DEVICE FOR FRICTION TESTING OF MATERIALS Russian patent published in 1994 - IPC

FIELD: test technology. SUBSTANCE: device has grippers 2, 3 with draw rods 8, 9 for check specimens 4, grip 5 with draw rod 10 for specimen 6, retainers 11, 12, 13, clutch 13, fingers 21, 22, 23, shaft 15, lever 16 with weight 17. The device is characterized in that relative displacement of specimens occurs at oscillations of lever 16 which are transformed into relative displacements by shaft 15 and different combinations of activation of the clutch, retainers and fingers. EFFECT: widened operating capabilities due to providing tests not only at relative axial movement of specimens and check specimens but at swinging and simultaneous swinging and reciprocal movement as well. 1 dwg