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Cindy Eppes – Westside Engineering and Geosciences Academy – Westside High School - HISD

Cindy Eppes – Westside Engineering and Geosciences Academy – Westside High School - HISD Dr. Lagoudas and Dr. Davis, Faculty Advisors Lesley Weitz, PhD Candidate. Shape Memory Alloys – SMA’s. SMA’s are metals that remember their shape.

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Cindy Eppes – Westside Engineering and Geosciences Academy – Westside High School - HISD

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  1. Cindy Eppes – Westside Engineering and Geosciences Academy – Westside High School - HISD Dr. Lagoudas and Dr. Davis, Faculty Advisors Lesley Weitz, PhD Candidate

  2. Shape Memory Alloys – SMA’s • SMA’s are metals that remember their shape. • Can recover apparent permanent strains when heated above a certain temperature.

  3. Martensite Low temperature phase Monoclinic Crystal Structure Austenite High temperature phase Cubic Crystal Structure Phase Transformation

  4. Video

  5. Psuedo-elasticity effect Shape memory effect Phase Transformation Effects Eyeglass Frames Staples for clamping bone fractures Orthodontic Arches On-demand airflow Medical Tools Retractor for abdominal surgery Cell Phone Antennae Polymer coated Vascular Stent

  6. Dynamics System for SMA Spring Testing

  7. Spring Data • Students will work in Excel with captured spring data from E3 work. • Standard spring • High stress spring • Low stress spring

  8. Spring Data

  9. Problem/Project Based Lesson • Westside Engineering and Geosciences Academy is focused on technology in the upstream portion of the petroleum value chain. • Problem/Project will be taught across English, Biology, Geometry and Technology.

  10. Pre/Post Test • QuizStar

  11. Student Background • Engineering Camp week of August 4- 8 • Team building – including ropes course • Houston Museum of Natural Science – Weiss Hall • Halliburton Real Time Center • Schlumberger – Drilling Rig Training Facility • Students will have studied the four basic steps in the design process in Technology Systems: • Identifying the Problem • Developing Design Solution • Evaluating Design Solution • Communicating Design Solution

  12. Student Introduction • Day 1 (Regular 50 minute class) • Students will be introduced to the properties of SMA’s and their uses. (Regular 50 minute class) • Class discussion of properties • Video clips • Live demonstration • Day 2 (Regular 50 minute class) • Students will break into groups and conduct mini research on applications of SMA’s. • Students will present findings

  13. Duct tape Clamps Battery Foam tube PVC tubing Cardboard SMA springs and wire Assorted beans Student Introduction • Day 3/Day 4 (Block schedule 90 minute class) • Students will be introduced to the two problems • Video from Black Gold – two scenarios • Valve not closed and drilling MUD poured out on platform • Pressure build up in drilling pipe – possible blow out • Materials

  14. Fence picket Foam tube SMA wire Pinto bean Pressure Release Materials

  15. Duct tape PVC tube Cardboard Pivot brace SMA wire Pinto beans Valve Materials

  16. Assessment – Product

  17. Assessment – Proof of Concept

  18. Assessment - Presentation

  19. Acknowledgements • Dwight Look School of Engineering – TAMU • E3 RET Program • National Science Foundation • Dr. D. Lagoudas and Dr. D. Davis, Aerospace Engineering • Magda Lagoudas, Director Space Engineering Institute • Lesley Weitz, PhD Candidate • P. Kumar, PhD Candidate • Agustin Maqui, Undergraduate

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