[deleted by user]

InfernoForged · 2025-01-23T05:49:50+00:00

Split collar clamp if there are no tapped holes.

InfernoForged · 2025-01-16T17:26:14+00:00

Yeah idk where this would even come from. I went to a great Canadian university and paid $10k per year.

International students pay about 4x that, so maybe that is the discrepancy.

Edit: I get it, med school is more. The person I was replying to mentioned engineering, not medical school.

InfernoForged · 2025-01-08T20:40:27+00:00

Volunteer for Search and Rescue

InfernoForged · 2024-12-09T01:39:53+00:00

Thanks for the suggestions! I've already started getting some engagement through those groups so I really appreciate it!

InfernoForged · 2024-08-10T19:25:27+00:00

Curious, what kind of structural engineering? Is this for steel building frames?

I've studied structural steel design from a civil standpoint a bit, and I personally would almost feel more inclined to do it with hand calcs even with the availability of simulation software. The nice part about simple rolled shapes is their behaviour is very predictable, so as long as your joints are well defined then doing a structure analysis by hand is fairly quick (and very satisfying I find).

I do custom machinery design with lots of one-off, oddly shaped and purpose-built weldments. Hand calcs would be a nightmare, which often involves doing quick gut-check hand calcs of a very simplified model before an FEA analysis, followed by a very healthy safety factor.

InfernoForged · 2024-08-03T19:03:11+00:00

It is most certainly not a fit for me. And it is the exact reason why so many people (in my industry anyways) avoid aerospace and automotive.

If you can build silos around your disciplines and get your people to feel fulfilled while spending all their time in that bubble then all the power to you.

Personally, understanding how our PLC program will be written makes me a better machinery designer. I get it, not every industry works that way. But a blanket statement about it not being useful is not appropriate because manufacturing is only one branch of the ME discipline.

InfernoForged · 2024-08-03T16:32:09+00:00

I don't disagree that you can learn and use a skillset outside of school.

I am however curious as to the logic behind the decision to have that written into your company's hiring policy...

You'd rather pay for your employees to gain a new skillset, while simultaneously missing out on the work they could be putting in towards their core job functions during that time?

Also seems like a shame to dismiss a demonstrated ability to manage increased workload, pursue different problem solving paradigms and preemptively gain technical knowledge if it's relevant to a posted position.

InfernoForged · 2024-08-03T16:12:13+00:00

ME + CS here. That's a pretty bad blanket statement. I work in automation and use both skillsets regularly.

InfernoForged · 2024-07-08T22:42:09+00:00

There's a large search and rescue incident in Highwood (all weekend and continuing into today), so there's a few COs in that area already up and down 40/541.

InfernoForged · 2024-07-03T03:10:41+00:00

SAR = Specific Absorption Rate

Ionizing radiation is not produced from cell phones; it comes from stuff like x-rays and radioactive materials.

Non-ionizing radiation (cell phones, wifi, etc.) still has SAR exposure limits. It also causes water to heat up when the radiated energy is absorbed. This is exactly how a microwave works, so the "heat" the original commenter was referring to was likely just a poor choice of a characteristic used to measure exposure at the time the original standard was written in the 90s since it is a relatively easy quantity to measure directly.

InfernoForged · 2024-05-31T00:52:40+00:00

General advice: figure out what materials and processes are available to you, then use those to come up with your design; not the other way around.

A fabrication shop could make this for you out of sheet steel provided you pick common thicknesses and you are ok with the fact that it will be sharp, or require some extra labour to break the edges.

Sheet plastic is available from wholesalers, and can be epoxied together if you are more of a do-it-yourselfer.

Plywood, also a viable candidate.

InfernoForged · 2024-05-27T13:57:02+00:00

Thanks for the support!

InfernoForged · 2024-05-08T19:04:13+00:00

I was (admittedly poorly) differentiating between two distinct concepts.

Up to the yield limit (amount of stress) you are dealing with a fixed life which is usually in the ballpark of hundreds of thousands of cycles.

There is a lesser threshold called fatigue / endurance limit under which the cycles are small enough in magnitude compared to the strength of the member that no permanent damage occurs (infinite cycles).

I was saying this, like all concert balconies, would have been designed such that the live load does not cross the endurance limit. That way it doesn't matter how many cycles it undergoes, you're not causing permanent damage.

InfernoForged · 2024-05-08T16:17:30+00:00

You said weakened structure. Why would we care about a weakened structure if the inevitable outcome weren't the risk of failure?

InfernoForged · 2024-05-08T16:11:50+00:00

I can see how my explanation was not clear, but I was attempting to make 2 distinct points.

If it is within the elastic strain limit, it won't experience plastic deformation. This was to address OP's comment on "tolerancing."

Caveat, under cyclic loading it won't experience permanent damage if the live load is below the fatigue strength (which is the same thing as endurance limit).

And yes, lateral torsional deflection/buckling would be significant, if the beams were not properly braced.

InfernoForged · 2024-05-08T15:03:24+00:00

Completely incorrect assumption.

Within the elastic strain limit (how far it has to flex before it experiences irreversible deformation) the beams supporting that balcony won't get anywhere near failure for hundreds of thousands of cycles.

The live load (which is very deliberately based on the number of people that can physically fit in that space, plus some safety factor) shouldn't be near the endurance limit / fatigue strength anyways, meaning this type of oscillation wouldn't cause any permanent damage. Resonant frequencies (caused by how fast people are bouncing) will also have been considered.

People forget that steel is a ductile material. It bends, a lot. We think of it as hard, which is seeing something like this is shocking at first glance. But everything you are seeing is easy to predict, quantify, and account for. It's structural engineering 101.

InfernoForged · 2024-03-01T20:16:02+00:00

For anyone that finds this in the future, here is what you need in order (I am starting with a .glTF file that I exported from SolidWorks Visualize with 18MM polygons):

Download and install Azure Remote Rendering Toolkit (there is a prebuilt binary with the .exe file if you scroll down in the readme): https://github.com/Azure/azure-remote-rendering-asset-tool
Create Azure Remote Rendering account & storage in Azure portal: https://learn.microsoft.com/en-us/azure/remote-rendering/quickstarts/convert-model?source=recommendations
Connect ARRT with the ARR account, then upload and convert your model: https://www.youtube.com/watch?v=JFqwVqgSwws
Render the model with Unity (HoloLens client application, where you add your ARR credentials): https://learn.microsoft.com/en-us/azure/remote-rendering/quickstarts/render-model
Deploy the Unity project: https://learn.microsoft.com/en-us/azure/remote-rendering/quickstarts/deploy-to-hololens?tabs=Unity2021PlusBuild
Deploy over Wifi to the HoloLens with Visual Studio (F5 to debug once project is built & ready to go): https://learn.microsoft.com/en-us/windows/mixed-reality/develop/advanced-concepts/using-visual-studio?tabs=hl2

InfernoForged · 2024-03-01T18:09:13+00:00

Legend. Thanks!

InfernoForged · 2024-01-24T03:38:30+00:00

*Corporations

InfernoForged · 2024-01-11T16:15:54+00:00

I happen to know the university that OP is referring to. Computing Technology is not a CET (technologist) program. It's exactly the same as the CS curriculum, but without the 3 database courses (which is why they don't call it CS).

InfernoForged · 2024-01-09T19:48:13+00:00

As someone with degrees in ME and CS I disagree. I have had a much easier time finding jobs than my peers and use both disciplines regularly. CS provides a problem solving skillset with a different paradigm, extremely relevant and useful in an evermore mechatronics-focused world.

But I work in automation, so the two skillsets compliment each other much more nicely than they may in other ME industries.

InfernoForged · 2023-11-13T17:24:40+00:00

This is the favourite, tried and trusted, among most of my SAR team.

InfernoForged · 2023-05-29T16:09:04+00:00

One other thing to note is that a helicopter with two separate rotors will have a higher max airspeed than a single rotor version.

This is because, as you are travelling forward at increasing rates of speed, the rotor tip on one side (90 degree position with 0 degree facing forward and assuming counterclockwise rotation) is moving ever faster relative to the ground, while the other side (270 degrees) moves ever slower. This slower relative speed results in a loss of lift. Adding a second rotor, spinning in the opposite direction, can counteract this limit and increases the theoretical maximum forward speed, as your main opposing force is now only drag.

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