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Subject = superalloys;
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Analysis and Evaluation of the Dynamic Performance of SMA Actuators for Prosthetic Hand Design
(2009)
O'Toole, Kevin; McGrath, Mark; Coyle, Eugene
Analysis and Evaluation of the Dynamic Performance of SMA Actuators for Prosthetic Hand Design
(2009)
O'Toole, Kevin; McGrath, Mark; Coyle, Eugene
Abstract:
It is widely acknowledged within the biomedical engineering community that shape memory alloys (SMAs) exhibit great potential for application in the actuation of upper limb prosthesis designs. These lightweight actuators are particularly suitable for prosthetic hand solutions. A four-fingered, 12 degree-of-freedom prosthetic hand has been developed featuring SMA bundle actuators embedded within the palmar structure. Joule heating of the SMA bundle actuators generates sufficient torque at the fingers to allow a wide range of everyday tasks to be carried out. Transient characterization of SMA bundles has shown that performance/response during heating and cooling differs substantially. Natural convection is insufficient to provide for adequate cooling during elongation of the actuators. An experimental test-bed has been developed to facilitate analysis of the heat transfer characteristics of the appropriately sized SMA bundle actuators for use within the prosthetic hand design. Various...
https://arrow.dit.ie/engschmanart/1
Displaying Results 1 - 1 of 1 on page 1 of 1
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