Jawaharal - Design Inspired by Limpets - Open 2011

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Jawaharal - Design Inspired by Limpets - Open 2011

  1. 1. Limpets – A Biomimicry Approach<br />Lavanya Jawaharlal<br />Diamond Bar High School<br />
  2. 2. Junior at Diamond Bar High School, CA<br />Visited Costa Rica in April 2010<br />stayed in the rainforest for 1 week, near Osa Peninsula<br />Considered to be one of the most bio-diverse places in the world<br />Inspired to learn more about nature  Biomimicry<br />Background<br />
  3. 3. bio - meaning life<br />mimesis – meaning to imitate<br />An attempt to emulate nature’s form, process, and ecosystem<br />nature has already solved many of the problems humans face today<br />Biomimicry<br />http://www.biomimicryinstitute.org/about-us/biomimic.html<br />
  4. 4.
  5. 5. Nature has had more time to evolve and change accordingly<br />Humans have had very little time <br />Nature as a guide<br />Measure, the rightness of the function<br />Mentor and Measure<br />
  6. 6. Adam Nieman<br />
  7. 7.
  8. 8. Nature Inspired Designs<br />Examples<br />
  9. 9. Burr<br />Photo Burr: http://www.mnn.com/health/fitness-well-being/photos/7-ultra-green-extreme-sports<br />Engineering Design: Velcro<br />Plant: has small hooks on the end of the burr needles<br />Mimic: hooks to create velcro<br />Effectiveness: easy attachment for materials<br />
  10. 10. Engineering Design: Zimbabwe building<br />Natural Mound: has a self-cooling system<br />Mimic: the building uses large chimneys like the tunnels in the termite mound<br />Effectiveness: uses 90% less energy to heat/cool the building<br />Termite Mound<br />http://www.portlandhouse.com.au/gallery-029.html<br />
  11. 11. Member of the MolluscaGastropoda family<br />Are found mainly in the mid-intertidal and sub-tidal zones<br />Clings to rocks and uneven surfaces<br />Have an oval-shaped shell<br />Limpets<br />Lavanya Jawaharlal, Costa Rica 2010<br />
  12. 12. Three parts to a limpet<br />Head-foot: contains the locomotion and sensory reception<br />Mass: contains organs<br />Mantle: the outer shell protecting the mass<br />Body Composition<br />http://www.weblearneng.com/limpet<br />
  13. 13. Limpets have not been part of an engineering design<br />How can limpets help us?<br />The strength could be imitated to make fasteners that are optimal and non-toxic<br />*Today, there are adhesives, such as epoxy and super glue, that produce excess waste and toxic<br />*fasteners, like suction cups, can not maintain a grip on uneven or unsmooth surfaces<br />
  14. 14. holding force<br />Multi-terrain clamp<br />cap/plug<br />Applications<br />
  15. 15. Measuring the Force<br />experiment<br />
  16. 16. touch a limpet, the mass and mantle stiffen<br />as tapping increases, the holding force increases (Smith 1991)<br />Response Test<br />
  17. 17. To test the holding force:<br />Tied a thread around the shell<br />Used a spring scale to measure up to 50lbs <br />Smith (1991) designed a similar experiment <br />
  18. 18. Measure force of the waves <br />Lift and drag <br />Find the hydrodynamic forces<br />Simultaneously measure the holding force of limpet<br />Holding force:<br />Use a sensor-based system connected to a computer<br />Load cells<br />Strain gauges<br />The Ideal Experiment<br />
  19. 19. Unable to complete an ideal experiment<br />Experiment can not take place without jeopardizing the limpet’s natural behavior<br />Intertidal zones leave room for a large error of measurement<br />
  20. 20. Thank you teacher (Nature) for the inspiration<br />
  21. 21. http://www.biomimicryinstitute.org/<br />http://www.mesa.edu.au/friends/seashores/limpets.html<br />http://academics.smcvt.edu/dfacey/AquaticBiology/Coastal/Limpets.html<br />Cites Used<br />

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