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Recent content by damienmorton

  1. damienmorton

    advice on actuators

    By solid state - I meant really solid state - was initially looking at various materials that expand/contract under electric or magnetic fields. PZT or GMR materials, for example. See http://www.adaptamat.com/technology/ Ill read up on VFD controllers.
  2. damienmorton

    advice on actuators

    Oh - and by the way - the glass is neither half full, nor half empty ... its too big.
  3. damienmorton

    advice on actuators

    The actuator has to be electric - its going to be operating in a retail environment, so as close to solid-state as possible. I had hoped there might be an actual solid state system out there somewhere, a solenoid perhaps, or magnetic clamps, but all of that seems pretty expensive. I see your...
  4. damienmorton

    Lifting platform stage with 4 hydraulic cylinders- How to keep in sync

    Im working on a similar problem, though on a much smaller and simpler scale. The design I currently have involves two compact hydraulic cylinders, spaced about 100mm apart, lifting a platform as distance of about 10mm. Planning on using something like this wrench powered screw-pump...
  5. damienmorton

    advice on actuators

    Er, that should 1500N of force applied
  6. damienmorton

    advice on actuators

    I'm looking for an electrically powered actuator for use with something like a stamping operation. It should have the following characteristics: Needs to travel 10mm in 1s, precision of movement not so important, but should have a soft "landing" at the end of its travel. Needs to apply a...
  7. damienmorton

    functionalised polymer proton donors

    You're right, of course. Eating/drinking the contents is the carnival way to demonstrate safety, aimed at people who's concentrations run out after the first 140 characters of a document.
  8. damienmorton

    functionalised polymer proton donors

    Thanks for your thoughts - really appreciate it. I say that this product needs to be non-toxic, non-hazardous, non-corrosive and non-regulated, because I want be able to walk into a boardroom and demonstrate its safety by eating/drinking some of the contents of the product. The people I need to...
  9. damienmorton

    functionalised polymer proton donors

    Hi - I am working on a product that requires a concentrated acid, but this product must also be non-toxic, non-corrosive, non-hazardous, and non-regulated. I looked into carborane superacid, but this stuff is too exotic and too expensive. Instead, I have been looking into ion-exchange resins...
  10. damienmorton

    measuring the refractive index of glass microspheres

    I have some samples of ultra-high index glass microspheres. The microspheres are in various sizes from 50um to 300um, and the refractive index is reportedly 2.4, but I want to confirm this. The normal way for measuring the refractive index of glass microspheres is to immerse them in an oil of...
  11. damienmorton

    Optical Epoxy with Refractive Index of 1.0008

    The lowest optical index solids I have found are Teflon AF with an index on 1.29. You wont find a solid with an index close to air.
  12. damienmorton

    impact resistance of thin glass on structural backing layer

    RPStress, what did you use to compute the Glass/Ti and Glass/Al stiffnesses? I have been using various online beam bending calculators, but havent found one that works for laminates.
  13. damienmorton

    impact resistance of thin glass on structural backing layer

    Ugh - you're right my numbers are confusing. There are two situations I am trying to model: First is daily use - dropping the thing or throwing it around. Ideally, as a demonstration of its toughness, I'd like to make a video of someone banging nails into wood with the glass face of the...
  14. damienmorton

    impact resistance of thin glass on structural backing layer

    Hi RP, Thanks for your comments. Right now, the substrate is going to be metal - either 2mm titanium or 3mm aluminum. The constraints on the substrate are that it should be thin and have a high yield and microyield strength. Basically, a human being should only be able to permanently deform...
  15. damienmorton

    impact resistance of thin glass on structural backing layer

    Window films generally go on the front face of the glass. In my case the goal of the glass is to provide a scratch-proof surface, and any plastic film on the front face will negate that. The glass I am using is a chemically hardened borosilicate or aluminosilicate glass, and the backing...
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