SU1483323A1 - Apparatus for dynamic tests of materials - Google Patents

Abstract

This invention relates to a testing technique. The purpose of the invention is to enhance the operational capabilities by providing bending tensile tests. The active grip 2 of the sample 3 and the tg 8 are rigidly connected and installed in the hub 12. An anvil 7 is mounted on the grip, with which the head cooperates after accelerating the rotor 15 to a predetermined angular velocity, as a result of which the grip 8 is moved in the axial direction. The sleeve 12, when the roller 9 interacts with the wedge-shaped cam 10, rotates on a hinge. By installing rigidly connected rods 8 and an active grip 2 in the sleeve 12 pivotally connected to the base 6 to ensure its rotation, it is possible to load the rigidly fixed specimen 3 with tensile and bending loads, which expands the functionality of the device. 2 Il.

Description

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The invention relates to a testing technique, namely, devices for dynamic testing of samples for tensile bending.

The purpose of the invention is to expand the operational capabilities by providing tensile tests with bending.

FIG. 1 shows a structural diagram of the device in FIG. 2 - the same, top view.

The device contains passive and active grippers 1 and 2 for sample 3, the first of which is connected by means of a wedge 4, pressed against the gripper 1 by a spring 5, with the base 6, and the second is connected with the anvil 7. With the gripper 2 is rigidly connected a ha 8, at the end of which is placed a roller 9 interacting with a wedge-shaped cam 10 located on the base 6 in the direction of movement of the thrust 8, the grip 2 with the thrust 8 is placed in the sleeve

11 and spring loaded in the axial direction 25 by a spring 12 pivotally connected to the base 6, and in a direction perpendicular to the axis — by a spring 13 cooperating with the sleeve 11. The sleeve 11 is connected by a hinge 14 to the base 6 in the bend 30 of the sample 3.

The actuator of the device includes a rotor 15 with a brisk 16 installed on it and a rotor drive 15 (not shown), 35

The device works as follows.

Sample 3 is rigidly mounted in grips 1 and 2 and the drive is turned on, which rotates the rotor 15. 45 compressing the spring 12, moves in the axial direction, and the roller 9 moves along the inclined surface of the cam 10. At the same time, the sleeve 11, overcoming the resistance of the spring 13, pivots on the hinge 14 relative to the base. Vani 6, as a result of which the rigidly fixed specimen 3 is subjected to a dynamic load of stretching and bending. After stopping contact 55 of the striker 16 with the anvil 7 capture 2

to ensure its rotation, it is possible to load the rigidly fixed image 3 also with a bending load, which expands the operational capabilities of the device.

Claims (1)

Invention Formula A device for dynamic testing of materials, containing a base, anvil, passive and active grippers for a sample, connected to an active gripper, spring-loaded in axial and perpendicular directions axis, located at the free end of the roller, wedge-shaped cam located on the basis in the direction of movement of the rod with the possibility of interacting with the roller, the exciter in the form of a rotor with a striker mounted on it, interacting with the anvil, and the rotor drive, characterized in that tim operational capability by providing a tensile test with a bend, it is provided with a sleeve in which the rod set and the active grip sleeve is pivotally connected to the base rotatably in the bending plane of the sample and the rod and the asset ny grip rigidly connected. with a tight 8, under the action of the spring 12, and the sleeve 1 1 under the action of the spring 1 3 returns to the initial positions. Wherein Under the action of the spring 5, the wedge 4 lowers and selects the resulting gap. After a complete rotation of the rotor 15 will re-load the sample 13. The device allows testing in a wide ratio between the tensile and flexural deformations, which is determined by the elevation angle of the inclined surface of the cam 10 and the fastening of the specimen: with rigid fastening and lifting angle equal to zero, the specimen undergoes dynamic stretching. sample with the possibility of free movement 0 in the axial direction relative to the claws and the angle of inclination which is not equal to zero is a bend. Installation of rigidly connected ti 8 and active grip 2 in the sleeve 11, pivotally connected to the base 6 To ensure its rotation, it is possible to load the rigidly fixed sample 3 also with a bending load, which expands the operational capabilities of the device. Invention Formula A device for dynamic testing of materials, containing a base, anvil, passive and active grips for a sample, connected to an active gripper, spring loaded in axial and perpendicular directions, mounted on the free end of the roller, wedge-shaped cam located on the base in the direction of movement of the rod with the ability to interact with the roller, the exciter in the form of a rotor with a striker mounted on it interacting with the anvil, and the rotor drive, characterized in that, in order to expand tim operational capability by providing a tensile test with a bend, it is provided with a sleeve in which the rod set and the active grip sleeve is pivotally connected to the base rotatably in the bending plane of the sample and the rod and the active grip is rigidly connected. 6 FIG. 2