Manufacturing of shape memory alloy based monolithic functional structures with shape memory effect properties

Kostyantyn Malukhin*, Kornel Ehmann

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


This paper describes an experimental study on manufacturing a Shape Memory Alloy (SMA) based functional 3-D structure with Shape Memory Effect (SME) properties. The structure will have the shape of an accordion spring and will work as a heat driven actuator. A novel laser based manufacturing technique - Direct Metal Deposition (DMD) - was used to process the SMA (NiTi) powder. Electrical Discharge Machining (EDM) was used to post-process the DMD built SMA structure into its final shape - the accordion spring. The spring was heat treated to achieve the SME. The quality of the manufactured accordion spring material was identified by measuring its porosity and cracks after all the manufacturing steps. The spring can be subdivided into two zones: non-porous non-cracked and highly porous (up to 6%) cracked zones. The imposed SME recovered up to 4 mm of the linear displacement of the actuator.

Original languageEnglish (US)
Title of host publicationTransactions of the North American Manufacturing Research Institute of SME 2006 - Papers Presented at NAMRC 34
Number of pages8
StatePublished - Sep 21 2006
Event34th North American Manufacturing Research Conference - Milwaukee, WI, United States
Duration: May 23 2006May 26 2006


Other34th North American Manufacturing Research Conference
CountryUnited States
CityMilwaukee, WI


  • Monolithic actuator
  • Shape memory alloys (SMA)
  • Shape memory effect (SME)

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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