Zeliha COŞKUN, Talip ÇELİK, Yasin KİŞİOĞLU

Design and manufacture of the Torque test setup for small and shapeless materials

In this study, the design and manufacture of torque test set up has been carried out for small and shapeless speciment. The torque sensor, which has maximum 10 Nm, is used in the test system design. The certain specification of Nema 34 step motor which use to apply torsional force to the specimens is 12 Nm, 24V and 4.2 ampere. The step motor is controlled by the HY- DIV268N-5A Step Motor Driver and the supply voltage of driver is 24 Volts. The information about the degree of the specimen rotation was taken from potantiometer. The information obtained from the sensor and potentiometer was transferred to the LabVIEW software to be representation graphically using the USB 6003 DAQ card. The first metatarsal bone modelled from computerized tomography (CT) images was produced by Ultimaker2 3D printer using polylactic acid (PLA) material. The printed bone model was tested through torsion test set up. At the same time, the 3D bone was prepared for finite element analysis. Boundary conditions were applied in the finite element analysis (FEA) model in accordance with the test setup. The produced bones using 3D printer were subjected to torsion test with the test setup. Also the modelled bone was tested in accordance with the torsion test setup by using finite element analysis. After that, the FEA and experimental test results were compared with each other. As a conclusion, the optimization of the torsional test setup was performed based on the FEA.

Keywords:

Torque Test Setup FEA, First metatarsal, Bone PLA,

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