CN100485357C - Method and device for measuring resiliometer impact kinetic energy - Google Patents
Method and device for measuring resiliometer impact kinetic energy Download PDFInfo
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- CN100485357C CN100485357C CNB2006101122158A CN200610112215A CN100485357C CN 100485357 C CN100485357 C CN 100485357C CN B2006101122158 A CNB2006101122158 A CN B2006101122158A CN 200610112215 A CN200610112215 A CN 200610112215A CN 100485357 C CN100485357 C CN 100485357C
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- reisilometer
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- kinetic energy
- resiliometer
- momentum
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Abstract
The present invention is method and device for measuring impact kinetic energy of resiliometer and belongs to the field of resiliometer metering and calibrating technology. Through measuring the hammer impulse the attack rod transmits during attacking and calculating the striking speed of the hammer to the attack rod by means of the impulse-momentum conservation law, the impact kinetic energy of the resiliometer is obtained and used in metering and calibrating the resiliometer. The present invention may be used in different types of resiliometer, and has low measuring cost and fast and convenient resiliometer metering and calibrating.
Description
Technical field
The present invention relates to a kind of method and the device that are used for measuring reisilometer (instrument that is used for the intensity of test architecture material in a kind of field of civil engineering) impact kinetic energy, belong to the measurement verification/calibration field of reisilometer.
Background technology
In field of civil engineering, usually adopt a kind of strength test instrument---reisilometer, by with the rebound value behind certain impact energy attack building material surface, test intensity such as building materialss such as concrete, mortar, bricks.The reisilometer energy nominal value that provides by resiliometer impact kinetic energy is an important indicator of reisilometer, and it directly influences the accuracy of measurement result, so the energy nominal value of reisilometer is a major parameter of reisilometer measurement verification/calibration.
Owing to do not have the effective ways and the device of actual measurement resiliometer impact kinetic energy in the past, though the energy nominal value of reisilometer provides by impact kinetic energy, but at present traditional reisilometer measurement verification/calibration steps, test for the impact kinetic energy nominal value of reisilometer, be still that the elastic potential energy equivalence that stores according to the elastic tension spring with certain rigidity calculates under the regulation tensile elongation, reisilometer is being examined and determine/when calibrating, as long as elastic tension spring rigidity and the active length measured under statical condition satisfy corresponding requirement, the nominal impact kinetic energy of also just giving tacit consent to reisilometer is met.And the impact kinetic energy of actual reisilometer is not only relevant with the rigidity and the length of elastic tension spring, also be subjected to the factor affecting such as friction force of mechanical property, elastic hammer and guide rod of inertial mass, the elastic tension spring of elastic hammer and elastic tension spring under the non-statical condition, thereby the impact kinetic energy of actual reisilometer there is a certain distance with impact kinetic energy by traditional extension spring static(al) potential energy " equivalence " conversion.
Because what present reisilometer calibrating/calibration was adopted is the method for above-mentioned indirectly measurement resiliometer impact kinetic energy, dynamics and static difference have been ignored during its measurement verification/calibration to the impact kinetic energy nominal value of reisilometer, reisilometer measurement verification at present/calibration also stipulated reisilometer must be on the riveting stake of certain degree of hardness, with the rebound height of elastic hammer reach its power stroke to a certain degree as criterion of acceptability, this also is the basic place that classic method can't be set up clear and definite magnitude tracing chain.In addition, adopt traditional measuring method,, measure time-consuming cost height because rigidity, the installation dimension difference of elastic tension spring need to be equipped with different measurement verification/calibration measurement equipment for dissimilar reisilometers.
Summary of the invention
The problem that exists during based on above-mentioned present reisilometer measurement verification/calibration, the objective of the invention is to propose a kind of method and device of measuring resiliometer impact kinetic energy, by this method and apparatus, directly measure the impact energy that calculates reisilometer, and then solve the magnitude tracing problem of resiliometer impact kinetic energy.
The present invention is the elastic hammer momentum that transmits through the attack guide rod during by direct measurement elastic hammer bump, utilize momentum-law of conservation of momentum (or differential or integrated form of Newton second law of equal value), calculate the stroke speed of elastic hammer when the bump elastic stem, directly obtain the impact kinetic energy of reisilometer, thereby realize the measurement verification/calibration to reisilometer, its concrete grammar step is:
(1) the quality m of measurement reisilometer elastic hammer;
(2) but utilize the sensor of the inductive kick power on the riveting stake that is installed on, and the impulsive force signals collecting pen recorder that links to each other with sensor, the survey record reisilometer when being fixed in guide piece on the riveting stake sensor impacted, the impulsive force F (t) that transmits through the reisilometer elastic stem;
(3) utilize formula
Calculate the momentum I of elastic hammer, wherein t
b, t
eBe respectively the initial moment of impact and the finish time of elastic stem;
(4) utilize formula
Speed V when calculating the elastic hammer impact;
(5) utilize formula
Calculate the impact kinetic energy E of elastic hammer
k
Be by the convert impact kinetic energy that obtains reisilometer of the method for measuring elastic tension spring rigidity under the statical condition and active length thereof at present to the calibrating/calibration steps of resiliometer impact kinetic energy, it is a kind of indirectly measurement method, and do not consider in esse kinetic effect, can't set up clear and definite magnitude tracing chain; And because the present invention is directly by measuring the impact kinetic energy of reisilometer, not only realized the north source problem of value of the measurement verification/calibration of reisilometer, and this method is not subjected to the restriction of reisilometer type, dissimilar reisilometers does not need to be equipped with different measurement verifications/calibration measurement equipment, adopt a cover measuring equipment can carry out the impact kinetic energy test of various reisilometers, reduced the measurement cost, also at present traditional calibrating/calibration steps is faster, convenient.
The invention will be further elaborated below in conjunction with the specific embodiment of measurement mechanism.
Description of drawings
Fig. 1 is a measurement mechanism principle of work synoptic diagram of the present invention.
Fig. 2 is the impulsive force signal time-domain curve that utilizes device shown in Figure 1 to record.
Embodiment
Its specific implementation method, step are:
(1) desires the quality m of elastic hammer A1 of the reisilometer A of measurement verification/calibration in the survey sheet 1;
(2) as shown in Figure 1, reisilometer A is impacted the force cell U2 that is installed on the riveting stake U1 along the guide piece U5 that is fixed on the riveting stake U1, utilize the impulsive force signals collecting pen recorder 4 that links to each other with sensor U2 by signal wire U3, obtain the impulsive force F (t) of elastic stem A2 shown in Figure 2;
(3) F shown in Figure 2 (t) curve that measurement mechanism shown in Figure 1 is obtained carries out numerical integration calculating, obtains the momentum I of elastic stem;
(4) utilize formula
Speed V when calculating the elastic hammer impact;
(5) utilize formula
Calculate the impact kinetic energy E of elastic hammer
k
The sensor of measuring impulsive force among the present invention does not limit, and it can adopt types such as resistance-strain type, piezoelectric type, pressure resistance type.
Claims (3)
1, a kind of method of measuring resiliometer impact kinetic energy, it is characterized in that it is the elastic hammer momentum that the attack guide rod transmits during by direct measurement elastic hammer bump, concrete grammar is that reisilometer is impacted the force cell that is installed on the Gang Hing-Wah-Street-West along the guide piece that is fixed on the Gang Hing-Wah-Street-West, the impulsive force signals collecting pen recorder that utilization links to each other with sensor by signal wire, obtain the impulsive force of elastic stem and the impulsive force curve that measures is carried out the numerical integration computing, obtain the momentum of elastic stem, utilize the differential or the integrated form of the Newton second law of momentum-law of conservation of momentum or equivalence, calculate the stroke speed of elastic hammer when the bump elastic stem, directly obtain the impact kinetic energy of reisilometer, thereby realize measurement verification/calibration reisilometer.
2, a kind of method of measuring resiliometer impact kinetic energy, it is characterized in that it is by measuring the momentum of reisilometer elastic hammer, the elastic hammer momentum that utilization records calculates the impact kinetic energy of elastic hammer, thereby realizes the measurement verification/calibration to reisilometer, and its concrete steps are:
(1) the quality m of measurement reisilometer elastic hammer;
(2) the impulsive force F (t) that utilizes the sensor measurement reisilometer to measure impulsive force when impacting, to transmit through the reisilometer elastic stem;
(3) utilize formula
Calculate the momentum I of elastic hammer, wherein t
b, t
eBe respectively the initial moment of impact and the finish time of elastic stem;
(4) utilize formula
Speed V when calculating the elastic hammer impact;
(5) utilize formula
Calculate the impact kinetic energy E of elastic hammer
k
3, a kind of device of measuring resiliometer impact kinetic energy, the composition of this device and being characterised in that:
The riveting stake of elastic hammer shock sensors is measured in a fixed installation;
A sensor that is fixed on the riveting stake, measures the elastic stem impulsive force;
One be fixed on the riveting stake, when being used to guide resiliometer impact and force cell remain on the guide piece of same axis;
An impulsive force signals collecting pen recorder that links to each other with sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101122158A CN100485357C (en) | 2006-08-30 | 2006-08-30 | Method and device for measuring resiliometer impact kinetic energy |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101122158A CN100485357C (en) | 2006-08-30 | 2006-08-30 | Method and device for measuring resiliometer impact kinetic energy |
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| CN1945272A CN1945272A (en) | 2007-04-11 |
| CN100485357C true CN100485357C (en) | 2009-05-06 |
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| CNB2006101122158A Expired - Fee Related CN100485357C (en) | 2006-08-30 | 2006-08-30 | Method and device for measuring resiliometer impact kinetic energy |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121882B (en) * | 2010-01-08 | 2012-09-19 | 宝山钢铁股份有限公司 | Device and method for measuring comprehensive rebound quantity of high-strength steel |
| CN102661904B (en) * | 2012-05-03 | 2014-10-15 | 浙江省计量科学研究院 | Calibrator for rebound value of resiliometer and testing method for rebound value of resiliometer |
| CN102818738B (en) * | 2012-09-04 | 2014-12-10 | 舟山市博远科技开发有限公司 | Rebound apparatus calibrating device and using method thereof |
| CN105259062A (en) * | 2015-11-10 | 2016-01-20 | 李正潮 | Calibration rebound device |
| CN106950023A (en) * | 2017-03-17 | 2017-07-14 | 中国船舶重工集团公司第七�三研究所 | A kind of F t curve simulation devices |
| CN110068410B (en) * | 2019-05-05 | 2020-09-08 | 中国人民解放军国防科技大学 | Passive shock wave impulse measurement sensor based on momentum block |
-
2006
- 2006-08-30 CN CNB2006101122158A patent/CN100485357C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 论回弹仪的标称动能. 刘京生.山西建筑，第2期. 1991 |
| 论回弹仪的标称动能. 刘京生.山西建筑，第2期. 1991 * |
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| CN1945272A (en) | 2007-04-11 |
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Application publication date: 20070411 Assignee: ZHEJIANG PROVINCIAL CONSTRUCTION ENGINEERING QUALITY INSPECTION STATION CO., LTD. Assignor: China Academy of Building Research Contract record no.: 2010330000139 Denomination of invention: Method and device for measuring resiliometer impact kinetic energy Granted publication date: 20090506 License type: Exclusive License Record date: 20100312 |
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