All Questions
Tagged with mechanical-engineering materials
273
questions
2
votes
0
answers
28
views
Book recommendation for hydrodynamics of bubbles, drops, and particles
I am wondering if someone could please recommend to me some references on the topic of hydrodynamics of bubbles, drops, and particles, preferably in the context of complex and bio fluids.
I am ...
- 21
2
votes
2
answers
83
views
Assuming identical hole perimeter, for which shape is the stress minimized?
I know that stress is concentrated in the fillets, but what about the average stress along the entire hole? We can choose a circle, an ellipse, or a square with fillets.
For which shape would the ...
- 21
2
votes
1
answer
50
views
How is the assumption that stress and strain are elastic everywhere is valid for STRESS-LIFE method for fatigue life calculation?
Stress life method is generally employed for high-cycle fatigue (HCF) applications. while HCF region is approximated by $\sigma=a(N)^b$ which gives a linear graph on log-log scale, for steels it ...
- 41
1
vote
0
answers
24
views
Question about tensile test of model from research paper [closed]
In this paper they made a tensile force test on their four different models with four different pore size structure to show that pore size is not affecting on the tensile force. But it seems that they ...
1
vote
0
answers
51
views
How is a plank able to stop a spring door [closed]
So , here we have door which can get closed on its own due to spring. Agenda of Q is to put sth beside the door so that the door does not close .
The Q tells us that when we put a brick of 0.5kg. Door ...
- 679
0
votes
2
answers
65
views
Weight distribution on sliding or “pocket” doors
Does anyone know if hollow sliding/pocket doors have a weight/more dense wood at the bottom of the door to prevent from swinging?
- 1
0
votes
1
answer
24
views
Rubber that remains Elastic in Hot and Dry Application
I work for a valve manufacturing company and our customers have an application where very large volumes of hot (200F), dry air pass through our valve. As a consequence, the rubber (carboxylated ...
- 1
0
votes
1
answer
157
views
Determining max shear stress
So I understand that shear stress can be either in the the form of transverse or torsional or both at the same time. And normal stress is due to the moment or a force normal to the surface. My ...
- 33
0
votes
2
answers
54
views
Mounting a digital indicator on a plate
I have a flat aluminium plate and I need to mount a digital indicator[1] on it.
The digital indicator doesn't seem to have any mounting holes itself so I
think I need to use a clamp to hold it.
I don'...
- 105
4
votes
1
answer
12k
views
Why is the Stress vs strain diagram preferable to the Load vs displacement diagram?
I’m really unsure what is the difference between stress vs. strain and load vs displacement graphs and why stress-strain is better.
I know that the units are different:
stress is in MPa and the load ...
- 41
0
votes
0
answers
89
views
Why is carbon boil even necessary?
Particularly in an Electric Arc Furnace I have seen carbon boil occuring . I understand the reaction is very vital but what is it's utility? A detailed answer to this is most welcome. The internet ...
- 243
1
vote
1
answer
46
views
What does time temperature specifically give us? [closed]
What is a Time Temperature curve basically? I have come across this a couple of times while dealing with heat treatment in my industry. A detailed reply to this is most welcome.
- 243
0
votes
1
answer
98
views
Why is manganese steel non magnetic in as cast condition? [closed]
Is it because of some ferrite stabilizer or something?A detailed explanation to this is most welcome.
- 243
-1
votes
2
answers
146
views
Pressure vessel wall dimensions
I am trying to design a small cooling setup which has two parts: the compressed air vessel and the turbines. My understanding is that the compressed air, upon being released, passes through the ...
- 98
0
votes
3
answers
86
views
Economical difference with high-pressure vessel design pressures for fixed volume
Suppose space is not an issue and I need a fixed volume of compressed air (for storage), say 1m³. Is it more economical to manufacture a thick-walled vessel but with a smaller volume or a thin-walled ...
- 98