SU1647344A1 - Method of testing material specimens for plasticity - Google Patents
Method of testing material specimens for plasticity Download PDFInfo
- Publication number
- SU1647344A1 SU1647344A1 SU894650400A SU4650400A SU1647344A1 SU 1647344 A1 SU1647344 A1 SU 1647344A1 SU 894650400 A SU894650400 A SU 894650400A SU 4650400 A SU4650400 A SU 4650400A SU 1647344 A1 SU1647344 A1 SU 1647344A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- sample
- gasket
- matrix
- specimen
- folding
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims abstract description 7
- 238000010998 test method Methods 0.000 title 1
- 239000011159 matrix material Substances 0.000 claims abstract description 9
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 6
- 125000006850 spacer group Chemical group 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000000523 sample Substances 0.000 abstract 7
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Изобретение относитс к испытательной технике, а именно к способам испытани образцов материалов на пластичность . Целью изобретени вл етс повышение точности. Образец 1 и прокладку 2 с толщиной Ј (1,2... ...2,0)$, где Q - толщина образца, помещают на вогнутую внутреннюю поверхность 3 цилиндрической матрицы 4. При этом прокладка 2 размещена между образцом 1 и поверхностью 3, а их торцы лежат в соответствующих радиальных плоскост х 5 и 6 матрицы 4. Воздействуют сжимающими тангенциальными усили ми Р от сегментов 7 и 8 на торцы образца 1 и прокладки 2 до по влени разр да между образцом 1 и прокладкой 2. По размеру зазора суд т о складкообразовании, а по длинам образца L и 1 до и после складкообразовани суд т о пластичности материала образца 1. 1 ил. с « (ЛThe invention relates to a testing technique, and specifically to methods for testing samples of materials for ductility. The aim of the invention is to improve the accuracy. Sample 1 and gasket 2 with a thickness of Ј (1.2 ... ... 2.0) $, where Q is the sample thickness, is placed on the concave inner surface 3 of the cylindrical matrix 4. The gasket 2 is placed between sample 1 and the surface 3, and their ends lie in the corresponding radial planes 5 and 6 of the matrix 4. Impact compressive tangential forces P from segments 7 and 8 on the ends of sample 1 and gasket 2 until a discharge occurs between sample 1 and gasket 2. By the size of the gap about folding, and according to sample lengths L and 1, before and after folding, judging about folding plasticity of the sample material 1. 1 Il. with "(L
Description
Изобретение относится к испытательной технике, а именно к способам испытания образцов материалов на пластичность.The invention relates to testing equipment, and in particular to methods for testing plastic samples of materials.
Целью изобретения является повышение точности.The aim of the invention is to increase accuracy.
На чертеже приведена схема устройства для осуществления способа.The drawing shows a diagram of a device for implementing the method.
Способ осуществляют следующим образом.The method is as follows.
Изготавливают листовой образец 1 и прокладку 2 из одного и того же материала. При этом толщина прокладки 2 равна 1,2...2 - толщины $ образ~(5 ца 1. Прокладку 2 и образец 1 изгибают и располагают их на внутреннюю вогнутую поверхность 3 цилиндрической матрицы 4 так, что прокладки 2 расположены между образцом 1 и поверхностью^ 3, а торцы образца 1 и прокладки 2 лежат в соответствующих радиальных плоскостях 5 и 6-матрицы 4. Затем воздействуют на торцы образца 1 и прокладки 2 сжимающими тангенциальными 25 усилиями Р с помощью сегментов 7. и 8, перемещающих по поверхности 3 матрицы 4 от клина.9, на который воздействуют силой Р^. Фиксируют размер К зазора между образцом 1 и прокладкой 2, по зо которому судят о складкообразовании образца 1. При испытании измеряют длину образца до L и после 1 складкообразования. По соотношению указанных длин L и 1 из соотношения 35A sheet sample 1 and a gasket 2 are made of the same material. The thickness of the gasket 2 is 1.2 ... 2 - the thickness is $ image ~ (5 centigrade 1. The gasket 2 and sample 1 are bent and placed on the inner concave surface 3 of the cylindrical matrix 4 so that the gaskets 2 are located between sample 1 and surface ^ 3, and the ends of the sample 1 and gaskets 2 lie in the corresponding radial planes of the 5 and 6-matrix 4. Then they act on the ends of the sample 1 and gaskets 2 with compressive tangential 25 forces P using segments 7. and 8 moving the matrices on the surface 3 4 from the wedge. 9, which is affected by the force P ^. Fix the size To the gap between the sample 1 and the gasket 2, according to which the folding of sample 1 is judged. During the test, measure the length of the sample before L and after folding 1. By the ratio of the indicated lengths L and 1 from a ratio of 35
ОС = —----100% судят о пластичности ¢/,. Точность повышается за счет обеспечения чистого сжатия при исключении сил трения между образцом 1 и до поверхностью 3.OS = —---- 100% judge the ductility ¢ / ,. Accuracy is improved by providing clean compression while eliminating friction between specimen 1 and to surface 3.
Пр и м е р. Для испытания взят листовой образец 1. и прокладка 2 квадратной формы из стали марки 08КП. Длина 4 сторон равна 30 мм. Тол-45 щина образца = 2 мм, толщина прокладки равна 1,2$е.PRI me R. For testing, we took sheet sample 1. and gasket 2 of a square shape made of steel grade 08KP. The length of 4 sides is 30 mm. Tol-45 thickness of the sample = 2 mm, the thickness of the gasket is 1.2 $ e .
Перед испытанием образец 1 и прокладку 2 искривили по радиусу, .соот ветствующему радиусу цилиндрической поверхности 3 матрицы 4. Затем нагружаемые торцы образца 1 и прокладки 2 фрезеруют до их полного прилегания сегментами 7 и 8. После чего образец 1 и прокладку 2 нагрузили сжимающим усилием на вогнутой цилиндрической поверхности 3. Скорость деформирования образца 1 и прокладки 2 при нагружении равны. Деформирование провели до появления зазора К между образцом 1 и прокладкой 2. Затем измеряли длину 1 образца 1 и определили численное значение предельной 8 пластичности материала образца 1 (его истинный ресурс пластичности)- и в условиях сжимающих напряжений при 1 = 18,9 мм.Before testing, sample 1 and gasket 2 were curved along the radius corresponding to the radius of the cylindrical surface 3 of matrix 4. Then, the loaded ends of sample 1 and gaskets 2 are milled until they fit completely with segments 7 and 8. After that, sample 1 and gasket 2 were loaded with compressive force concave cylindrical surface 3. The rate of deformation of the sample 1 and the gasket 2 during loading are equal. The deformation was carried out until a gap K appeared between the sample 1 and the gasket 2. Then, the length 1 of the sample 1 was measured and the numerical value of the ultimate plasticity limit of the material of sample 1 (its true plasticity resource) was determined - and under compressive stress at 1 = 18.9 mm.
00= Н00% = 37,1%.00 = H00% = 37.1%.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894650400A SU1647344A1 (en) | 1989-02-14 | 1989-02-14 | Method of testing material specimens for plasticity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894650400A SU1647344A1 (en) | 1989-02-14 | 1989-02-14 | Method of testing material specimens for plasticity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1647344A1 true SU1647344A1 (en) | 1991-05-07 |
Family
ID=21428704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU894650400A SU1647344A1 (en) | 1989-02-14 | 1989-02-14 | Method of testing material specimens for plasticity |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1647344A1 (en) |
-
1989
- 1989-02-14 SU SU894650400A patent/SU1647344A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Авторское свидетельство СССР № 634166, кл. G 01 N 3/08, 1978. * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SU1647344A1 (en) | Method of testing material specimens for plasticity | |
| Pour-Ghaz et al. | Can acoustic emission be used to detect alkali silica reaction earlier than length change tests | |
| SU1545142A1 (en) | Apparatus for determining stressed-strained state of specimen in eccentric compression | |
| RU2226682C2 (en) | Process testing sheet materials for tension | |
| SU1357765A1 (en) | Method of testing material specimens for tension | |
| SU1262332A1 (en) | Device for testing specimens of rock with triaxial compression | |
| SU1719965A1 (en) | Method of testing of materials for plasticity | |
| SU1612243A1 (en) | Method of determining rheologic characteristics f substances | |
| SU864117A1 (en) | Ultrasonic method of flaw detection in polycrystalline materials | |
| SU1278666A1 (en) | Device for tensile tests of rock | |
| SU1188568A1 (en) | Method of testing mechanical properties of construction materials | |
| SU1569659A1 (en) | Method of determining characteristics of mechanical properties of material of merchant shapes specimens | |
| SU1668905A1 (en) | Process of loading tubular test piece with thickened walls at the ends | |
| RU1820282C (en) | Tensile test process for sheet material specimens | |
| SU905750A1 (en) | Method and device for determination of material friction coefficient | |
| SU1244545A1 (en) | Method of testing specimens in compression | |
| SU1559266A1 (en) | Method of determining crack development | |
| SU467185A1 (en) | Device for securing rock specimens during tensile tests | |
| SU1756801A1 (en) | Method of studying mechanical properties of constructional materials with consideration of loading history | |
| SU1693550A1 (en) | Method of determining shear stability of asphalt-concrete | |
| SU911202A1 (en) | Device for press for compression testing | |
| SU1640590A1 (en) | Method of plasticity testing of material specimens | |
| Clayton | The cylinder splitting test as a method for determining the compressive strength of concrete | |
| SU1694895A1 (en) | Method for testing rock samples by compression | |
| SU587362A1 (en) | Method of determining fracture toughness of construction materials |