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  1. #11
    D.C.'s Avatar
    Lives in Birmingham, United Kingdom. Last Activity: 05-01-2016 Has been a member for 4-5 years. Has a total post count of 326. Received thanks 27 times, giving thanks to others 24 times.
    A paper comparing the performance of cast iron, steel and epoxy granite.

    http://annals.fih.upt.ro/pdf-full/20...-2012-2-13.pdf

  2. #12
    Nice paper and easy to understand :)

    I notice that although the epoxy granite has less mass for the same stiffness and better damping over steel and iron, it is also physically larger. In most DIY designs I imagine an acceptable size for the beams is chosen first. I'd be interested to see constant beam size vs. stiffness, mass and damping.
    Last edited by Tenson; 04-03-2013 at 01:51 PM.

  3. #13
    D.C.'s Avatar
    Lives in Birmingham, United Kingdom. Last Activity: 05-01-2016 Has been a member for 4-5 years. Has a total post count of 326. Received thanks 27 times, giving thanks to others 24 times.
    I'm not sure if I get what you mean about acceptable beam size, a lot of people seem to design the gantry then increase the beam size because they realise the round rails are too wide to attach to the beams and then decide to add another beam when jazz/jon tell them the gantry is crap and far too weak. ;)

    Am I being dense and missing something obvious like you mean beam length?

  4. #14
    Jon.'s Avatar
    Location unknown. Jon. Last Activity: Has a total post count of n/a. Referred 5466 members to the community.
    excellent find on the vibration paper.. Exactly what i have been looking for. :) TY!

  5. #15
    D.C.'s Avatar
    Lives in Birmingham, United Kingdom. Last Activity: 05-01-2016 Has been a member for 4-5 years. Has a total post count of 326. Received thanks 27 times, giving thanks to others 24 times.
    Another paper on constrained layer damping testing.

    http://ethesis.nitrkl.ac.in/1374/1/M...(207ME109).pdf

  6. #16
    Quote Originally Posted by D.C. View Post
    Optimum column design using honeycombs:
    http://www.iaeng.org/publication/WCE...p1941-1947.pdf
    Cool!
    I'll nip out and and buy a box of Crunchie bars now!
    If you will not be swayed by logic or experience simply pick the idea you
    like best, but ask yourself why you sought advice in the first place and,
    for a simple life, perhaps consider not doing so in future

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