Method and device for measuring resiliometer impact kinetic energy

A rebound hammer, kinetic energy technology, applied in measuring devices, force/torque/work measuring instruments, instruments, etc., can solve problems such as traceability of quantities, and achieve the effect of reducing measurement costs and fast verification/calibration methods

Inactive Publication Date: 2007-04-11
CHINA ACAD OF BUILDING RES
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Problems solved by technology

[0005] Based on the above-mentioned problems existing in the measurement verification / calibration of the hammer hammer, the purpose of the present invention is to propose a method and device for measuring the impact kinetic energy of the hammer hammer, through which the impact energy of the hammer hammer can be directly measured and calculated , and then solve the problem of traceability of the impact kinetic energy of the hammer

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  • Method and device for measuring resiliometer impact kinetic energy
  • Method and device for measuring resiliometer impact kinetic energy
  • Method and device for measuring resiliometer impact kinetic energy

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Embodiment Construction

[0016] Its specific implementation method and steps are:

[0017] (1) measure the mass m of the hammer A1 of the hammer A1 of the rebound hammer A for measurement verification / calibration in Fig. 1;

[0018] (2) As shown in Figure 1, the rebound instrument A is impacted on the load cell U2 installed on the steel anvil U1 along the guide device U5 fixed on the steel anvil U1. The impact force signal acquisition and recording device 4 obtains the impact force F(t) of the bullet driver A2 shown in FIG. 2 ;

[0019] (3) F(t) curve shown in Fig. 2 that measuring device shown in Fig. 1 obtains is carried out numerical integral calculation, obtains the impulse I of the ejection rod;

[0020] (4) Using the formula V = I 2 m Calculate the velocity V of the impact hammer;

[0021] (5) Using the formula E k = 1 2 ...

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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 [0001] The invention relates to a method and a device for measuring the impact kinetic energy of a rebound hammer (an instrument for testing the strength of building materials in the field of civil engineering), and belongs to the field of measurement verification / calibration of the rebound hammer. Background technique [0002] In the field of civil engineering, a strength testing instrument, the rebound hammer, is often used to test the strength of building materials such as concrete, mortar, bricks, etc. by rebounding the surface of the building material with a certain impact energy. The nominal energy value of the rebound hammer given according to the impact kinetic energy of the rebound hammer is an important indicator of the hammer, which directly affects the accuracy of the measurement results. Therefore, the nominal energy value of the rebound hammer is the measurement verification / A major parameter of calibration. [0003] Since there was no effecti...

Claims

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Application Information

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IPC IPC(8): G01N3/52G01L5/00
Inventor 陈凡徐教宇
Owner CHINA ACAD OF BUILDING RES
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