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Will silicon adhere to epoxied fiberglass tank

I use water retention tanks withs inner shell of blow molded HDPE and outer shell of wrapped fiberglass/epoxy. The tanks get UV damage pretty quickly. Will silicone coating adhere to the outershell? ...
JimiH20's user avatar
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0 answers
5 views

Bearing capacity using the handheld cone penetrometer

I would just like to ask if I calculated the cone resistance (manometer reading/base area) for soil using a handheld cone penetrometer, is the cone resistance already the bearing capacity, or how can ...
kitkat's user avatar
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0 votes
1 answer
19 views

Making a mini-cooler for my girlfriend, NEED HELP?

I am just a noobie in engineering stuff and I was trying to make a fun project, mini cooler sort of for my gf (bcz her hostel does not provide AC) with peltier module and needed help in some of the ...
SUMIT YADAV 2K21A759's user avatar
0 votes
1 answer
22 views

Engineering Dynamics Problem: Torque Comparison for Single Rod in Upward vs Downward Swing

I am currently researching the upward and downward swinging motions of landing gear mechanisms. I aim to determine whether there is a torque difference for the rod during the upward and downward ...
HHL's user avatar
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0 answers
27 views

Which mate should I choose for the next two parts?

There are two such parts in Solidworks. I need to put the ball into the dent and have it rotate there in all directions. But SW says that he does not have suitable mates for this. How to solve a ...
ayr's user avatar
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0 votes
1 answer
13 views

Build a Tx Rx USB LED indicator

I want to make a indicator LED light which would blink when there is data flow from the computer to the storage drive. I have checked using a multimeter that whenever data flows there is a voltage of ...
user10897549's user avatar
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0 answers
26 views

Would a pure homopolar DC electric motor be possible by using a partially twisted pair wire?

For the past few days I have been working on a conceptual design of a pure homopolar DC electric motor and I am at a point in which I would like someone to verify if I am correct concerning a key ...
WaterSparkle351's user avatar
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0 answers
12 views

Pipe Hanging Support with Tee slab

How can I install pipe hanging supports with double tee slab as slab thickness is not enough to install a wedge anchor?
Saad's user avatar
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0 votes
1 answer
26 views

How to find the stroke and bore of a tractor engine

Given that a 4-stroke and 4-cylinder diesel engine have a ratio between its stroke and its bore as 6:5. The engine operating at 2000 rpm uses 7.5 liters of fuel and 240 kilo liters per hour of air. ...
MICHAEL UMANDE's user avatar
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0 answers
9 views

Non-Linear grey box model Quadrotor system identification Matlab

I have been working with a commercial flight computer and have adjusted the gains of my controller. However, I want to perform a more in-depth analysis, which requires finding an appropriate model to ...
David Nieto's user avatar
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0 answers
24 views

How to make the clamped attachment move in two directions?

In the below attached image link, I would like to move the clamped attachment (clamps shown in yellow color), in two directions (shown by red arrows). What kind of motor and joint arrangements should ...
Swati Shah's user avatar
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0 answers
10 views

5 axis CNC Milling (Conical Hole on a Cube)

Dear Community, I am using Camworks Software by Solidworks. I want to mill a conical hole on a cube. This means that the tool have to be tilted to carve out the shape of the conical curve area, which ...
Maximus Su's user avatar
1 vote
1 answer
45 views

Is this the right side to crimp the spade connector?

I used to crimp non insulated spade connectors by pressing the side of the seam with the crimping tool tooth. Then,i saw in youtube that the proper way(?)is to press the other side of the spade,as you ...
Gary's user avatar
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0 answers
11 views

Why is my connection over ASDL better with a vpn?

I notice that the quality of my connection over ASDL seems better when I'm connected to a VPN. Is there any specific reason to this ?
ElGrosNico's user avatar
-1 votes
0 answers
9 views

Lincoln 210mp welder replace the 6pin plug board to on/off switch part

Lincoln 210mp welder 6 pin x4 wiring plug from control board to on/off 4 wire plug
Davinder Purewal's user avatar
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0 answers
13 views

Pivot Hinge for Glass Panel

I have a pane of 6mm toughened glass that is 2 m high, 0.7 m wide and weighs 21 kg. I've been trying to find some pivot hinges that can handle this glass and also pivot at the corner of the glass. All ...
user1227445's user avatar
0 votes
1 answer
35 views

How to calculate clearance volume in internal combustion engine of a tractor?

To begin with, a tractor engine is provided to identify and calculate the terminologies associated with it. The bore diameter and stroke length is given as 15.84 cm and 8 cm respectively. Having ...
MICHAEL UMANDE's user avatar
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0 answers
11 views

Weird beep when using audio interface

I’m experiencing this very weird beep which randomly (usually with a maximum interval of 5 minutes between occurrences) comes out when connecting my guitar to the PC through my M-AUDIO MTrack II Plus ...
ela's user avatar
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0 answers
24 views

Energy balance approach to understanding pool water total evaporation

I had a thought and I'm looking for affirmation and/or additional understanding. Introduction I'm working on a project where I'd like to understand how much water should be expected to evaporate from ...
Lalo's user avatar
  • 1
0 votes
1 answer
13 views

Where to find Ball and Revolute Joints with friction

I am new to design. Where do I find bearing joints that stay put? Suppliers? I am looking for. A ball joint that has friction so that it stays put after it is moved. I was looking at modeling one ...
Max vonNiederhausern's user avatar
0 votes
1 answer
7 views

How Do Length of Pylon and Rotor Disk Radius Impact Angular Frequency and Torsional Stiffness in Whirl Flutter Analysis for a 2 DOF Propeller System?

Actually, I'm having trouble implementing the plot of the flutter region for the whirl prop system with 2 DOF (Influences of structural damping and propeller—pivot point distance on whirl flutter ...
Ookin Etemadi's user avatar
0 votes
0 answers
34 views

Help understanding Engineering diagram

My problem basically boils down to the fact that based on my reading of this diagram, N = G + H, but based on the table of dimensions, it is not true. The diagram is from this document (OIML R 49-2 ...
Sudhakar Jannu's user avatar
0 votes
0 answers
17 views

Does an array of Peltier module need a diode between each module?

I have a bunch of Peltier module that I wish to connect in series/parallel and use them as a thermopile generator. However I was wondering if its necessary to attach a diode between each module to ...
Philip C's user avatar
0 votes
1 answer
30 views

Is it possible to infer how much power is flowing through a power line from the ground?

I have a power line near my house, and for a while now I have been wondering if I can know how much power is being transmitted along that line at a particular time, and in which direction. I could ...
Alfred Rodenboog's user avatar
0 votes
0 answers
26 views

Calculation of residence time in a continuous stirred tank reactor (CSTR)

Residence time tells us about the time reactants spend in a reactor. In a CSTR, spacetime is given by consumption upon consumption rate at the exit. Why do we take the rate at the exit only and not ...
trisha ghosh's user avatar
0 votes
1 answer
19 views

Stress relieving copper at 200°C for 2 hours

I'm not a material scientist, but I have some deep drawn electrolytic copper parts 99.9% that generally fold or don't bend very well or consistently when post processing in their drawn form. The ...
Dingus's user avatar
  • 1
0 votes
0 answers
12 views

Does the length of the pylon and the radius of the rotor disk impact the angular frequency or stiffness? If so, what would the relationship look like?

I've defined the moments of inertia as follows but not sure: J0yaw = 1/4mRp^2; % Mass yaw moment of inertia J0pitch = 1/4mRp^2; % Mass pitch moment of inertia J0roll = 1/2mRp^2; %Mass roll moment of ...
Ookin Etemadi's user avatar
0 votes
0 answers
20 views

What is the failure mode of fiberglass rods in bending?

I have access to a bunch of used FRP rods, 1" in diameter x 40 feet long with metal ends. I do not know yet if the plastic part is conventional polyester resin or nylon. In normal use these rods ...
Sherwood Botsford's user avatar
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0 answers
17 views

How to determine wedge angles, stagger angles, pitch, and chord for axial turbine mean-line modelling?

I would like to measure the performance and optimize the design of an axial turbine using mean-line modelling. However, most of the optimization codes I found on GitHub require wedge angles, stagger ...
Emotional Damage's user avatar
0 votes
0 answers
13 views

Zero Stiffness Matrix

Consider a material pressure cylinder that is considered 'broken', it has a stiffness matrix of zero, at time t = 0. Now assume that a gas was inside that cylinder, and initially offered no pressure ...
Jack's user avatar
  • 21
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0 answers
4 views

Help on Abaqus Mesh Partition

Hello everyone, I'm currently working on a project involving the simulation of a balloon(?) using Abaqus. I am facing some issues with partitioning the mesh, specifically at the bottom part of the ...
Studio MuKoSe's user avatar
0 votes
1 answer
19 views

Stick welder polarity

Can anyone tell does stick welder (in general) has limitation on weather it can weld dc positive or dc negative (stick holder being positive or negative). Or it all comes to exchange of electrode ...
user505160's user avatar
0 votes
0 answers
19 views

Simulation of the gyroscopic effect in SolidWorks Motion

Has anyone tried to simulate the gyroscopic effect in SolidWorks Motion? Is the effect reproducible? Share your knowledge and experience, please. EDIT: I was trying to get something like this. https:/...
ayr's user avatar
  • 232
1 vote
0 answers
36 views

How to calculate required force needed to compress paper waste for a waste baler?

I just wish to understand an approach to designing the necessary amount of compression force needed for a waste baler
Yayaman's user avatar
  • 11
0 votes
0 answers
17 views

How to derive the expression for number of teeth in virtual spur gears

Several literary sources express the number of teeth of a virtual gear by the following equation $$ z_v = \frac{z}{\cos^3 \beta} \tag{1} $$ where the derivation is based on the radius of osculating ...
Richard's user avatar
1 vote
2 answers
31 views

Assuming sufficient electrical power, is an electrolysed oxyhydrogen rocket practical?

Assume we have access to light electrical power e.g. a (hypothetical) small fusion reactor. Is it practical to operate a water-fuelled rocket, in which water is converted to hydrogen and oxygen (or ...
Louise's user avatar
  • 111
0 votes
0 answers
25 views

What does the inside of an external wall look like?

I want to be able to simulate heat transfer through a wall, and to do that I need to know what the anatomy of the wall I'm simulating is. Preferably be simple e.g 1/2 inch ply wood to 4 in of fiber ...
Hao Lin's user avatar
3 votes
3 answers
76 views

Static analysis of a four-bar linkage

I have a four-bar linkage of known geometry (all angles, lengths, etc.) and I'm trying to solve for the required force to balance an input force. Per this diagram, the input force (Fc, perpendicular ...
Mandias's user avatar
  • 143
0 votes
0 answers
32 views

Pressure gauge on flow test pipe reading zero, why?

I'm trying to determine the cv values for water of a collection of 90-degree 4-inch elbow valves, and one of the things I need to determine this for a particular flow rate is the input and output ...
Judd's user avatar
  • 1
0 votes
0 answers
24 views

how to choose the control algorithm for tracking

I am currently trying to understand the concept of resolver to digital conversion from the web. After going through datasheets and appnotes,i concluded that companies use two algorithms for resolver ...
gari's user avatar
  • 61
0 votes
0 answers
20 views

Which Timber LOK screws to reinforce shallow ridge, and how many?

I bought a tiny house shell that still needs some rafter reinforcement. I have chevron-shaped gussets from 1/2'' plywood that I'm going to glue and nail on either side of the middle gambrel joint on ...
abalter's user avatar
  • 101
0 votes
0 answers
16 views

How to model fibre reinforced concrete on LUSAS?

As part of my dissertation, I need to cross verify my finite element analysis results using LUSAS using some experimental results, and although i can find some stress-strain relation in some articles, ...
Mehdi Bejkar's user avatar
0 votes
0 answers
13 views

thermoelasticity problem with FEM

Hello I want to find distribution of temperature, and stress in cylinder with inner and outer temperature and pressure , I used linear elements with 3 nodes and wrote matlab code, moreover I want to ...
Chakad's user avatar
  • 1
0 votes
0 answers
32 views

Way to measure volume of hole scanned by 3D laser device and CAD

I'm not a mechanical engineer so please let me know if my question is not clear. There is a hole generated on a pipe wall as shown in the upper figure. I would like to measure the volume of the hole ...
Kinnikuman's user avatar
0 votes
0 answers
19 views

How to Improve Adhesion of Velcro to Plastic Suction Cups in Hot Climates

I am currently facing an issue with a product where Velcro is attached to plastic suction cups using adhesive. The Velcro tends to detach from the suction cups, especially in hot climates. Here are ...
Chris Super's user avatar
0 votes
0 answers
7 views

Is it possible to enable RDP via poking a system drive directly? Corrupted graphics driver

I have a Laptop that briefly shows artefacts on the screen then goes blank before the logon screen. Its a HP 14-cm0000 laptop and I think the graphics driver is corrupted. Judging by the disk activity ...
Jason Ryan's user avatar
0 votes
1 answer
29 views

Could barrel overheating be solved with magnets?

I was wondering whether overheating of guns could be solved by magnets? Coming from a country where firearms are pretty much only available for the police, military and criminals, I don't really have ...
JanWillem's user avatar
  • 101
0 votes
1 answer
35 views

Can my charger handle this?

I am trying to put 230 V dc on the ISDT 608dp charger for my FPV drone batteries (I don't know if this is the right form). This is the link: ISDT 608DP. Can my charger handle this? AI says it can but ...
DyLn's user avatar
  • 1
1 vote
2 answers
104 views

Which language is used to program a PLC?

I want to learn the PLC and its programming, please let me know which language should be used?
Daniel's user avatar
  • 11
0 votes
0 answers
34 views

Kinetic Procedure Data in PRO II Software

I am currently using PRO /II to simulate NH3 decomposition for a school project, and currently have been trying to input the reaction kinetic (https://imgur.com/OYqfiQE) to the Procedure Data. I ...
ralfanino's user avatar

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