some forms of heavy wall butt welds. I don't see it being applicable in this case.
I think the solid bar...
Cleanliness is next to Godliness. Most of the time. For Ti, it might BE Godliness.
I've had shops tell me that they can weld stainless, therefore they can weld Ti ("Ti is just really good stainless"). I always sound really happy and tell them I will be in touch..... and then call the next shop...
Many AC machines have settings listed as "Max Cleaning" and "Max Penetration". MC is weighted more heavily to DC+ and MP more to DC-.
I have been involved with studies that showed MC actually got better penetration. The balance was ~70%DC+. Theory being that the workpiece heated up as it is...
I'll grab that book tonight if possible. Can I assume that Q and Do can be found in there? If not, any direction on that.
I'm looking at the AWS and ISO standards on diffusible hydrogen measurement and am curious about differences in their procedures. So I'd like to know how far hydrogen can...
I'm lookign for help evaluating the diffusion rate of hydrogen in ferritic steel (pipeline), austenitic SS (309L), and Inconel 625 as it relates to temperature. I'm looking for the formulae that describes the movement. The concern is how far hydrogen can/will move in a given time at a given...
Yes, lots of help. I am intersted in qualitative results so you're answer is perfect for my needs...
Now let me compicate it. Add a third tube on the outside of the (previously) outer material. This tube has COTE 2. So the sandwich goes 2-1-2.
Same process, and the third tube (far outside) is...
Here's one I can't wrap my head around...
I have two tubes of differing material, that are concentric to each other and bonded. At 2000F they are both solid and intimately bonded throughout. I now cool them to room temp...
The outer material has a COTE of 1 and then inner material is 2...
Press fitting then welding will not keep a tolerance of 0.0008" The heat will most certainly distort the piece. I agree with those who say make the ID smaller than needed and then bore it out. Hopefully it's not a very long piece to the weld.
Consider the steps in fabrication to making post...
