| 摘要 |
<p>A test bench (100) combining high-frequency tribological stress and oligocyclic fatigue, comprising a first test piece (114) fixed to a frame (108) and defining at least one bearing surface, a second test piece (110) that is linked to traction means for exerting bearing stress on the second test piece on the or each bearing surface of the first test piece, means (126) for heating the test pieces and means (122) for exerting vibrational stress on the test pieces to carry out a fretting fatigue and oligocyclic and polycyclic fatigue test, one of the test pieces comprising a portion (112) having the shape of a blade root of a turbomachine rotor and being engaged in a groove (116) having a shape that is substantially complementary to the other of the test pieces in order to reproduce a turbomachine blade/disc fastener. A test bench (100) combining high-frequency tribological stress and oligocyclic fatigue, comprising a first test piece (114) fixed to a frame (108) and defining at least one bearing surface, a second test piece (110) that is linked to traction means for exerting bearing stress on the second test piece on the or each bearing surface of the first test piece, means (126) for heating the test pieces and means (122) for exerting vibrational stress on the test pieces to carry out a fretting fatigue and oligocyclic and polycyclic fatigue test, one of the test pieces comprising a portion (112) having the shape of a root of a turbomachine rotor blade and being engaged in a groove (116) having a shape that is substantially complementary to the other of the test pieces in order to reproduce a turbomachine blade/disc fastener.</p> |
