Torsion test machine UTDST-5Y

multiaxial fatigueautomatic

Fatigue in intramedullary implants causes severe complications due to the failure of implants and related operation during the consolidation phase. This work succeeds in developing a test fixture and procedure for inducing three‐dimensional loading in order to define the fatigue life of an implant. The fatigue can be analyzed for various osteotomy locations and for various load spectra based on the estimates made for a patient or patient group. The fixture induces reliable loadings at cycle rates up to 2 Hz. Currently, the ASTM F1264 standard provides the test methods for studying the mechanical performance of intramedullary fixation devices and defines the test procedure for four‐point bending tests. The existing test methods are suited for studying torsional and relative bending performance separately in a single load mode at a time. The four‐point bending test fixture induces localized surface loads and results in an unrepresentative loading‐deformation especially in an implant that is hollow. Main Specification: Maximum peak load: 4400N Peak value of dynamic load:3000N Peak value of static load: 2100N Testing machine level: Level 0.5 Load measurement range: 0.4%-100%F.S. Load measurement accuracy: Better than ± 0.2% of the indicated value (within the load measurement range) Maximum fatigue loading frequency: 100Hz Axial travel: 30mm