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Smart materials S hape M emory A lloys

Smart materials S hape M emory A lloys. An educational experience. Scientific background. 1932 A . Ölander discovered the pseudoelastic behavior of the Au-Cd alloy. 1938 Greninger & Mooradian observed phase changes by decreasing and increasing the temperature of a Cu-Zn alloy.

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Smart materials S hape M emory A lloys

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  1. Smart materialsShapeMemoryAlloys An educational experience

  2. Scientific background 1932 A. Ölander discovered the pseudoelastic behavior of the Au-Cd alloy. 1938 Greninger& Mooradianobserved phase changes by decreasing and increasing the temperature of a Cu-Zn alloy. 1960 The U.S. Naval Ordnance Laboratory discovered a new material that exhibited shape memory effect. This alloy was named NiTiNOL NickelTitaniumNavalOrdnanceLaboratory

  3. Scientific background

  4. Setting “original” shape

  5. Actuation: Muscle wire Nitinol Wire Stretched at room temp. Small current returns wire to original length Up to 8% stretch

  6. Applications Railway Signal

  7. Applications Robotic Hand

  8. additional applications

  9. S.m.a.Questions?

  10. references http://www.technologystudent.com/equip1/sma1.htm Shape Memory Alloys (SMA) Martensitic Nanostructure and Recent Applications Development A. Coda SAES Getters S.p.A., Lainate (MI), Italy Shape Memory Alloy National Nanotechnology Secondary School Resource, www.AccessNano.org http://depts.washington.edu/matseed/mse_resources/Webpage/Memory%20metals/applications_for_shape_memory_al.htm http://robertcampbelluas.edublogs.org/shape-memory-metals/ http://en.wikipedia.org/wiki/Inferior_vena_cava_filter http://www.autosplice.com/Product/?id=10043#2-content=2-toggle~~visible-content http://www.furukawa-ftm.com/english/nt-e/appli/index.htm

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