SU705250A1 - Device for measuring impact deformations - Google Patents
Device for measuring impact deformationsInfo
- Publication number
- SU705250A1 SU705250A1 SU762321457A SU2321457A SU705250A1 SU 705250 A1 SU705250 A1 SU 705250A1 SU 762321457 A SU762321457 A SU 762321457A SU 2321457 A SU2321457 A SU 2321457A SU 705250 A1 SU705250 A1 SU 705250A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- deformations
- measuring impact
- strain gauge
- strain
- working
- Prior art date
Links
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Description
(54) УСТГОЙСТВО ДЛЯ ИЗМЕРЕНИЯ УДАРНЫХ ДЕФОРМАЦИЙ(54) CONSTITUTION FOR MEASURING SHOCK DEFORMATIONS
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Изобретение относитс к измерительной технике и может быть применено дл регистрации ударных нагрузок как при лабораторных испытани х , так и при проведении натурный испытаний , например, в авиастроении.The invention relates to a measurement technique and can be applied to register shock loads both in laboratory tests and in field tests, for example, in aircraft manufacturing.
Известен тензомост, содержащий источник Литани , рабочий и компенсационный тензорезисторы 1.Known strain gauge containing the source of Litani, working and compensation strain gages 1.
Однако такое устройство не обеспечивает достаточную точность при регистрации ударных деформаций.However, such a device does not provide sufficient accuracy when registering shock deformations.
Наиболее близким к изобретению по технической сущности и достигаемому результа1у вл етс устройство дл измерени ударных деформаций, содержащее источник пигани , регистратор и сбалансированный тензомост, в смежные плечи которого включены рабочий и компенсационный тензорезисторы 2.The closest to the invention to the technical essence and the achieved result is a device for measuring shock deformations, containing a source of pigment, a recorder and a balanced strain gauge, the adjacent arms of which include working and compensating strain gages 2.
Из-за вли ни базы тензорезистора Искажаетс сигнал, что снижает точность устройства.Due to the influence of the base strain gauge, the signal is distorted, which reduces the accuracy of the device.
Целью изобретени вл етс повышение точности .The aim of the invention is to improve the accuracy.
Это достигаетс тем, что в тензомост последовательно компенсационному и рабочему тензорезисторам включены соответственно активное сопротивление и R-L цепочка, а полное сопротивление ее выбирают из соотношени :This is achieved by the fact that the resistance and the R-L chain, respectively, are included in the strain gauge in series with the compensating and working strain gauges, and their total resistance is chosen from the relation:
- , inii -, inii
ZCS-lHZCS-lH
2.С2.With
,zШ ,zh
где I - база рабочего тензорезистора;where I is the base of the working strain gauge;
С - скорость звука в образце; . W - основна кругова частота регистрируемого сигнала.C is the speed of sound in the sample; . W - the main circular frequency of the recorded signal.
На чертеже представлена схема устройства.The drawing shows a diagram of the device.
Устройство содержит сбалансированный тензомост 1, в смёнаше плечи которого включены рабоий 2 и крмп1гнсащ1онный 3 тензорезисторы ..The device contains a balanced strain gauge 1, in the changing of the shoulders of which are included slave 2 and crmp1 alternator 3 strain gauges ..
Последовательно компенсационному тензорезистору включено активное сопротивление 4, а последовательно рабочему - R-L цепочка 5. К диагонали моста подключены источник 6 питани и регистратор 7. В иротивополоА:ные шгечи моста включены два дополнительных резистора 8 и 9.The resistance resistance 4 is connected in series to the resistance strain gage, and the R-L chain 5 is in series to the working resistor. The power supply 6 and the recorder 7 are connected to the bridge diagonal. Two additional resistors 8 and 9 are connected to the opposite circuit.
Устройство работает следующим образом.The device works as follows.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU762321457A SU705250A1 (en) | 1976-02-04 | 1976-02-04 | Device for measuring impact deformations |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU762321457A SU705250A1 (en) | 1976-02-04 | 1976-02-04 | Device for measuring impact deformations |
Publications (1)
Publication Number | Publication Date |
---|---|
SU705250A1 true SU705250A1 (en) | 1979-12-25 |
Family
ID=20647939
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU762321457A SU705250A1 (en) | 1976-02-04 | 1976-02-04 | Device for measuring impact deformations |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU705250A1 (en) |
-
1976
- 1976-02-04 SU SU762321457A patent/SU705250A1/en active
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