SU666447A1 - Sensor of instanteneous values of mechanical stresses in a specimen - Google Patents
Sensor of instanteneous values of mechanical stresses in a specimenInfo
- Publication number
- SU666447A1 SU666447A1 SU772477431A SU2477431A SU666447A1 SU 666447 A1 SU666447 A1 SU 666447A1 SU 772477431 A SU772477431 A SU 772477431A SU 2477431 A SU2477431 A SU 2477431A SU 666447 A1 SU666447 A1 SU 666447A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- sensor
- mechanical stresses
- values
- instanteneous
- specimen
- Prior art date
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
1one
Изобретение относитс к измерительным устройствам экспериментальной механики дл определени мгновенных зна- чений механических напр жений, возникающих в деформируемых твердых телах при импульсном воздействии, в результате которого в объекте возбуйодаетс волна напр жений.The invention relates to experimental mechanics measuring devices for determining the instantaneous values of mechanical stresses arising in deformable solids under a pulsed effect, as a result of which a stress wave is excited in an object.
Известны датчики дл определени . мгновенных значений механических напр жений , построенные по принципу включени преобразовател (упругий динамометр , пьезоэлемент, по;1 ризованна пленка ) последовательно с исследуемым объектом в направлении распространени волны ij. Однако такое выключение преобразователей нарушает физическую и геометрическую однородность объекта, что приводит к искажению исследуемого волнового процесса и не позвол ет производить синхронную регистрацию напр жений и деформаций в одном сечении образца , необходимую дл определени диаграммы деформировани материала приSensors are known for determination. instantaneous values of mechanical stresses, built on the principle of switching on the converter (elastic dynamometer, piezoelectric element, by; 1 film) in series with the object under study in the direction of wave ij propagation. However, such switching off of the transducers violates the physical and geometrical homogeneity of the object, which leads to distortion of the wave process under study and does not allow simultaneous recording of stresses and strains in one section of the sample, which is necessary to determine the material deformation pattern at
импульсном нагружении. Наиболее близким к изобретению по техничес1 ой сущности вл етс индукционный датчик скорости , провод щий контур которого жестко св зан с поверхностью объекта в контрольной точке и движетс вместе с ней под действием волны напр жений в посто нном магнитном поле 2. Контур датчика изготовлен из тонкой проволоки, и его мала масса, присоединенна к поверхности , практически не вли ет на движение объекта. Однако ЭДС индукции, возникающа в контуре, такого датчика, пропорциональна скорости движени ,-а не величине механических напр жений, дейст5 вующих в контрольной точке исследуемого объекта.impulse loading. The closest to the invention is technically an inductive speed sensor, the conductive loop of which is rigidly connected to the surface of the object at the control point and moves with it under the action of a voltage wave in a constant magnetic field 2. The sensor circuit is made of thin wire. and its low mass, attached to the surface, has virtually no effect on the movement of the object. However, the induced emf arising in the circuit of such a sensor is proportional to the speed of movement, not to the magnitude of the mechanical stresses acting at the test point of the object under study.
Целью изобретени вл етс повышение точности и достоверности импульсных измерений при определении механических The aim of the invention is to improve the accuracy and reliability of pulse measurements in the determination of mechanical
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772477431A SU666447A1 (en) | 1977-04-19 | 1977-04-19 | Sensor of instanteneous values of mechanical stresses in a specimen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772477431A SU666447A1 (en) | 1977-04-19 | 1977-04-19 | Sensor of instanteneous values of mechanical stresses in a specimen |
Publications (1)
Publication Number | Publication Date |
---|---|
SU666447A1 true SU666447A1 (en) | 1979-06-05 |
Family
ID=20705544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU772477431A SU666447A1 (en) | 1977-04-19 | 1977-04-19 | Sensor of instanteneous values of mechanical stresses in a specimen |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU666447A1 (en) |
-
1977
- 1977-04-19 SU SU772477431A patent/SU666447A1/en active
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