What are interesting/cool topics about material deformation?

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Discussion Overview

The discussion revolves around identifying interesting topics related to material deformation and fracture, specifically focusing on microstructure. Participants seek suggestions that would engage a lay audience for a presentation.

Discussion Character

  • Exploratory
  • Conceptual clarification

Main Points Raised

  • One participant suggests exploring the phenomenon of spaghetti breaking, which could be an engaging topic.
  • Another participant elaborates on the spaghetti breaking concept, noting that applying a twist can influence how it breaks, potentially leading to fewer pieces.
  • A different participant introduces Nitinol, a shape memory alloy, highlighting its unique properties and applications as a potential topic of interest.
  • Another suggestion involves auxetics, materials that behave oppositely to conventional materials under tension and compression, which could provide a fascinating angle on deformation.
  • A participant references videos on shape-changing micro robots and bending machines, indicating these could serve as interesting examples related to material deformation.

Areas of Agreement / Disagreement

Participants present multiple competing ideas for topics without reaching a consensus on a single focus. The discussion remains open-ended with various suggestions being explored.

Contextual Notes

Participants emphasize the need for topics that are accessible to a lay audience, which may limit the depth of technical detail that can be included in the presentation.

ENGBIO
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Hey guys, so I have to give a 10 minute presentation for my class. I am absolutely terrible at memorizing stuff. Its pretty bad. If I can find an interesting or cool topic I would be able to remember material better.
It needs to be about deformation or fracture of a material in terms of micro structure.

Are there any topics you guys know about the would be interesting to a lay person?
 
Engineering news on Phys.org
How about spaghetti breaking?

 
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More on spaghetti breaking where applying a twist can allow the spaghetti to break in two pieces instead of three or more:

 
ENGBIO said:
It needs to be about deformation or fracture of a material in terms of micro structure.
Have you learned about Nitinol yet ("shape memory alloy")? Very interesting material, with some unique applications...

https://www.memry.com/intro-to-nitinol

https://en.wikipedia.org/wiki/Nickel_titanium
 
What about auxetics ? They deform in opposite manner than regular materials - when subjected to tension they become thicker and when subjected to compression they become thinner.
 
Veritaseum had this video on shape changing micro robots:



and this one on bending machines:

 

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