SU864050A1 - Method and device for testing materials for break - Google Patents
Method and device for testing materials for break Download PDFInfo
- Publication number
- SU864050A1 SU864050A1 SU792834937A SU2834937A SU864050A1 SU 864050 A1 SU864050 A1 SU 864050A1 SU 792834937 A SU792834937 A SU 792834937A SU 2834937 A SU2834937 A SU 2834937A SU 864050 A1 SU864050 A1 SU 864050A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- wedge
- sample
- shock wave
- spall
- crack
- Prior art date
Links
- 238000012360 testing method Methods 0.000 title claims description 8
- 239000000463 material Substances 0.000 title claims description 7
- 238000000034 method Methods 0.000 title description 7
- 230000035939 shock Effects 0.000 claims description 10
- 239000002360 explosive Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000004880 explosion Methods 0.000 claims 1
- 238000010998 test method Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
1one
Изобретение относитс к испытательной технике, в частности к способам испытани материалов на разрыв при динамическом нагружении.The invention relates to a testing technique, in particular to methods for testing tensile materials under dynamic loading.
Известен способ определени прочности материалов, в том числе и жидкостей , на разрыв при импульсном механическом нагружении, заключающийс в том, что на испытуемые образцы воздействуют косой ударной волной с последовательно измен ющейс от опыта к опыту амплитудой, регистрируют с помощью импульсного проникающего излучени профиль передней группы откола и профиль фронта ударной волны, определ ют волновую и массовую скорости, по которой рассчитывают давление ударной волны при выходе на свободную поверхность образца, и по величине давлени , при котором возникает или исчезает откол, суд т о прочности образца на разрыв.1.A known method for determining the strength of materials, including liquids, for breaking under pulsed mechanical loading, which means that test specimens are affected by an oblique shock wave with a successive amplitude varying from an experience to an experience amplitude of the front group spallation and shock front profile, determine the wave and mass velocity, which is used to calculate the pressure of the shock wave when it reaches the free surface of the sample, and the value of yes Effects in which splitting occurs or disappears are judged on the tensile strength of the specimen.
Однако при использовании способа дл испытани твердых тел необходимо проводить большое количество опытов с использованием источника проникающего излучени .However, when using the method for testing solids, it is necessary to conduct a large number of experiments using a source of penetrating radiation.
Наиболее близким техническим решением к изобретению вл етс способ испытани материалов на разрыв, эаключающийс в том, что на образец в виде плиты воздействуют ударной волной, которую создают контактным взрьшом зар да взрывчатого вещества, регистрируют факт образовани откольной трещины и определ ют давление в ударной волне, выход щей на свободную поверхность образца, по которому суд т о прочности материала на The closest technical solution to the invention is a method of tensile testing, in that the sample in the form of a plate is impacted by a shock wave, which is created by the contact explosive charge of an explosive, the fact of spall cracking is detected and the pressure in the shock wave is determined a sample that is exposed to the free surface by which the strength of a material is judged on
10 разрыв 2.10 gap 2.
Недостаток способа - больша трудоемкость, так как сначала на массивной плите размещают пакет пластин и измер ют скорость каждой пластины после выхода ударной волны на The disadvantage of the method is a large labor intensity, since at first a plate pack is placed on a massive plate and the speed of each plate is measured after the shock wave is released on
15 свободную поверхность, затем стро т распределение массовой скорости и давлени за фронтом ударной волны в зависимости от рассто ни , измер ют 15, the free surface, then the distribution of the mass velocity and the pressure behind the shock front are plotted, depending on the distance,
20 толщину естественного откола в сплошном твердом образце, а потом расчетно-графическим путем по известным толщине откола и распределению давлени определ ют прочность ма25 териала на разрыв.20, the thickness of the natural spall in a solid solid sample, and then by calculation and graphical means, the tensile strength of the material is determined by the known spall thickness and pressure distribution.
Цель изобретени - уменьшение . трудоемк ос т и ис пыт а н и и.The purpose of the invention is to reduce. laboriously and ist.
Поставленна цель достигаетс тем, что испытанию подвергают образец в форме клина, зар д взрывчатогоThe goal is achieved by testing a wedge-shaped sample, the charge of an explosive
30thirty
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792834937A SU864050A1 (en) | 1979-10-30 | 1979-10-30 | Method and device for testing materials for break |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792834937A SU864050A1 (en) | 1979-10-30 | 1979-10-30 | Method and device for testing materials for break |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU864050A1 true SU864050A1 (en) | 1981-09-15 |
Family
ID=20857181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU792834937A SU864050A1 (en) | 1979-10-30 | 1979-10-30 | Method and device for testing materials for break |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU864050A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2491530C2 (en) * | 2011-05-20 | 2013-08-27 | ФГВОУВПО "Пермский военный институт внутренних войск МВД РФ" | Method of determining spallation strength of materials to tearing under impact conditions |
-
1979
- 1979-10-30 SU SU792834937A patent/SU864050A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2491530C2 (en) * | 2011-05-20 | 2013-08-27 | ФГВОУВПО "Пермский военный институт внутренних войск МВД РФ" | Method of determining spallation strength of materials to tearing under impact conditions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Chi et al. | Fracture processes in granite blocks under blast loading | |
| CN111006957B (en) | An experimental method to study the buckling failure of rock wedges under high stress | |
| Lokajíček et al. | Acoustic emission monitoring of crack formation during alkali silica reactivity accelerated mortar bar test | |
| SU864050A1 (en) | Method and device for testing materials for break | |
| Li et al. | Investigation on the dynamic response of steel plates with a pre-formed hole loaded by underwater shock wave | |
| Sokovikov et al. | The study of mechanical and microstructural aspects of localized shear fracture in metals under dynamic loading | |
| Forquin | Dynamic behavior of ceramic materials | |
| RU2221233C2 (en) | Method testing materials for breaking under conditions of compound-stress dynamic loading | |
| SU1714357A1 (en) | Method of determining deformation of article | |
| Kozák et al. | Laboratory investigations on fault plane induced tensile cracks | |
| Modiriasari et al. | Monitoring of mechanically-induced damage in rock using transmission and reflection elastic waves | |
| Chen et al. | Measurement of the dynamic fracture toughness of alumina ceramic | |
| Nishimura et al. | Ultrasonic detection of spall damage induced by low-velocity repeated impact | |
| Erzar et al. | Influence of aggregate size and free water on the dynamic behaviour of concrete subjected to impact loading | |
| Geetha | Thickness estimation and crack detection in concrete using impact-echo technique | |
| Proust et al. | Long distance propagation of shock waves in the open atmosphere | |
| Shen et al. | An experimental investigation on the failure of rectangular plate under wedge impact | |
| SU689409A1 (en) | Method for dynamic testing of materials | |
| Forquin et al. | A rocking spalling test to characterize the crack velocity in concrete | |
| Chen et al. | Full-field 3D deformation measurement of thin metal plates subjected to underwater shock loading | |
| SU586360A1 (en) | Equipment for investigating plane shock wave parameters in a porous material | |
| SU894448A1 (en) | Method of determination of destructive load value in splitting off destruction | |
| SU437949A1 (en) | Method of researching the strength properties of materials | |
| SU575537A1 (en) | Method of determining tensile strength of materials by applying dynamic loads | |
| SU938083A1 (en) | Method of determination of length and shape of a crack under flat deformation conditions |