publication . Article . 2010

Nitinol one-way shape memory springs: Thermomechanical characterization and actuator design

Costanza, G; Tata, Me; Calisti, C;
Open Access
  • Published: 01 Jan 2010 Journal: Sensors and Actuators A: Physical, volume 157, pages 113-117 (issn: 0924-4247, Copyright policy)
  • Publisher: Elsevier BV
  • Country: Italy
Abstract
Abstract One-way shape memory effect (OWSME) in NiTi springs has been investigated in this work. The main goal is the definition of a guide-line for the design of a linear actuator for high cycles duty. Some SMA and steel springs with various geometrical features have been produced from wires with different diameters. SMA spring's behavior has been analyzed measuring the maximum length (austenitic condition, T  >  A F – austenite finish) under different applied loads. The measurement of this length has been performed at successive thermomechanical complete working cycles (150, 5350, 43,000 and 600,000) under a constant applied load necessary to full recovery in ...
Subjects
free text keywords: Instrumentation, Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Surfaces, Coatings and Films, Condensed Matter Physics, Metals and Alloys, Austenite, Nickel titanium, Linear actuator, Actuator, Structural engineering, business.industry, business, Engineering, SMA*, Martensite, Shape-memory alloy, Settore ING-IND/21 - Metallurgia
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