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  1. LeonhardEuler

    Bolt assessment help

    It’s hard to picture your arrangement. Try posting a figure.
  2. LeonhardEuler

    AISC B3.3

    Agree, this is a case where plastic redistribution is possible. I’m curious if there are any serviceability concerns in your design
  3. LeonhardEuler

    Locking a Rotating Piece

    IRStuffcan you elaborate on the ballpoint pen mechanism?
  4. LeonhardEuler

    Steel NDT

    I'm trying to figure out what type of damaged I should be worried about and how I should check for it. There's concern that the material might be damaged and I need to suggest what should be done to ensure it is safe, whether that be give an explanation why there is no concern, or suggest a...
  5. LeonhardEuler

    Steel NDT

    So let's assume the component was hit hard enough to cause some microcracking and it will see fatigue loads through its lifetime. I need to check the material to check if there is damage and the extent of the damage. I will be able to take the material off site and test it, but would rather not...
  6. LeonhardEuler

    Steel NDT

    There are 3 high strength hinges that support the whole structure
  7. LeonhardEuler

    Steel NDT

    The situation I have is a hinge on a cantilevered structure that shows no visible damage. I suppose the concern would be that there could be micro fractures developing in the material that could grow over time? From what I’ve read ultrasonic testing should be able to check for this
  8. LeonhardEuler

    Steel NDT

    I have a high strength hardened 4140 steel component that has been struck with a hammer during install and there is concern that the material may have been damaged. What would be the best type of NDT to do on this component to make sure the material isn't damaged. Would ultrasonic testing be...
  9. LeonhardEuler

    Locking a Rotating Piece

  10. LeonhardEuler

    Locking a Rotating Piece

    I am designing an apparatus that has to rotate out from a hidden position in a deck plate and then be locked into place at a certain angle. I have considered designing a system much like you see on adjustable weight benches where there is an arm that hangs down and it hits a notch at certain pre...
  11. LeonhardEuler

    Threaded Insert

    I am aware of these installation options, but my problem is that the bolt will be going through a two structural flanges and will actually be a blind install. Being installed into HSS isn't my only problem. The user will have to be able to locate the threaded fastener without seeing it each time...
  12. LeonhardEuler

    Threaded Insert

    I need the nut to be floating for a blind install
  13. LeonhardEuler

    How does this fastener work? I was

    I took part of it apart. It’s a stepped shaft that pushes on the face of the rack. Still not sure how the spring is holding on to the bolt so we’ll though.
  14. LeonhardEuler

    Threaded Insert

    I’m looking for 1/2” and I have to cut a hole in a steel HSS to house it, so I need a round shape
  15. LeonhardEuler

    How does this fastener work? I was

    How does this fastener work? I was working out and looked at this squat rack adjustment. It seems to have a spring attached to the bolt to not allow it to pull out of its housing. As you can see there are threads only at the end near the handle and the holes in the rack it “connects” to are...
  16. LeonhardEuler

    Threaded Insert

    Thank you, bummer that they don't seem to have them in larger sizes.
  17. LeonhardEuler

    Threaded Insert

    Has anyone seen any of these threaded inserts with a "toggle nut" and know where I could purchase some? Thank you.
  18. LeonhardEuler

    "Standard" HSS beam to W Column connection

    I will post a better drawing of the system tomorrow. Thank you all for the comments so far
  19. LeonhardEuler

    "Standard" HSS beam to W Column connection

    I still don't feel comfortable using a W-shape for a beam experiencing considerable torsion.
  20. LeonhardEuler

    Steel Research Topics

    I am in a graduate course for Advanced Steel Design and have a research paper to write for the course. I can pick the topic of my research and I thought that the engineers here may have some interesting research ideas. What are some interesting research ideas you have related to steel design?

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