All Questions

Filter by
Sorted by
Tagged with
0
votes
0answers
3 views

Would Amorphous Diamond-like Carbon coatings have a fatigue cycle limit?

I'm aware that polymers like most plastics can go through stress cycles indefinitely as long as the covalent bonds are not ruptured. On the other hand, I hear that even metals like steel and ...
0
votes
0answers
5 views

Overlay design of AC pavement

How can I conduct an overlay design in MEPDG- existing pavement is 6 in AC on top of 6 in Agg base on top of subgrade- mill thickness is 3 in. Should I construct a section with 3 in overlay layer, on ...
0
votes
0answers
17 views

Steel design and manufacturing company recommendations [closed]

I am trying to find UK-based engineering companies to help me refine a prototype, including 3D-modelling/CAD, and ultimately manufacture at scale (I hope...). I'm not having much luck simply googling ...
0
votes
0answers
13 views

C++ simulate physical audio output

I am searching for help with simulating a physical audio device and get its input from the OS (mainly Windows and Linux). Couldn't find any information about this so far. The idea is to block the ...
0
votes
0answers
9 views

Force Table containing a pulley, and three forces at different angles with different weights

I am a 17-year-old in high school physics. I'm particularly good at physics yet I am stumped with what we did the other day in class. Our teacher explained what a force table was and came up with a ...
1
vote
1answer
24 views

prevent shaft from moving in solidworks

i designed a gearbox with 3 shafts.i wanted to do sth so shafts only have rotating movement and not any other type of movement.i cant find any type of mate that can do that,any suggestions?
0
votes
1answer
21 views

Design automation using fluid dynamics simulations

I have a question about design automation or generative design. There is a company that creates pumps. Their work-flow is following: 1) create design of a pump using CAD 2) create mesh for ...
1
vote
1answer
15 views

How does indoor temperature factor in when determining ideal relative humidity in a home?

I am having trouble understanding how indoor temperature plays into what a healthy indoor relative humidity level should be. Most sources I have come across searching the topic online provide a range ...
8
votes
1answer
793 views

SOLIDWORKS - 3D Sketch of Trombone

My task is to create a 3D Sketch of a trombone like the one below My professor recommended defining the points 1-4 and putting a spline through them. I did that, but my resulting design looks weird. ...
0
votes
0answers
9 views

Sunroof Testing

I have 2 sets of data. The 2 sets are not linked. One is regarding the curvature of the glass panels of the sunroof. The other data is about the factors of the glass panel like thickness and I-value ...
2
votes
1answer
26 views

solidworks mating gear with shaft problem

I am trying to mate a gear with a shaft via a key.key coincident with gear and cocentericity of gear with shaft cannot both be made.
0
votes
0answers
16 views

Passive pressure at bottom of soldier for a shoring wall

The passive earth pressure "Pj" at bottom of soldier in a shoring wall getting from literature "Soldier pile System" in CA trenching & shoring manual (revised 06/95) & used in certain software ...
1
vote
2answers
42 views

Does a house heating system affect perceived and true indoor air humidity?

Does a house heating system affect indoor air humidity? Or to be more precise, does it affect your perception of how dry the air in the house feels (for instance dry is your mouth waking up)? (I ...
0
votes
2answers
25 views

Rocket vs aeroplane? Difference in take off?

Although both aeroplane and rocket burn fule and eject smoke but Why aeroplane moves and runs horizontally before take off ?why does not it takes off at its original/initial place just like rocket?
2
votes
1answer
21 views

Truss analysis of internal forces in members

I am trying to calculate the internal forces and their nature in this truss, however, I cannot seem to do so as both the method of joint and the method of section do not work. I think this is because ...
-1
votes
1answer
40 views

How the design of ship help to survive in the water

I have seen bigg cargo, and other ships, and I like their structure very much., a question come sin my that why the ship structure is like this. Can anyone explain what was reason for this. I am not ...
2
votes
1answer
21 views

What calculation to find how much force before tipping over?

I was thinking of building a free standing structure out of plumbing pipe that would go flush against the wall to hang jackets and other items. Attached is a sketch of the general thought of what the ...
-1
votes
1answer
22 views

Designing an RLC circuit with specific transfer function

I have a transfer function below. $H(s)=(s^2+(1/2)s+(1/2))/(s^2+s+1)$ Using this, I have to design an RLC circuit with that transfer function. At first hand, I did some inverse Laplace Transform, ...
2
votes
0answers
19 views

Airfoil meshing using ANSYS

Logged in a little time ago i have a new question. So I am trying to mesh an arifoil geometry using ANSYS meshing. Airfoil number is NACA 84-M profile. Running 2-D simulation my main objective is to ...
1
vote
0answers
11 views

Basic dimension relationships in a valveless pulsejet engine

I'm willing to take my own shot at the construction of a blast supercharged valveless pulsejet, a holy grail among DIY jet enthusiasts. However, since my idea is not very compatible with the geometry ...
-1
votes
0answers
33 views

Cost engineering support plan

So i have the following assignment to do till tuesday. Write a Cost Engineering support plan which reflects the Project Control Cycle. A wine company is wondering if they should invest in another ...
-2
votes
1answer
37 views

Build airports on plateaus?

I was wondering whether it might be a feasible idea to build airports on top of high plateaus in order to lower the cost of the take-off? Such a plateau might have an altitude starting from 5000 ...
2
votes
1answer
34 views

What will happen if we place a couple of separate, small stators around a long rotor instead of 1 large stator around a short rotor?

My original theoretical consideration was using the electric motor's rotor as drive shaft in a car. It led me to this question: "What will happen if we place a couple of separate, small stators around ...
0
votes
1answer
23 views

How much does the weight of urban structures (buildings) affect the compaction (permeability, porosity, density) of alluvial sediments below a city?

Original Question was here. I live in Van, Turkey. Van City is situated on an alluvial plain beside Lake Van. General geological structure of the area can be seen on pages 43-44 in this conference ...
-1
votes
0answers
19 views

Is it possible to run 3D design and modeling software on Integrated Graphics?

I'm a student and I need to buy a laptop on a mid-range (~ $500) budget for learning modeling and design software. I think all I'll get on this budget are the ones with integrated graphics (like Intel ...
-1
votes
1answer
37 views

What CAD software is this?

In Rocket Lab's presentation video, at around 00:21, you can see some engineer work with CAD software. Here's a screenshot: Can anyone recognize which software they're using? Asking for a friend.
4
votes
0answers
22 views

Why are the outter tracks of a magnetic disks more stable?

In our digital computers class, the professor mentioned that the outter tracks of a magnetic disk is more reliable because the outter bit are "bigger". Isn't the packing density of a magnetic disk ...
-1
votes
1answer
14 views

Uses of orifice in Water Jet Cutting?

I wonder whats the usage of orifice/orifice plate in Water Jet Cutting Machines. To increase pressure(due to a smaller diameter with respect to the entrance cross-sectional area) or to convert to ...
2
votes
0answers
24 views

Is a motor failure caused by a defect bearing considered to be a failure mode or is it higher vibration and speed loss in FMEA/FMECA?

Let us assume we have a motor with a bearing which is exhibited to wear. Over time, we can observe higher vibration, increased noise and the motor speed reduces due to the bearing fault. In the end, ...
1
vote
0answers
12 views

I have 3D model ready in Autocad. I would like to color it and extract a 2D png file from it to use

I am new to the AutoDesk AutoCAD drawing software. I would be really appreciated it if someone could help me out. I will attach the image of the content. I found 3D drawing from the internet, which ...
-1
votes
0answers
12 views

Hydraulic solenoid valve recommendation [closed]

Not sure if it's appropriate to ask this question. Im looking to prototype a marine ROV. looking for waterproof (~100m) solenoid valves. Can anyone point me to sources? thanks:)
-2
votes
1answer
32 views

Will specific fillers or chemicals make simple plastic milk cartons more durable, enough to be used as weightlifting plates

no code involved and no technical equipment is going to involved in experiment and implementation for business/tech startup that is, in brief, a way for me to exercise during my business studies! ...
-1
votes
0answers
12 views

Describe the Relationship between System Constants for a Ideal Gas Thermodynamics

I am required to write a report on System Constants for ideal gases. I don't entire understand what is required of me. By system constants does he mean when you hold either volume, pressure or ...
0
votes
2answers
39 views

Deflected Beam Shape as a Function of z

I'm a bit confused with the wording of the question. What does it mean by expressing the bending moment and the deflected shape of BC as a function of z? Thank you]1
6
votes
7answers
913 views

Can I weaken a coil spring consisting of spring steel?

I have a steel coil spring that is used by compression. It is too strong, and I would like to reduce its strength by some fraction, ideally keeping its length. Reducing it to roughly half would be ...
-1
votes
0answers
7 views

MAASP calculation

I am a second year petroleum engineering student. I need help with calculation of maximum allowable annular surface pressure (MAASP) on different types of annuli. There are inputs entered by an ...
1
vote
2answers
26 views

High frequency TIG welding and Bluetooth or WIFI frequency

I need to work on a project where multiple objects need to exchange trough wireless protocol and they are near to High frequency TIG welding machine. All objects works by pair (one emitter and one ...
0
votes
2answers
38 views

Why are/were sewers made large enough for somebody to walk down in there?

Today, I have been reading a lot about sewer systems on Wikipedia, in the hope that I would find information or at least photos showing what I think of as sewers, namely somewhere under the streets in ...
0
votes
0answers
17 views

How to calculate heat transfer between two solids in a medium?

If I have a cuboid block of metal and there is a cylindrical source of heat input (A) and I want to determine the heat energy at B (also cylindrical) how would I do this? I understand considerations ...
0
votes
1answer
32 views

Beam with internal hinge - Reactions help

can someone explain why the highlighted area (at Mb=0) is - 5x2 and not positive? Since the rest of the loads(and the rest of that very same load) pointing down were documented with a +, I dont ...
0
votes
2answers
24 views

Sizing an AC Servo Motor for lifting pallets

I am trying to size a servo motor and my basic physics and math is so rusted that I can't figure out how to go about it? The scenario is as follows: I need to lift an object in the vertical direction ...
-1
votes
0answers
19 views

Meltdown/Spectre attack

What concepts should a newbie(someone who doesn't have too much knowledge about computer architecture, user/kernel space, memory etc.) understand if he wants to know how Metldown/Spectre works? I ...
-2
votes
0answers
9 views

determine the force induced in a rigidly held component that undergoes a change in temperature

A steel bar of length 1m and diameter of 30mm is held in a frame and experiences no stress at 20°C. What will be the stress in the bar if the temperature rises to 80°C and any change in length is ...
1
vote
1answer
56 views

Driving Gearbox in Reverse

https://www.maxongroup.com/maxon/view/product/251601 https://www.maxongroup.com/maxon/view/product/gear/spur/gs45/301171 Consider that this motor-gearbox combination is backdriven so that the motor ...
0
votes
0answers
12 views

Complementary sensitivity function in waterbed effect

I am studying the waterbed effect in control systems, and so I have studeird that from the Bode Integral, if I increase the sensitivity to avoid low frequency disturbances, I have amplification of ...
0
votes
0answers
17 views

Application of thermodynamics [closed]

Air with an initial volume of 0.12m³, pressure 1 bar and temperature 18°C is compressed according to the law pV1.3 = c through a 8:1 compression ratio. It is then allowed to expand isothermally back ...
0
votes
0answers
28 views

Temperature rise of a block of aluminum under constant heat flux

Consider a block of Al. insulated all around except on one side, where a heat-pipe is to be inserted. On the opposite side of the heat-pipe, there's a heat source (Resistor) with a given heat flux. ...
1
vote
1answer
33 views

What 's the function of COMP pin(Pin 3) in LM5030 - Push Pull IC?

I'm a student. Now, I am learning to use LM5030 IC to design a Push-Pull converter. So, I read LM5030's datasheet and can not understand the function of COMP pin (Pin 3). The red line is Feedback ...
1
vote
3answers
31 views

Why do the fan or blower of the Air Conditioner not facing the coil flowing hot liquid?

I observed the fan on external units of air conditioners does not force air towards the hot coil containing hot liquid to make it cooler. Instead it draws air from from the direction of the coil it ...
0
votes
1answer
25 views

what is the range of the measurable relative elasticity with a commonly used strain gauge

I'm looking for a data that what is the typical application range for a common uni directional strain gauge like used in weight scales? I've read about around 200 ppm in a research gate article, can ...

15 30 50 per page