SU106506A1 - Plate Fatigue Testing Machine - Google Patents

Description

The subject of the invention is a transverse-bend fatigue testing machine of two metal plates in one form at a time.

The known mines for testing the fatigue of lamellar specimens subjected to alternating bending by nodes with reference weights have the disadvantage that they do not have the ability to excite resonant oscillations in test specimens under cyclically repeated alternating bending.

This disadvantage is eliminated in the machine described below by the fact that the loading device is made in the form of massive pan-taps in the form of rectangular bars fixed to the opposite ends of horizontally arranged, spring-loaded test specimens and fastened to the IMHI by means of built-in tandem and hinged levers fitted with clamp bolts.

The mortar is equipped with an inertial .1 vibrator to excite)) Eozopanic ko.ibi in v-test images, lh, mounted in

one of the tombs. The vibrator is kinematically connected with the drive motor through a coupling, allowing for relative transverse movement of the shafts of the vibrator and the motor during operation of the machine.

Fi1 1 depicts the overall front view of the car; FIG. 2 shows the machine from the side; FIG. 3 shows the general view of the car from above; in fig. 4-6 are shown in three projections of a coupling coupled to a vibrator with an electric motor.

The test plate samples / - / together with massive masters 2 located at their ends are located on twisted springs 3 to form an oscillating circuit, which allows the system to do a lot of movement of the system in the horizontal direction).

These koby .: sbann excite 15 system with an inertial vibrator 4, driven by an electric motor 5 with an adjustable rotational speed, which makes it possible to adjust the excitation frequency, oscillation vibrator in corresponding P1 with the frequency of its own oscillating system.

Crepe. SI 11C Ispuskimi () b) l.chts1 to matiklm spushestvl sph klnіp ts 6 and lom; p1Ts11mis levers 7, closed spindle.m. The inertial vibrator is mounted into the one of the lethas and consists of 10 masses of mass (dbalance 9), the eccentrico of the hidden vibrator in the vibrator in the liquid trasies.

The shaft of the vibrato is connected with the motor shaft by means of an iodopruzhiyiyiyeyyyazlichchatoy clutch 10 which permits a relative hierarchy in transverse and averaging; one of the vibrator and the electromotor is produced during the operation of the machine. The tensile stress created in the test specimens with alternating bending is determined by the magnitude of the excitation of the vibrator’s mass of the vibrator and its speed of vrage. The magnitude of the index is measured by. wire electrotheses, tsatchikov, fixed by the test specimens.

PRIOR DIRECTORSHIP

Claims (2)

1. Plate fatigue testing machine Exposing {alternating bending iodine loading with reference 1-ruses, hl and hl so that, in order to excite resonant bandages in cyclically repeated patterns in test samples under cyclically repeated conditions, ng1g /ka1osh.ee uetroystvo designed as a pendulum in massnvnyh (11r rorme mou1olnyh bruekov, secured proxy, ua opposite ends gorizoitalio raepolozheppyh iodpruzhiieiiyh test samples and fastening them proxy e ioeredet1yum vmontirovagshyh in ma t in and kliiev and 1iarnnrnyh levers supply item zhny mi bolts. 2. In a machine according to claim 1, the use of an inertial vibrator to excite repaired oscillations in the tested samples, mounted in one of the models and in the cue. during the operation of the machine. No. 106506 FIG. four