SU1002891A1 - Specimen tension-testing device - Google Patents

Description

(A-) DEVICE FOR THE TEST 1 TIE FOR STRETCHING. SAMPLE

The invention relates to devices for studying the strength properties of solid materials, in particular to devices for testing tensile specimens with solder joints. A device for testing specimens is known, which includes a housing, a support insert with a central hole placed in it, a mounting assembly for a sample. For the expansion of samples with a layer inclined relative to the axis of a material softer than the base material, the rigid parts of the sample are displaced relative to each other along n As a result, additional horizontal forces arise that create a bending moment, which introduces an error in the test results. The closest to the technical essence of the invention is a device for testing the stretching of a concrete sample with a layer of foreign material placed in it a support insert with a central hole, a mount for the sample. The disadvantage of this device is the low accuracy of the test results, due to on the implementation of the assembly without the possibility of its movement sufficient to maintain axial load when a plastic deformation occurs in the sample layer. The aim of the invention is to improve the accuracy of the test results. This is achieved by the fact that ycTpoftvo for tensile testing of a Sample with a layer of foreign material inclined relative to its axis, comprising a body housed therein. the support insert with a central hole, the attachment point for the sample, is equipped with a T-shaped suspension, consisting of a shelf and outlet connected by a hinge to the attachment point, and two sets of rollers with collars placed between the support surface of the shelf and the support liner. . 1 shows the described device, a general view; Fig 2 sketch of the test sample; in fig. 3 diagram of the movements of rigid parts of the sample. A device for testing a sample with a layer of foreign material inclined relative to its axis includes a housing 1, a support insert 2 placed therein, in which a central opening 3 is made, and a T-shaped suspension consisting of a shelf k and a stem 5 , by means of a hinge 6 connected to a fastening unit 7 for sample 8 "Between the supporting surface 9 of noniai A and the supporting liner 2 there are placed D1 for the set of rable-25

kov 10 with clips (not shown

The device works as follows.

The test specimen 8 is placed in the fastening assembly 7, which is connected to the stem 5 by means of the hinge 6 and passes it through the central hole 3 of the bearing pad 2. The sets of rollers 10 are placed between the support surface 9 of the flange k and the support insert 2 The sample 8 is then loaded with a tensile force and, according to the test results, diagrams are formed from a shelf and a rod connected by means of a hinge to the attachment unit, and two sets of rollers with collars placed by the supporting surface of the shelf and the supporting liner.

Sources of information taken into account in the examination

one . US patent number U8082 4, cl. GDI N 3/04, 1978,

2. USSR author's certificate No. 567992, class G01N G / O, 1976 (prototype. 8914 movement of parts of sample 8, where Y is the longitudinal component of the displacements, and the transverse component of the displacements, the angle of inclination of the interlayer relative to the axis of the sample 8 (Fig 3) Thus, the use of this device makes it possible to increase the accuracy of the test results by reducing the measurement error of the acting forces in connection with the transverse displacement of one attachment unit relative to another. a specimen with a layer of foreign material inclined relative to its axis, containing a body, spaced in it in a drop with a central hole, a mounting assembly for the sample, distinguished by the fact that, in order to improve accuracy, it is equipped with a T-shaped suspension, Nedb state

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Claims (1)

Claim A device for tensile testing of a specimen with a layer of foreign material inclined with respect to its axis, comprising a housing, a horn insert with a central hole placed thereon, a specimen attachment unit, which is provided with a view to increasing accuracy -shaped suspension consisting of a shelf and a rod connected by means of a hinge with a mounting unit, and two sets of rollers with clips · placed between the supporting surface of the shelf and the supporting insert.