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Method and device for measuring resiliometer impact kinetic energy

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

Inactive Publication Date: 2009-05-06
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

Method used

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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] The specific implementation methods and steps are:

[0017] (1) Measurement figure 1 The mass m of bounce hammer A1 of rebound hammer A to be measured / calibrated;

[0018] (2) such as figure 1 As shown, the rebound hammer A is impacted along the guide U5 fixed on the steel anvil U1 to the load cell U2 installed on the steel anvil U1, and the impact force signal acquisition and recording device connected through the signal line U3 and the sensor U2 is used 4. Get figure 2 The impact force F(t) of the impact rod A2 shown;

[0019] (3) Yes figure 1 Obtained by the measuring device shown figure 2 The F(t) curve shown is numerically integrated to obtain the impulse I of the shot stick;

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

[0021] (5) Use 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 used 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 kind of strength testing instrument, a rebound tester, is often used to test the strength of building materials such as concrete, mortar, and bricks by hitting the rebound value of the surface of building materials with a certain impact energy. The nominal energy value of the rebound hammer given by the impact kinetic energy of the rebound hammer is an important indicator of the rebound hammer, which directly affects the accuracy of the measurement results. Therefore, the nominal energy value of the rebound hammer is the measurement verification of the rebound hammer. A main parameter of calibration...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/52G01L5/00
Inventor 陈凡徐教宇
Owner CHINA ACAD OF BUILDING RES
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