Jump to content

peter tilbury

Members
  • Posts

    82
  • Joined

  • Last visited

Posts posted by peter tilbury

  1. peter tilbury,

    The definition I learned of malleability in high school science classes (am not an engineer,

    http://www.engineersedge.com/material_science/malleability.htm

    Regards,

    John Kettler

    Yeah, the link seems to suggest what I have slowly come up with myself. Ductility involves tensile forces and malleability involves compressive forces, but both demonstrate plasticity and therefore malleability is plasticity involving compresseive forces wheras ductility is plasticity involving tensile forces.

  2. I think the rubber ball analogy is simply wrong. Plasticity as far as I am aware is the ability of a material to undergo deformation when subject to force and to remain in its new shape after the force is removed. That is not the rubber ball. I'm perfectly clear on what ductility and malleability are; it is the relationship with plasticity that concerns me. I think, in fact, I have answered my own question, as malleability and ductility seem to be subdivisions of plasticity. As far as I know, the opposite of brittle is toughness.

  3. quote: Plasticity is a measure of how readily something can be deformed and then will return to it's rest state without damage. For example, squeeze a rubber ball, it will deform, then spring back when the applied force is released.

    Isn't this a definition of elasticity? I've been thinking about this; aren't malleability and ductility merely forms of plasticity? Each taking a different take on the forces involved, compressive for malleability and tensile for ductility?

  4. Could anybody tell me the difference between plasticity and malleability? The books I have compare elasticity with plasticity and malleability with ductility, but plasticity seems, for a non-engineer like me, to have a lot in common with malleability, so what is the difference. Thanks in advance for any help.

  5. My son appeared on the internet page of his football team with photo and name. I didn't quite like to idea myself, but everybody in the club had it done so he didn't want to miss out. The team has now been reorganised and the page removed. However, if you google his name and club it still appears in the results and can be accessed. I don't like this at all. Is there any way of removing the page for good?

  6. Agree. Allies win strategically and operationally - which is what counts. The game concentrates on the tactical aspect where the Germany excelled. These much vaunted Übertanks squander resources that could be used more effectively elsewhere, strategically in submarine production perhaps. Then again no tank is an Übertank. You have to play to your strengths no tank is an übertank if you play against it right.

×
×
  • Create New...