Properties and Applications Of Nickel Titanium Alloy - PowerPoint PPT Presentation

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Properties and Applications Of Nickel Titanium Alloy

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micrometer. HP power. supply. Experimental Set Up. Data Recorded. Stress-load cell. Strain-micrometer. Diameter-scan micrometer. Resistance-Full Wave Bridge. Data ... – PowerPoint PPT presentation

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Title: Properties and Applications Of Nickel Titanium Alloy


1
Properties and Applications Of Nickel Titanium
Alloy
  • Melissa Read
  • May 11, 2004

2
Agenda
  • Theory
  • Stress and Strain
  • Properties of NiTi
  • Shape Memory
  • Super Elasticity
  • Experimental Set Up
  • Discussion of Data Recorded
  • Data
  • Application Analysis
  • Strain Gauge
  • Heat Engine

3
Stress and Strain
4
Stress vs. Strain
UTS
sY
E
Stress

UTS
sY
E
E
Strain
Strain
Strain
5
Phases of NiTi
6
Shape Memory
7
Super Elasticity
8
Experimental Set Up
50 mm maximum travel micrometer
HP power supply
HP digital multimeters
NiTi super- elastic wire
Laser scan micrometer
S-beam load cell
Calibrated masses
Full wave bridge
9
Data Recorded
  • Stress-load cell
  • Strain-micrometer
  • Diameter-scan micrometer
  • Resistance-Full Wave Bridge

10
Data
  • Yield Stress 0.52 GPa
  • Youngs Modulus Austenite 36 GPa
  • Youngs Modulus Martensite 23 GPa

11
Data
  • UTS 1.26 GPA

12
Possible Applications
  • Strain Gauge
  • Used to measure small changes in length
  • Heat Engine
  • Heat Source

13
Strain Gauge Application
  • Linear relationship
  • Large Displacements

14
Heat Engine Application
  • 0.132 J
  • 455 wires extended once per second to light one
    light bulb

15
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