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Method for measuring absorption energy of pendulum impact tester and puncture tester by weight method

An impact testing machine and energy-absorbing technology, which is applied in the field of measurement and inspection, can solve the problems that enterprises cannot bear, the calibration holes cannot be unified, and the loading weights are not fundamentally clarified.

Active Publication Date: 2013-02-27
WUXI MEASUREMENT & TESTING CENT
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, the absorbed energy of the pendulum impact testing machine is obtained by impacting the standard block. This method is of course very scientific, but the impact standard block is expensive, and each test needs to impact three standard blocks of high, medium and low. Unaffordable, the test is difficult to implement widely
The detection of the puncture testing machine only explains the principle of "doing work on the weight" in general, and does not fundamentally clarify the relationship between the amount and position of the loaded weight and the amount of work done, so that each manufacturer has its own set. The special weights and the calibration holes cannot be unified, and of course the weights of the weights cannot be unified. In order to unify the national value, it is necessary to study the weight method to measure the absorbed energy of the pendulum impact testing machine and the puncture testing machine

Method used

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  • Method for measuring absorption energy of pendulum impact tester and puncture tester by weight method
  • Method for measuring absorption energy of pendulum impact tester and puncture tester by weight method
  • Method for measuring absorption energy of pendulum impact tester and puncture tester by weight method

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example

[0167] Example: Design a cardboard puncture tester calibration weight comparison table, the cardboard puncture tester has 4 gears, the swinging body moments are 6Nm, 12Nm, 24Nm, 48Nm, the initial angle α is 90°, and the measured calibration distance L is 265mm , the calibration angle β is 35°.

[0168] The calibration weight comparison table shown in Table 1 can be designed through the mathematical formula of energy absorption,

[0169] Table 1

[0170]

[0171]

[0172] Note: The force value of the designed calibration weight should be an integer as much as possible, which is convenient for making standard force value weights. The theoretical value of absorbed energy should be more evenly distributed between 20% and 80% of the initial potential energy. Through this method, a comparison table of calibration weights can be designed for pendulum impact testing machines and puncture testing machines of different specifications.

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Abstract

The invention discloses a method for measuring absorption energy of a pendulum impact tester and a puncture tester by a weight method. The method comprises the following steps: measuring the torque of a swing body; measuring an initial angle; measuring the position of a weight calibrating point; determining a calibrated weight comparison table; and detecting by the calibrated weight comparison table. According to the method, the measurement cost is reduced, and the measurement operation is simple and convenient, so that the method can be widely implemented.

Description

technical field [0001] The invention discloses a method for measuring the absorbed energy of a pendulum impact testing machine and a puncture testing machine by a weight method, and belongs to the technical field of measurement and inspection. Background technique [0002] The working principle of the pendulum impact testing machine and the puncture testing machine is a swinging body with a certain potential energy. After falling, the potential energy is converted into kinetic energy. Dissipate the energy of the pendulum, the height of the pendulum is lower than the initial state, and the absorbed energy is indicated. [0003] In the existing technology, the absorbed energy of the pendulum impact testing machine is obtained by impacting the standard block. This method is of course very scientific, but the impact standard block is expensive, and each test needs to impact three standard blocks of high, medium and low. Overwhelming, the test is difficult to implement widely. ...

Claims

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Application Information

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IPC IPC(8): G01M7/08G01N3/30
Inventor 杨哓伟
Owner WUXI MEASUREMENT & TESTING CENT
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