Improved Key Cards

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Improved Key Cards

• By Logan Eddy, Jeffrey S. Hammond and Marcus
  Walters

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SNAP!!
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Research Question

• Which key will withstand more stress, the newer
  composites fiberglass or the older plastic?
• We used four tests to determine this
• Laundry Test
• Three-Point Bending Test
• Hot/Cold Test
• Torsion Test

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Hypothesis

• If we make the keys out of a stiffer, or more
  flexible, material such as fiberglass or
  different plastics, then the keys will be less
  likely to break.

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Hypothesis

• We predict that the fiberglass key will withstand
  the most stress and outlast any of the other
  types of keys.

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Background Research

• Keys were developed over 3500 years ago
• Keys are tools used for opening locks
• The oldest known lock is estimated to be 4000
  years old
• People first started trying to improve keys in
  1778

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Materials List

• Fiberglass Composite
• Hot Water
• Plastic
• Resin
• Hardening agent
• Sand paper
• Freezer
• Tape
• Breather
• Wrapping

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Materials List Cont.

• Ban saw
• Release Film
• Scissors
• Marker
• Tongue depressors
• Paper Cup
• Scale

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Procedure

• Select composite materials and prep tool
• Calculate and mix resin and hardening agent
• Mix resin mixture with fiberglass
• Make bag for composites
• Leave out to cure for at least 24 hours
• Cut out and sand keys
• Test new composite keys

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Procedure
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Laundry Test

• We sent a key through the laundry to find out
  how it would hold up, and if it would still be in
  usable condition.

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Hot Cold Test

• To simulate weather conditions in either Winter
  or Summer, we are going to freeze the cards and
  bend them. As well as heating them up in hot
  water and bending them.

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Three Point Bending Test

• A test in which the edges of the card are held
  and pressure is added to the center to see how
  much the key can bend before it breaks.

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Torsion Test

• The torsion test will show how durable the side
  strengths are and to simulate your card being put
  in your pocket long ways to bend it around your
  hip. The torsion test is just another test used
  to identify the flexibility and durability of a
  key in a different manner.

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Data/Results

• Our key cards have some of the same properties of
  the plastic cards.
• The fiberglass keys and the plastic keys seemed
  to be equal in all the tests.
• The only real difference found is in the way the
  key looks.

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Conclusion

• Our keys work as actual keys, but they arent any
  better than the keys already in use.
• This project helped us to learn about new and
  different possibilities that could be used in
  future testing.

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Future Study

• Other things we would like to test are
• Different materials for the keys such as
• -Kevlar (Impact Resistance)
• -Graphite
• -Metal

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Acknowledgements

• Thanks To
• Mrs. Morgan
• Mrs. Scott
• Ms. Miller
• Mr. Eddy
• Mrs. Gallegos
• Mr. Smith

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Sources

• http//www.tillwite.com/about_keys_locks.asp
• http//inventors.about.com/library/inventors/blloc
  k.htm
• http//science.jrank.org/pages/3989/Lock-Key-Histo
  ry.html
• http//www.plasticsmag.com/article_images/Technolo
  gical20Bend20Test.JPG

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Questions