Search

The instrument uses two synchronized fixtures that rotate in equal and opposite directions, imparting fully reversible bending so the same surface experiences alternating tension and compression, mitigating buckling and alignment sensitivities common in uniaxial fatigue setups. A single motor, reduction gearbox, and shaft translate drive motion into counter rotation at both ends, while round tip, width spanning clamps distribute pressure to minimize corner stress concentrations and protect delicate specimens. Users can select pure bending or four point bending modes and adjust rotation amplitude and torque through an integrated controller, delivering repeatable cyclic loading in a compact, standalone system. Distinctive advantages include reliable testing of asymmetric geometries (laps, fillets), thin sheets, additively manufactured parts, and brittle ceramics without large dual actuator frames. This can consolidate multiple flexure methods into one benchtop mechanism. Its modular layout and adjustable fixtures integrate smoothly with common lab workflows and OEM platforms, helping teams accelerate evaluations without major reconfiguration of existing equipment. Potential commercial markets include instrument OEMs and suppliers of materials testing systems and accessories serving aerospace, automotive, academic, and contract laboratories. This technology is assessed at a TRL 6 and is ready for patent licensing.