Hi Everyone,
Baseed on thread507-273125, I am working on designing a standardized set of lifting lugs using ASME BTH-1-2008.
For now, I am working on a single case and detailing the calculations.
The lug is as per figure C3-3. I have also attached a sketch.
I need to vary the angle of the...
Hi all,
I am looking for a proven way to measure the outside diameter of our main steam and reheat lines (20 to 38" OD) without removing insulation or drilling holes into it (online).
The insulation material is ceramic brick covered by steel cladding.
Could ultrasound, xray or radar be used...
Hi All,
Is there such a thing as a galvanic series for sulfuric acid or is the acid too weak of an electrolyte to have a galvanic corrosion problem?
I have a new pump with an alloy 20 liquid end that I want to hook up to existing carbon steel (A106) piping.
Sulfuric acid concentration is 93%...
Hi All,
I have a pump with an alloy 20 liquid end, the pump is used for a sulfuric acid application.
I am looking for a suitable material to pipe in the pump and avoid any galvanic corrosion.
I also need to use some existing carbon steel (A106) pipe so the material needs to be compatible with...
Hi All,
I am looking for a sulfuric acid viscosity chart for a 93% concentration.
I have a few of them but I need to find the viscosity at -30 deg Celsius (-22 deg F).
Does anyone have such a chart ?
MM
Hi Everyone,
I am looking at using a storage tank to supply waste oil (similar to #5 oil viscosity) to a suction line for positive displacement process pumps.
I am trying to see if I will need a pump to overcome the friction losses in the suction line to my process pumps or if the level of my...
Hi all,
I am trying to size a pump for my system.
The system branches out downstream of the pump discharge (3 branches) and recombines before discharging into a tank that is open to atmosphere.
There is only one pump in my system, this is not a parallel pump system.
How do I determine the...
Hi All,
We use Inventor 11. My question is the following:
Is there a practical way to generate a report containing the BOM and cost (for every componant) within Inventor ? And would this database be "smart" or linkable to excell or access ?
If not, is there any software or plugin that could...
Hi all,
Can anyone tell me what are the factors affecting performance of a star screen ?
1. Speed of star shaft rotation
2. Separation of the stars
3. ?
4. ?
Thank you.
Hi all,
I need some help finding a certain function (if it exists)
I have 2 vectors of experimental data (in sine form of amplitude vs frequency) and I need a function to calculate the average amplitude of my sine wave. I don't think curve fitting will work since the data is not very stable...
why does this only give me one point on the graph ?
t=0;
x=0;
for t=0:0.01:1,
x=(exp(-t)).*((sin(sqrt(3)*t)+cos(sqrt(3)*t)));
t=t+0.01;
end
for t=1.01:0.01:5,
x=(exp(-t)).*((sin(sqrt(3)*t) + cos(sqrt(3)*t))) + (0.866*exp(t-1)).*(sin(sqrt(3)*t));
t=t+0.01;
end
plot(t,x)...
Hi all,
For some reason I can't seem to be able to use this function:
>> 0.206*exp((-3.747*t))*sin(15.36*t)
??? Error using ==> *
Inner matrix dimensions must agree.
You can see the associated error message, can someone help me please ?
By the way,
t=0:0.01:10;
Thanks,
-R
Hi,
I am trying to solve a linear system of equations with lsolve but there are certain values of the solution that are known.
How can I do this?
Thanks
Hi all,
I am trying to create a mathcad file to solve three equations of movement in the laplace domain (to find the transfer fct) with a matrices (Cramer method) and i can't find the help topic on this subject.
any thoughts
tks
Ren
