иа фиг. 2 - то же, но при выполнении устройства с акселерометром и соединением корпуса с базовой машиной; на фиг. 3 - электрическа схема замера ускорени штампа.FIG. 2 - the same, but when the device is executed with an accelerometer and case connection with the base machine; in fig. 3 is an electrical circuit for measuring acceleration of a stamp.
Устройство включает полый корпус 1 с внутренним выступом 2 и соосно установленный с ним кольцевой штамп 3, центральный штамп 4 с выступом 5 и расположенными между ним и кольцевым штампом 3 упругими элементами 6 и 7, установленный в центральном штампе 4 датчик силы 8, обмотки 9 и 10, датчик перемещени 11. Электрическа схема устройства включает источник питани 12, выключатель 13, дифференциальный трансформатор 14 с обмотками 15 и 16. Полый корпус установлен на раме 17 базовоймашины , например, катка.The device includes a hollow body 1 with an internal protrusion 2 and an annular stamp 3 coaxially mounted with it, a central stamp 4 with a protrusion 5 and elastic elements 6 and 7 located between it and the ring stamp 3, a force sensor 8 installed in the central stamp 4, a winding 9 and 10, displacement sensor 11. The electrical circuit of the device includes a power source 12, a switch 13, a differential transformer 14 with windings 15 and 16. The hollow body is mounted on the frame 17 of the base machine, for example, a roller.
Устройство работает следующим образом .The device works as follows.
Полый корпус устанавливают на уплотненный грунт, и под действием мерной нагрузки Р центральный штамп 4 деформирует грунт на величину /. Упругие элементы 6 и 7 имеют первоначальное сжатие, уравновешивающее массу штампа 4 и заданную жесткость, а площадь опорной поверхности кольцевого штампа 3 значительно превосходит площадь опорной поверхности центрального штампа 4. Поэтому при действни нагрузки Р, многократно превосход щей нагрузку от массы штампа 4, кольцевой штамп 3 практически не деформирует грунт, и шток датчика перемещени (прогибомера) И перемещаетс также на величину /, при этом вырабатываетс пропорциональный перемещению электрический сигнал, который подаетс к регистрирующему прибору (не Показан). Соответственно датчик силы 8 вырабатывает сигнал, пропорциональный действующей силе Р, также «подаваемый к прибору. Зна величину Р и /, а также диаметр щтампа4, по известным зависимост м определ ют модуль деформации грунта, а лри наличии соответствующих тарировочных графиков или номограмм - плотность скелета грунта.The hollow body is mounted on a compacted soil, and under the action of dimensional load P, the central stamp 4 deforms the soil by the value of /. The elastic elements 6 and 7 have an initial compression, balancing the mass of the stamp 4 and a given stiffness, and the area of the bearing surface of the ring stamp 3 significantly exceeds the area of the supporting surface of the central stamp 4. Therefore, when the load P, many times surpassing the load from the mass of the stamp 4, the ring stamp 3 practically does not deform the soil, and the displacement sensor shaft (deflection gauge) also travels by an amount of /, and an electrical signal is produced that is proportional to the displacement and is supplied a recording device (not shown). Accordingly, the force sensor 8 generates a signal proportional to the acting force P, also “supplied to the device. Knowing the magnitude of P and /, as well as the diameter of the cartridge4, the modulus of the soil deformation is determined by known dependencies, and if there are corresponding calibration charts or nomograms, the density of the soil skeleton.
После сн ти нагрузки штамп 4 автоматически возвращаетс в исходное положепие и готов к следующему нагружению. При устаиовке корпуса 1 на базовой машине , например на раме 17 уплотн ющего катка, при воздействии нагрузки Р центральный штамп 4 посредством упругого элемента 6 увлекает кольцевой штамп 3 до соприкосновени с грунтом, и далее процесс происходит аналогично описанному выше. После сн ти нагрузки кольцевой штамп 3 и центральный штамп 4 под воздействием силы сжати упругих элементов 6 и 7 возвращаетс в исходноеAfter removal of the load, the stamp 4 automatically returns to the initial position and is ready for the next loading. When mounting case 1 on the base machine, for example, on frame 17 of the compacting roller, under the influence of load P, the central stamp 4 by means of the elastic element 6 draws the ring stamp 3 before contact with the ground, and then the process proceeds as described above. After removal of the load, the ring stamp 3 and the central stamp 4 under the influence of the compressive force of the elastic elements 6 and 7 return to the original
положение. Усилие предварительного сжати упругого элемента 7 уравновешивает массы штампов 3 и 4. При этом нагрузка к штампу 4 может прикладыватьс статически или динамически.position. The pre-compression force of the elastic element 7 balances the weights of the dies 3 and 4. In this case, the load on the die 4 can be applied statically or dynamically.
При динамическом приложении нагрузки скорость перемещени штампа 4 при деформировании грунта переменна. Поэтому при установке на штамп 4 обмотки 9,With dynamic load application, the speed of movement of the punch 4 when the soil is deformed is variable. Therefore, when installed on the stamp 4 winding 9,
соедин емой иа момент удара с источником питани 12, в обмотке 10 будет индуцироватьс переменна ЭДС, пропорциональна скорости перемещени штампа 4, а во вторичной обмотке 16 днфференциального трансформатора 14 будет возникать ток, пропорциональный ускорению перемещени штампа 4. РГспользу известное из второго закона Ньютона соотношение между ускорением, массой штампа и действующей на него силой, можно протарировать показание прибора, соединенного с обмоткой 16, непосредственно в единицах действующей на центральный штамп 4 датчика силы. Преимущество такого способа замера - больша величина снимаемого с обмотки 16 сигнала, позвол ющего обходитьс без усилител . Замыкание контактов выключател 13 на врем удара может производитьс инерционным устройствомat the moment of impact with the power source 12, in the winding 10 a variable emf will be induced, proportional to the speed of movement of the stamp 4, and in the secondary winding 16 of the differential transformer 14 there will be a current proportional to the acceleration of the movement of the stamp 4. The ratio between the acceleration, the mass of the punch and the force acting on it can be traded over the reading of the device connected to the winding 16 directly in units acting on the central punch 4 of the sensor b s. The advantage of this method of measurement is the large amount of signal taken from the winding 16, allowing it to be bypassed without an amplifier. The closure of the contacts of the switch 13 at the time of impact can be made inertial device
(не показано). Устройство обеспечивает увеличение производительности труда и точности контрол уплотненного грунта и может быть использовапо в транспортном, автодорожном, аэродромном и гидротехническом строительстве при возведении земл ных сооружений.(not shown). The device provides an increase in labor productivity and precision control of compacted soil and can be used in transport, road, airfield and hydraulic engineering during the erection of land structures.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792820700ASU887717A1 (en) | 1979-09-18 | 1979-09-18 | Device for checking soil consolidation quality |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792820700ASU887717A1 (en) | 1979-09-18 | 1979-09-18 | Device for checking soil consolidation quality |
| Publication Number | Publication Date |
|---|---|
| SU887717A1true SU887717A1 (en) | 1981-12-07 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU792820700ASU887717A1 (en) | 1979-09-18 | 1979-09-18 | Device for checking soil consolidation quality |
| Country | Link |
|---|---|
| SU (1) | SU887717A1 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11079725B2 (en) | 2019-04-10 | 2021-08-03 | Deere & Company | Machine control using real-time model |
| US11178818B2 (en) | 2018-10-26 | 2021-11-23 | Deere & Company | Harvesting machine control system with fill level processing based on yield data |
| US11234366B2 (en) | 2019-04-10 | 2022-02-01 | Deere & Company | Image selection for machine control |
| US11240961B2 (en) | 2018-10-26 | 2022-02-08 | Deere & Company | Controlling a harvesting machine based on a geo-spatial representation indicating where the harvesting machine is likely to reach capacity |
| US20220110251A1 (en) | 2020-10-09 | 2022-04-14 | Deere & Company | Crop moisture map generation and control system |
| US11467605B2 (en) | 2019-04-10 | 2022-10-11 | Deere & Company | Zonal machine control |
| US11474523B2 (en) | 2020-10-09 | 2022-10-18 | Deere & Company | Machine control using a predictive speed map |
| US11477940B2 (en) | 2020-03-26 | 2022-10-25 | Deere & Company | Mobile work machine control based on zone parameter modification |
| US11589509B2 (en) | 2018-10-26 | 2023-02-28 | Deere & Company | Predictive machine characteristic map generation and control system |
| US11592822B2 (en) | 2020-10-09 | 2023-02-28 | Deere & Company | Machine control using a predictive map |
| US11635765B2 (en) | 2020-10-09 | 2023-04-25 | Deere & Company | Crop state map generation and control system |
| US11641800B2 (en) | 2020-02-06 | 2023-05-09 | Deere & Company | Agricultural harvesting machine with pre-emergence weed detection and mitigation system |
| US11650587B2 (en) | 2020-10-09 | 2023-05-16 | Deere & Company | Predictive power map generation and control system |
| US11653588B2 (en) | 2018-10-26 | 2023-05-23 | Deere & Company | Yield map generation and control system |
| US11672203B2 (en) | 2018-10-26 | 2023-06-13 | Deere & Company | Predictive map generation and control |
| US11675354B2 (en) | 2020-10-09 | 2023-06-13 | Deere & Company | Machine control using a predictive map |
| US11711995B2 (en) | 2020-10-09 | 2023-08-01 | Deere & Company | Machine control using a predictive map |
| US11727680B2 (en) | 2020-10-09 | 2023-08-15 | Deere & Company | Predictive map generation based on seeding characteristics and control |
| US11778945B2 (en) | 2019-04-10 | 2023-10-10 | Deere & Company | Machine control using real-time model |
| US11825768B2 (en) | 2020-10-09 | 2023-11-28 | Deere & Company | Machine control using a predictive map |
| US11845449B2 (en) | 2020-10-09 | 2023-12-19 | Deere & Company | Map generation and control system |
| US11844311B2 (en) | 2020-10-09 | 2023-12-19 | Deere & Company | Machine control using a predictive map |
| US11849672B2 (en) | 2020-10-09 | 2023-12-26 | Deere & Company | Machine control using a predictive map |
| US11849671B2 (en) | 2020-10-09 | 2023-12-26 | Deere & Company | Crop state map generation and control system |
| US11864483B2 (en) | 2020-10-09 | 2024-01-09 | Deere & Company | Predictive map generation and control system |
| US11874669B2 (en) | 2020-10-09 | 2024-01-16 | Deere & Company | Map generation and control system |
| US11889788B2 (en) | 2020-10-09 | 2024-02-06 | Deere & Company | Predictive biomass map generation and control |
| US11889787B2 (en) | 2020-10-09 | 2024-02-06 | Deere & Company | Predictive speed map generation and control system |
| US11895948B2 (en) | 2020-10-09 | 2024-02-13 | Deere & Company | Predictive map generation and control based on soil properties |
| US11927459B2 (en) | 2020-10-09 | 2024-03-12 | Deere & Company | Machine control using a predictive map |
| US11946747B2 (en) | 2020-10-09 | 2024-04-02 | Deere & Company | Crop constituent map generation and control system |
| US11957072B2 (en) | 2020-02-06 | 2024-04-16 | Deere & Company | Pre-emergence weed detection and mitigation system |
| US11983009B2 (en) | 2020-10-09 | 2024-05-14 | Deere & Company | Map generation and control system |
| US12013245B2 (en) | 2020-10-09 | 2024-06-18 | Deere & Company | Predictive map generation and control system |
| US12035648B2 (en) | 2020-02-06 | 2024-07-16 | Deere & Company | Predictive weed map generation and control system |
| US12058951B2 (en) | 2022-04-08 | 2024-08-13 | Deere & Company | Predictive nutrient map and control |
| US12069978B2 (en) | 2018-10-26 | 2024-08-27 | Deere & Company | Predictive environmental characteristic map generation and control system |
| US12069986B2 (en) | 2020-10-09 | 2024-08-27 | Deere & Company | Map generation and control system |
| US12082531B2 (en) | 2022-01-26 | 2024-09-10 | Deere & Company | Systems and methods for predicting material dynamics |
| US12127500B2 (en) | 2021-01-27 | 2024-10-29 | Deere & Company | Machine control using a map with regime zones |
| US12178158B2 (en) | 2020-10-09 | 2024-12-31 | Deere & Company | Predictive map generation and control system for an agricultural work machine |
| US12229886B2 (en) | 2021-10-01 | 2025-02-18 | Deere & Company | Historical crop state model, predictive crop state map generation and control system |
| US12225846B2 (en) | 2020-02-06 | 2025-02-18 | Deere & Company | Machine control using a predictive map |
| US12245549B2 (en) | 2022-01-11 | 2025-03-11 | Deere & Company | Predictive response map generation and control system |
| US12250905B2 (en) | 2020-10-09 | 2025-03-18 | Deere & Company | Machine control using a predictive map |
| US12284934B2 (en) | 2022-04-08 | 2025-04-29 | Deere & Company | Systems and methods for predictive tractive characteristics and control |
| US12295288B2 (en) | 2022-04-05 | 2025-05-13 | Deere &Company | Predictive machine setting map generation and control system |
| US12298767B2 (en) | 2022-04-08 | 2025-05-13 | Deere & Company | Predictive material consumption map and control |
| US12302791B2 (en) | 2021-12-20 | 2025-05-20 | Deere & Company | Crop constituents, predictive mapping, and agricultural harvester control |
| US12310286B2 (en) | 2021-12-14 | 2025-05-27 | Deere & Company | Crop constituent sensing |
| US12329148B2 (en) | 2020-02-06 | 2025-06-17 | Deere & Company | Predictive weed map and material application machine control |
| US12329050B2 (en) | 2020-10-09 | 2025-06-17 | Deere & Company | Machine control using a predictive map |
| US12358493B2 (en) | 2022-04-08 | 2025-07-15 | Deere & Company | Systems and methods for predictive power requirements and control |
| US12386354B2 (en) | 2020-10-09 | 2025-08-12 | Deere & Company | Predictive power map generation and control system |
| US12419220B2 (en) | 2020-10-09 | 2025-09-23 | Deere & Company | Predictive map generation and control system |
| US12422847B2 (en) | 2020-10-09 | 2025-09-23 | Deere & Company | Predictive agricultural model and map generation |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11672203B2 (en) | 2018-10-26 | 2023-06-13 | Deere & Company | Predictive map generation and control |
| US11178818B2 (en) | 2018-10-26 | 2021-11-23 | Deere & Company | Harvesting machine control system with fill level processing based on yield data |
| US11653588B2 (en) | 2018-10-26 | 2023-05-23 | Deere & Company | Yield map generation and control system |
| US11240961B2 (en) | 2018-10-26 | 2022-02-08 | Deere & Company | Controlling a harvesting machine based on a geo-spatial representation indicating where the harvesting machine is likely to reach capacity |
| US12069978B2 (en) | 2018-10-26 | 2024-08-27 | Deere & Company | Predictive environmental characteristic map generation and control system |
| US12171153B2 (en) | 2018-10-26 | 2024-12-24 | Deere & Company | Yield map generation and control system |
| US12178156B2 (en) | 2018-10-26 | 2024-12-31 | Deere & Company | Predictive map generation and control |
| US12010947B2 (en) | 2018-10-26 | 2024-06-18 | Deere & Company | Predictive machine characteristic map generation and control system |
| US11589509B2 (en) | 2018-10-26 | 2023-02-28 | Deere & Company | Predictive machine characteristic map generation and control system |
| US11778945B2 (en) | 2019-04-10 | 2023-10-10 | Deere & Company | Machine control using real-time model |
| US11829112B2 (en) | 2019-04-10 | 2023-11-28 | Deere & Company | Machine control using real-time model |
| US11650553B2 (en) | 2019-04-10 | 2023-05-16 | Deere & Company | Machine control using real-time model |
| US11467605B2 (en) | 2019-04-10 | 2022-10-11 | Deere & Company | Zonal machine control |
| US11079725B2 (en) | 2019-04-10 | 2021-08-03 | Deere & Company | Machine control using real-time model |
| US11234366B2 (en) | 2019-04-10 | 2022-02-01 | Deere & Company | Image selection for machine control |
| US11641800B2 (en) | 2020-02-06 | 2023-05-09 | Deere & Company | Agricultural harvesting machine with pre-emergence weed detection and mitigation system |
| US12035648B2 (en) | 2020-02-06 | 2024-07-16 | Deere & Company | Predictive weed map generation and control system |
| US11957072B2 (en) | 2020-02-06 | 2024-04-16 | Deere & Company | Pre-emergence weed detection and mitigation system |
| US12225846B2 (en) | 2020-02-06 | 2025-02-18 | Deere & Company | Machine control using a predictive map |
| US12329148B2 (en) | 2020-02-06 | 2025-06-17 | Deere & Company | Predictive weed map and material application machine control |
| US11477940B2 (en) | 2020-03-26 | 2022-10-25 | Deere & Company | Mobile work machine control based on zone parameter modification |
| US11946747B2 (en) | 2020-10-09 | 2024-04-02 | Deere & Company | Crop constituent map generation and control system |
| US12080062B2 (en) | 2020-10-09 | 2024-09-03 | Deere & Company | Predictive map generation based on seeding characteristics and control |
| US11844311B2 (en) | 2020-10-09 | 2023-12-19 | Deere & Company | Machine control using a predictive map |
| US11849672B2 (en) | 2020-10-09 | 2023-12-26 | Deere & Company | Machine control using a predictive map |
| US11849671B2 (en) | 2020-10-09 | 2023-12-26 | Deere & Company | Crop state map generation and control system |
| US11864483B2 (en) | 2020-10-09 | 2024-01-09 | Deere & Company | Predictive map generation and control system |
| US11874669B2 (en) | 2020-10-09 | 2024-01-16 | Deere & Company | Map generation and control system |
| US11871697B2 (en) | 2020-10-09 | 2024-01-16 | Deere & Company | Crop moisture map generation and control system |
| US11889788B2 (en) | 2020-10-09 | 2024-02-06 | Deere & Company | Predictive biomass map generation and control |
| US11889787B2 (en) | 2020-10-09 | 2024-02-06 | Deere & Company | Predictive speed map generation and control system |
| US11895948B2 (en) | 2020-10-09 | 2024-02-13 | Deere & Company | Predictive map generation and control based on soil properties |
| US11927459B2 (en) | 2020-10-09 | 2024-03-12 | Deere & Company | Machine control using a predictive map |
| US11825768B2 (en) | 2020-10-09 | 2023-11-28 | Deere & Company | Machine control using a predictive map |
| US11727680B2 (en) | 2020-10-09 | 2023-08-15 | Deere & Company | Predictive map generation based on seeding characteristics and control |
| US11983009B2 (en) | 2020-10-09 | 2024-05-14 | Deere & Company | Map generation and control system |
| US11711995B2 (en) | 2020-10-09 | 2023-08-01 | Deere & Company | Machine control using a predictive map |
| US12013245B2 (en) | 2020-10-09 | 2024-06-18 | Deere & Company | Predictive map generation and control system |
| US12013698B2 (en) | 2020-10-09 | 2024-06-18 | Deere & Company | Machine control using a predictive map |
| US11675354B2 (en) | 2020-10-09 | 2023-06-13 | Deere & Company | Machine control using a predictive map |
| US12048271B2 (en) | 2020-10-09 | 2024-07-30 | Deere &Company | Crop moisture map generation and control system |
| US12422847B2 (en) | 2020-10-09 | 2025-09-23 | Deere & Company | Predictive agricultural model and map generation |
| US11650587B2 (en) | 2020-10-09 | 2023-05-16 | Deere & Company | Predictive power map generation and control system |
| US12069986B2 (en) | 2020-10-09 | 2024-08-27 | Deere & Company | Map generation and control system |
| US11845449B2 (en) | 2020-10-09 | 2023-12-19 | Deere & Company | Map generation and control system |
| US12419220B2 (en) | 2020-10-09 | 2025-09-23 | Deere & Company | Predictive map generation and control system |
| US12386354B2 (en) | 2020-10-09 | 2025-08-12 | Deere & Company | Predictive power map generation and control system |
| US11635765B2 (en) | 2020-10-09 | 2023-04-25 | Deere & Company | Crop state map generation and control system |
| US11592822B2 (en) | 2020-10-09 | 2023-02-28 | Deere & Company | Machine control using a predictive map |
| US12178158B2 (en) | 2020-10-09 | 2024-12-31 | Deere & Company | Predictive map generation and control system for an agricultural work machine |
| US12193350B2 (en) | 2020-10-09 | 2025-01-14 | Deere & Company | Machine control using a predictive map |
| US12216472B2 (en) | 2020-10-09 | 2025-02-04 | Deere & Company | Map generation and control system |
| US12329050B2 (en) | 2020-10-09 | 2025-06-17 | Deere & Company | Machine control using a predictive map |
| US11474523B2 (en) | 2020-10-09 | 2022-10-18 | Deere & Company | Machine control using a predictive speed map |
| US20220110251A1 (en) | 2020-10-09 | 2022-04-14 | Deere & Company | Crop moisture map generation and control system |
| US12250905B2 (en) | 2020-10-09 | 2025-03-18 | Deere & Company | Machine control using a predictive map |
| US12271196B2 (en) | 2020-10-09 | 2025-04-08 | Deere &Company | Machine control using a predictive map |
| US12127500B2 (en) | 2021-01-27 | 2024-10-29 | Deere & Company | Machine control using a map with regime zones |
| US12229886B2 (en) | 2021-10-01 | 2025-02-18 | Deere & Company | Historical crop state model, predictive crop state map generation and control system |
| US12310286B2 (en) | 2021-12-14 | 2025-05-27 | Deere & Company | Crop constituent sensing |
| US12302791B2 (en) | 2021-12-20 | 2025-05-20 | Deere & Company | Crop constituents, predictive mapping, and agricultural harvester control |
| US12245549B2 (en) | 2022-01-11 | 2025-03-11 | Deere & Company | Predictive response map generation and control system |
| US12082531B2 (en) | 2022-01-26 | 2024-09-10 | Deere & Company | Systems and methods for predicting material dynamics |
| US12295288B2 (en) | 2022-04-05 | 2025-05-13 | Deere &Company | Predictive machine setting map generation and control system |
| US12284934B2 (en) | 2022-04-08 | 2025-04-29 | Deere & Company | Systems and methods for predictive tractive characteristics and control |
| US12298767B2 (en) | 2022-04-08 | 2025-05-13 | Deere & Company | Predictive material consumption map and control |
| US12358493B2 (en) | 2022-04-08 | 2025-07-15 | Deere & Company | Systems and methods for predictive power requirements and control |
| US12058951B2 (en) | 2022-04-08 | 2024-08-13 | Deere & Company | Predictive nutrient map and control |
| Publication | Publication Date | Title |
|---|---|---|
| SU887717A1 (en) | Device for checking soil consolidation quality | |
| Miwa | Evaluation methods for vibration effect Part 1. Measurements of threshold and equal sensation contours of whole body for vertical and horizontal vibrations | |
| EP0542719A3 (en) | A method for establishing a value for the sensitivity of an acceleration sensor | |
| US3822588A (en) | Apparatus for measuring the hardness of material | |
| FR2354553A1 (en) | DEVICE FOR MEASURING THE DAMPING OF A MOTOR VEHICLE SUSPENSION | |
| CN109916490A (en) | A kind of road vehicle dynamic weigher and method | |
| EP3376184A2 (en) | Apparatus and method for calibrating a weigh-in-motion sensor | |
| US4090393A (en) | Method for the calibration or checking of dynamometers and apparatus embodying same | |
| US3201983A (en) | Dynamically compensated force measuring apparatus | |
| SE463117B (en) | PROVIDED TO MEET CUTTING POWER AND LIMIT OVERLOAD IN A STANDPRESS WITH A DEVICE FOR IMPLEMENTATION OF THE SET | |
| Tschan et al. | Characterization and modelling of silicon piezoresistive accelerometers fabricated by a bipolar-compatible process | |
| US3902373A (en) | Dynamic balancing machine | |
| CN1049976C (en) | Measuring system for indoor dynamic and static triaxial for shearing wave velocity | |
| Scanlan et al. | Dynamic Prediction of Pile Static Bearing Capacity | |
| Tandon | Development of an absolute calibration system for nondestructive testing devices | |
| SU690115A1 (en) | Apparatus for investigating dynamic characteristics of soils | |
| JPS5934602Y2 (en) | portable cone penetrometer | |
| JPS63284451A (en) | Measuring instrument for elasticity | |
| Dupas et al. | A 300-mm-diameter triaxial cell with a double measuring device | |
| SU735960A1 (en) | Device for measuring dynamic elasticity modulus of material specimen | |
| SU651222A1 (en) | Haritonov's method of creating force and standard force-measuring machine for effecting same | |
| SU619864A1 (en) | Device for picking up diagram of impact acceleration piezoconverter directivity | |
| SU1008354A1 (en) | Conmpression tester | |
| SU678367A1 (en) | Standard force-measuring machine | |
| CA1075032A (en) | Method for the calibration or checking of dynamometers and apparatus embodying same |