SU1427167A1 - Method of measuring deformation of graduating cantilever strain-gauge beam of equal cross-section - Google Patents

Method of measuring deformation of graduating cantilever strain-gauge beam of equal cross-section Download PDF

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Publication number
SU1427167A1
SU1427167A1 SU864130543A SU4130543A SU1427167A1 SU 1427167 A1 SU1427167 A1 SU 1427167A1 SU 864130543 A SU864130543 A SU 864130543A SU 4130543 A SU4130543 A SU 4130543A SU 1427167 A1 SU1427167 A1 SU 1427167A1
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SU
USSR - Soviet Union
Prior art keywords
section
measuring
graduating
deformation
equal cross
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Application number
SU864130543A
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Russian (ru)
Inventor
Леонид Федорович Моисеев
Ирина Иннокентьевна Померанцева
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Предприятие П/Я В-2942
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Priority to SU864130543A priority Critical patent/SU1427167A1/en
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Publication of SU1427167A1 publication Critical patent/SU1427167A1/en

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Abstract

Изобретение относитс  к способам градуировки тензорезисторов. Цель изобретени  - повьшение точности измерени  деформаций консольной тензо- балки равного сечени  в зоне,наклейки тензорезистора. Дл  этого нагружают тензобалку до получени  одного и того же прогиба f сначала в конечной точке d, а потом в другой фиксированной точке с, регистриру  каждый раз изменени  в показани х тензорезистора. 1 ил.The invention relates to methods for calibrating strain gauges. The purpose of the invention is to increase the accuracy of measuring the deformations of a cantilever girder of equal section in the zone, and to insert a strain gauge. To do this, load the strainer until the same deflection f is obtained, first at the end point d, and then at another fixed point c, registering each time the change in the readings of the strain gauge. 1 il.

Description

(L

Изобретение относитс  к измерительной технике, в частности к способам градуировки тензорезисторов.The invention relates to a measurement technique, in particular to methods for calibrating strain gauges.

Цель изобретени  - повышение точ- ности измерени  деформаций консольной тензобалки равного сечени  в зоне наклейки градуируемого тензорезистора.The purpose of the invention is to improve the accuracy of measuring deformations of a cantilever tensioner of equal cross section in the area of gluing of a graduated strain gauge.

На чертеже представлена схема реализации предлагаемого способа. The drawing shows the implementation of the proposed method.

На чертеже обозначено: 1 - градуи- ровочна  консольна  тензобалка равного сечени ; 2 - градуируемый тензоре- Зистор; Р - воздействующа  нагрузка; JL и h - длина и толщина тензобал- ки; f - прогиб тензобалки в точке d при нагружении I и в точке с при на- Гружении II; а-координата фиксированной точки с.In the drawing it is indicated: 1 - graduated console load-work roller of equal section; 2 - graduated tensor-Zistor; P - acting load; JL and h are the length and thickness of the strainer; f is the deflection action deflection at point d under load I and at point c under loading I; a-coordinate of a fixed point

Способ осуществл ют следующим об- разом.The method is carried out as follows.

Измер ют длину 1 и толщину h ненагруженной балки с наклеенным тензо- резистором 2. 5чтем балку 1 дважды (нагружают: первый раз - до получе- :ни  прогиба f, который измер ют, в точке d, а второй раз - до получени  такого же прогиба f в фиксированной точке с, отсто щей от конечной точкиMeasure length 1 and thickness h of an unloaded beam with a glued strain resistance resistor 2. 5 so the beam 1 twice (load: the first time to get: no deflection f, which is measured at point d, and the second time to get the same deflection f at a fixed point with a distance from the end point

d на рассто нии а. При первом и втором нагружени х фиксируют соответственно изменени  сопротивлени  градуируемого тензорезистора uR, и uR. Градуировочную деформацию 6, балки в зоне наклейки тензорезистора при первом нагружении определ ют по формулеd at a distance a. During the first and second loads, the changes in the resistance of the calibrated resistance strain gage uR and uR are recorded, respectively. The calibration deformation 6, the beams in the area of the gage of the strain gauge at the first loading is determined by the formula

Р - ID S fP - ID S f

( 1-а ) (1-a)

где Where

m m

u,Rj R Точность определени  ,повьшаетс  примерно в 2 раза благодар  исключению из, расчетной формулы значени  координаты X места наклейки тензорезистора , котора  при изгибе балки измен етс  и не может быть надежно измерена.u, Rj R The accuracy of the determination is increased approximately 2 times due to the exclusion from the calculation formula of the value of the X coordinate of the position of the gage of the strain gauge, which varies during bending of the beam and cannot be reliably measured.

Claims (1)

Формула изобретени Invention Formula Способ определени  деформации градуировочной консольной тензобалки равного сечени , заключающийс  в том, что измер ют длину и толщину балки, изгиба1от балку нагружением ее- свободного конца и измер ют ее максимальный прогиб в конечной точке, а по результатам вьтолненньгх измерений определ ют деформацию балки в месте наклейки градуируемого тензорезистора, отличающийс  тем, что, с целью повышени  точности измерений, дополнительно нагружают балку до получени  измеренного прогиба в точке, отсто щей от конечной на фиксированную величину, ив каждом случае нагру- жени  измер ют изменение сопротивлени  тензорезистора.The method of determining the deformation of a calibration cantilever tensioner of equal section, which consists in measuring the length and thickness of the beam, bending from the beam by loading its free end and measuring its maximum deflection at the end point, and determining the deformation of the beam in place of the sticker a graduated strain gauge, characterized in that, in order to increase the measurement accuracy, the beam is additionally loaded until a measured deflection is obtained at a point away from the final one by a fixed value y, willows nagru- each case measured voltage change in gage resistance.
SU864130543A 1986-07-07 1986-07-07 Method of measuring deformation of graduating cantilever strain-gauge beam of equal cross-section SU1427167A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU864130543A SU1427167A1 (en) 1986-07-07 1986-07-07 Method of measuring deformation of graduating cantilever strain-gauge beam of equal cross-section

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU864130543A SU1427167A1 (en) 1986-07-07 1986-07-07 Method of measuring deformation of graduating cantilever strain-gauge beam of equal cross-section

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SU1427167A1 true SU1427167A1 (en) 1988-09-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4132114A1 (en) * 1991-09-26 1993-04-01 Siemens Ag Measurement pick=up for force sensor - has spring connected to mechanical-electrical transducer which generates signal corresp. to variation in distance caused by force

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Рузга 3. Электрические тензомет ры сопротивлени . М.: Госэнергоиздат, 1961, с. 65. *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4132114A1 (en) * 1991-09-26 1993-04-01 Siemens Ag Measurement pick=up for force sensor - has spring connected to mechanical-electrical transducer which generates signal corresp. to variation in distance caused by force

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