Artificial biometric finger driven by shape-memory alloy wires.
This paper presents the design and testing of an artificial finger based partly on biomechanics. The prototype was manufactured in acrylonitrile butadiene styrene plastic using a rapid prototyping three-dimensional printer. The flexing of the finger was realized by Ni-Ti shape-memory alloy (SMA) wires with diameters of 0.3 mm, activated by resistive heating. The results obtained show the new prototype to be superior in performance, mainly in terms of angles of rotation of the phalanges, compared with some SMA fingers discussed in the literature.
Department of Mechanical Engineering, Federal University of Paraiba, Joao Pessoa, Paraiba, Brazil.
André Fellipe Cavalcante
AF
Silva
Alexsandro José Virgínio
AJ
dos Santos
Cícero da Rocha
Cda R
Souto
Carlos José
CJ
de Araújo
Simplício Arnaud
SA
da Silva
D001696:Biomechanical Phenomena; D005385:Fingers / Q000033:anatomy & histology* / Q000502:physiology*; D006801:Humans; D008422:Materials Testing; D009532:Nickel / Q000737:chemistry*; D019736:Prostheses and Implants; D014025:Titanium / Q000737:chemistry*
C040654:titanium nickelide; D009532:Nickel; D014025:Titanium
Artificial finger; Biomechanics; Robotic rehabilitation; Shape-memory alloys