SU1620897A1

SU1620897A1 - Device for testing specimen of material for compression

Info

Publication number: SU1620897A1
Application number: SU894669983A
Authority: SU
Inventors: Николай Николаевич Цвилынюк
Original assignee: Н.Н.Цвилынюк
Priority date: 1989-02-10
Filing date: 1989-02-10
Publication date: 1991-01-15

Abstract

Изобретение относитс к технике испытаний материалов, в частности к устройствам дл испытаний на сжатие образцов хрупких материалов неправильной формы. Цель изобретени - уменьшение габаритов устройства. На направл ющих 3 установлены с возможностью перемещени заполненные жидкостью нагрузочные корпуса 1 и 2 с плунжерами 4 и 5. Между плунжерами 4 и 5 установлены соосно стаканы 7 и 8, обращенные друг к другу открытыми торцами. На дне каждого из стаканов 7 и 8 размещены наборы шариков, предназначенных дл передачи сжимающих усилий на образец 11. Бокова поверхность стакана 8 выполнена в виде шипов, рассто ние между которыми меньше диаметра шариков, а бокова поверхность стакана 7 имеет ответные пазы. Между наборами шариков и поверхностью образца 11 установлены днища, выполненные из отдельных сегментов, св занных посредством гибких св зей между собой и с упругими элементами, размещенными в стаканах 7, 8. Полость корпуса 1 сообщена с манометром 6. При приложении сжимающей нагрузки к корпусам 1, 2 стаканы 7, 8 под действием плунжеров 4, 5 перемещаютс один к другому. Р арики и сегменты днищ самоустанавливаютс по площадке контакта с образцом 11. При разрушении образца 11 фиксируют его предел прочности на сжатие по манометру 6. 1 з.п. ф-лы, 5 ил. (ЛThe invention relates to a technique for testing materials, in particular, devices for testing the compression of samples of fragile materials of irregular shape. The purpose of the invention is to reduce the size of the device. On the guides 3, the load bodies 1 and 2 filled with fluid are mounted for movement with the plungers 4 and 5. Between the plungers 4 and 5, coaxially sleeves 7 and 8 are installed, facing each other with open ends. At the bottom of each of the cups 7 and 8, there are sets of balls designed to transfer compressive forces to the sample 11. The side surface of the glass 8 is made in the form of spikes, the distance between which is smaller than the diameter of the balls, and the side surface of the glass 7 has matching slots. Bottoms are installed between the sets of balls and the surface of sample 11, made of separate segments connected by flexible connections between themselves and with elastic elements placed in cups 7, 8. The cavity of body 1 communicates with pressure gauge 6. When a compressive load is applied to bodies 1 , 2 cups 7, 8 under the action of the plungers 4, 5 move one to the other. The grids and bottom segments self-align along the contact area with sample 11. When sample 11 fails, its compressive strength is fixed by gauge 6. 1 Cp f-ly, 5 ill. (L

Description

1515

Фм.1Fm.1

Фм.ЗFm.z

1515

13 19 W13 19 W

1818

Фив. 4Thebes. four

Фиг. 5FIG. five

Claims

SUMMARY OF THE INVENTION 1. A device for testing a material sample for compression, comprising upper and lower ³ load cases filled with liquid, with plungers mounted for movement on rails, a manometer communicated with the cavity of one of the cases, and sets of balls, characterized in that , in order to reduce the dimensions of the device, the diameter of each plunger is equal to the diameter of the corresponding housing, and the device is equipped with two cups located coaxially between the plungers and facing each other with open ends s, for one ns of which the side surface is made in the form of spikes, 20 the distance between which is smaller than the diameter of the balls, and the side surface of the second glass is in the form of reciprocal grooves, with sets of balls placed at the bottom of each of the glasses. 25 2. The device to claim 1, characterized in that it is equipped with bottoms located on sets of balls and made of separate segments connected by flexible connections between themselves and with elastic elements placed in glasses.