DEVICE FOR TESTING THE SPECIMENS OF MATERIALS BY UNIAXIAL LOAD AT NOT EASILY ACCESSIBLE PLACES Russian patent published in 1997 - IPC

FIELD: testing of constructions and materials. SUBSTANCE: device has body 2 accommodating active tie-rod 4, cassette 5 with supports for specimen 19 made with stepped heads 20 and 21 at the ends, and supporting guide tube 3. Casette 5 is made as cup with axial through bottom hole 10, two L- shaped through holes 7 in wall positioned antipodally tho each other and two rods 8 on its external surface. Wall of supporting guide tube 3 has pair of J-shaped slots 13 with ends of different length arranged along wall generatrix on the level of support of specimen 19, of the side of active tie-rod 4 and positioned antipodally to each other, pair of rectangular slots 17 arranged on the side on the other support of specimen 19, and pair of slots the length of which is not less than full travel of casette 5, and which are positioned along wall generatrix opposite to rods 8. Device is provided with pins 11. Each of the pins is intended for installation in respective head 20 or 21 of specimen 19 and for movement in corresponding slots and holes. In addition, device has force exciter 1 coupled to active tie-rod 4. Internal surface of cup bottom is designed for periodic interaction with step of respective head of specimen 19, and every J-shaped slot is provided with deflecting plate. EFFECT: higher test results. 5 dwg