TESTING DEVICE FOR CHARACTERIZATION OF THE THERMOMECHANICAL PROPERTIES OF A SHAPE MEMORY ALLOY ACTUATOR
David Domingos Soares da Silva1; Ewerton Freitas de Medeiros1; Lipson Douglas de Oliveira Silva1; Melquisedeque Shaloon Bento da Silva Gomes2; Alysson Domingos Silvestre1; Alberdan Santiago de Aquino2
1 UFPB; 2 IFPB
doi:10.20906/CPS/COB-2015-0229
Resumo
The shape memory alloys (SMA) have the property to get back to its original shape, right after a deformation by an adequate thermal proceeding. Nowadays many applications using components made with this material are applied on determinate areas that come from medicine science to aerospace engineering, allowing the development of devices used as smart actuators. By this reason, the work shows the development of a device, monitoredand controlled by the LabVIEW software, able to perform tests inorder to correlate the applied force by the actuator (SMA) with its temperature. The tests consisted in many compression cycles of a spring that in each cycle the spring was compressed 5mm, using the temperature control. With support of the tools provided by LabVIEW software it was able to determine very quickly, accurately and effectively the thermomechanical properties of the alloys, as well as the temperatures of phase transformation and the relationship between actuator force and temperature.
Palavras-chave: Shape Memory Alloy; LabVIEW; Low Cost