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Proceedings Paper

Recoverable stress induced two-way shape memory effect on NiTi surface using laser-produced shock wave
Author(s): Dovletgeldi Seyitliyev; Peizhen Li; Khomidkhodza Kholikov; Byron Grant; Zachary Thomas; Orhan Alal; Haluk E. Karaca; Ali O. Er
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Paper Abstract

The surfaces of Ni50Ti50 shape memory alloys (SMAs) were patterned by laser scribing. This method is more simplistic and efficient than traditional indentation techniques, and has also shown to be an effective method in patterning these materials. Different laser energy densities ranging from 5 mJ/pulse to 56 mJ/pulse were used to observe recovery on SMA surface. The temperature dependent heat profiles of the NiTi surfaces after laser scribing at 56 mJ/pulse show the partially-recovered indents, which indicate a "shape memory effect (SME)" Experimental data is in good agreement with theoretical simulation of laser induced shock wave propagation inside NiTi SMAs. Stress wave closely followed the rise time of the laser pulse to its peak values and initial decay. Further investigations are underway to improve the SME such that the indents are recovered to a greater extent.

Paper Details

Date Published: 17 February 2017
PDF: 5 pages
Proc. SPIE 10092, Laser-based Micro- and Nanoprocessing XI, 100921J (17 February 2017); doi: 10.1117/12.2252504
Show Author Affiliations
Dovletgeldi Seyitliyev, Western Kentucky Univ. (United States)
Peizhen Li, Univ. of Kentucky (United States)
Khomidkhodza Kholikov, Western Kentucky Univ. (United States)
Byron Grant, Western Kentucky Univ. (United States)
Zachary Thomas, Western Kentucky Univ. (United States)
Orhan Alal, Western Kentucky Univ. (United States)
Haluk E. Karaca, Univ. of Kentucky (United States)
Ali O. Er, Western Kentucky Univ. (United States)

Published in SPIE Proceedings Vol. 10092:
Laser-based Micro- and Nanoprocessing XI
Udo Klotzbach; Kunihiko Washio; Rainer Kling, Editor(s)

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