APPARATUS FOR MATERIALS SAMPLES TEST BY FATIGUE IN BENDING Russian patent published in 1994 - IPC

FIELD: measurement technology. SUBSTANCE: apparatus has a body, a mounted on it drive of a crank-slide gear, connected with a platform, on which a rotor with its drive are fixed. Springs and pushers are placed in rotor's holes, that are periodically engaged with a lever. A passive catch of a sample is fixed to the body. The end of the sample is fixed in an active catch of the lever. After the drive, rotating the rotor, pushers of which are periodically engaged with the lever, is switched on, the springs contract periodically and their forces form the bend of the sample. Simultaneously with the drive, a drive, that moves the platform together with its rotor and drive across the crank-slide gear, is switched on. As a result of it, the sample is being loaded under terms of zero cycle of tension with different maximum tension in cycle from cycle to cycle. EFFECT: apparatus is effective in materials samples test by fatigue in bending. 2 cl, 2 dwg