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.

Can recover apparent permanent strains when heated above a certain temperature.

Phase Transformation

Martensite Low temperature

phase Monoclinic Crystal

Structure

Austenite High temperature

phase Cubic Crystal

Structure

Video

Phase Transformation Effects

Psuedo-elasticity effect Shape memory effect

Eyeglass Frames

Cell Phone Antennae

Orthodontic Arches

Medical Tools

Retractor for abdominal

surgery

Staples for clamping bone

fracturesOn-demand airflow

Polymer coated Vascular Stent

Dynamics System for SMA Spring Testing

Spring Data

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

Spring DataRegular Spring

-14

-12

-10

-8

-6

-4

-2

0

2

0 5 10 15 20 25

Displacement of Mass

Tim

e (0

.03

sec)

Series1

High Stress SMA Springs

-4

-2

0

2

4

6

8

10

0 5 10 15 20 25

Displacement

Tim

e (0

.03

sec)

Series1

Low Stress SMA Springs

-10

-8

-6

-4

-2

0

2

0 5 10 15 20 25

Displacement

Tim

e (0

.03

sec)

Series1

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.

Pre/Post Test

QuizStar

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

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

Student Introduction

Duct tape Clamps Battery Foam tube

PVC tubing Cardboard SMA springs and wire Assorted beans

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

Pressure Release Materials

Foam tube

SMA wire

Fence picket

Pinto bean

Valve Materials

PVC tube

Pivot brace

SMA wire

Duct tape

Cardboard

Pinto beans

Assessment – Product

Assessment – Proof of Concept

Assessment - Presentation

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