MACHINE FOR FATIGUE TESTING OF SPECIMENS Russian patent published in 2003 - IPC

FIELD: testing equipment. SUBSTANCE: machine for fatigue testing of specimens has foundation, lever, rotation drive, loading mechanism, specimen grippers, counterweight and weight. Harmonic ( sinusoidal ) component of cyclic load given to specimen is formed by means of weight mounted for rotation with constant angular velocity around axle made fast to lever and static component of cyclic load transmitted to specimen is formed with the aid of counterweight made fast to lever. Lever is linked to foundation with the help of joint and has one degree of rotation freedom in vertical plane. One specimen gripper is tied up with foundation and the other specimen gripper is kinematically coupled to lever through device transmitting effort on specimen grippers. EFFECT: improved functional reliability and accuracy of machine. 3 cl, 6 dwg