LAMS at NTU

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LAMS at NTU

• Paul Gagnon
• Nanyang Technological University
• Singapore

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Edutainment No LAMS does not make them as
busy as Canadian beaversit mightit could
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Now listen up! I know you want to get started
with LAMS.but were going to do this
alphabetically. Damn!!
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Theyre doing it! .I told you you they would
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Engage Establishing Presence
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Engage Creating Purpose
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Engage Responses

• To get to know more about the behaviours of
  polymer.
• To have a better understanding in material
  properties and tests
• to gain a deeper understanding of engrg
  materials.
• Go thorugh the lecture videos.- Attempt the
  online learning activities.- Identify
  areas/topics which I'm not familiar with for
  discussion.
• My goal is to acquire the knownledge in polymer
  for design and application as well as to have the
  engineering concept for the mechanics og polymer.

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Engage Responses

• Firstly to get overview of subject of material
  science which include metal, semiconductors,
  polymers and ceramics.Secondly to study physical
  chemistry or thermodynamics point of view of
  material science.Thirdly, to study more
  specialized area of materials like Solid State
  Physics, Electrocrystallization, nanomaterials
  etc... which are currently at forefront of
  research.
• time management. juggling between school and
  work.

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Activate Prior Knowledge
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Answers

• Both shrink but the shrink wrap shrink more than
  metals
• because of the contraction of polymer chains
  present in the non-crystalline plastic.
• Plastic have molecular structure and metal have
  not.
• As shrink wrap plastic sheet is made of long
  oriented molecular chain. Once When heated, the
  polymer shrinks and then returns to its preferred
  random and disordered structur while in metal
  sheet's case it is made of ordered crystallized
  structure which on heating will not shrink as
  much as wrap plastic shrink .
• generally, metal is composed of crystal and the
  interation between atoms is matallic bond, while
  the interaction betwwen the intermolecular chain
  of polymer is covalent bond and interaction of
  individual molecular chain is always Van'De
  Wallce foece or hydrogen bond, which is much
  weaker than metallic bond and covalent bond

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Activate Prior Knowledge
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Demonstrate
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Apply Knowledge
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Apply Knowledge

• A-site vacancy
• O-site vacancies
• A B-site vacancy would be formed. PLZT is ABO3
  perovskite structureA site ion is Pb and La,
  (1-x)x1, no A-site vacancyB site ion is Ti
  and Zr, (1-y)y(1-x/4)lt1, would form B-site
  vacancy.
• There is no vacancy in this kind of PLZT.
• B-site cationic vacancies.

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Apply Knowledge

• Plastic deformation occurs by the unfolding and
  bending of the molecules in a deformation region.
  The unfolding of the molecules or the breaking
  off of folded-chain blocks and the incorporation
  of these blocks into the deformed material, shows
  the role of molecular chain in plastic
  deformation.
• Yes. Integrated area under stress-strain curve
  is the toughness of the material.

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Integrate Knowledge
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Integrate Knowledge

• So that we are able to determine the root causes
  to mechanical failures that will allow us to
  design more robust, reliable and safe machines.
• Despite design allowances,components still fail
  in service because the operating conditions
  produce brittleness,fatigue,creep,wear,environment
  al attack etc.,which,if ignored lead ultimately
  to failure.Otherwise,losses from corrosion's
  cost are very expensive.If we are understand
  about failures,we can make safely factor,better
  and better design structure and essential
  prevention
• When we want to design something, for example
  aeroplane, it is very important for us to have
  deep understanding about failure mechanism in
  materials that are used in aeroplane. So we need
  deep understanding about failure to design
  something.

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DE Student Survey I
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DE Student Survey II
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ThanksQuestions ???

• Paul Gagnon
• pgagnon_at_ntu.edu.sg
• Phoebe Jacobsen
• phoebe_at_ntu.edu.sg
• Nanyang Technological University
• Singapore

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Ok Folks!..... Its a wrap