Method for detecting bending mechanical property of test sample

Abstract

The invention discloses a method for detecting bending mechanical property of a test sample. The method for detecting the bending mechanical property of the test sample comprises the following steps of S1, selecting a plurality of groups of test samples; and moreover, correspondingly marking the test samples as A1 to An in sequence; S2, placing the test sample with the mark of A1 on a support, andusing a fixture to fix the two ends of the test sample A1 on the support; S3, applying a pressure to the test sample A1 by using a piston rod of a hydraulic cylinder, recording lengths H1 from the bent arc top of the test sample A1 to horizontal positions at the two ends of the test sample A1, and recording the pressure of the hydraulic cylinder as F1; S4, repeating the steps S1 to S3 till all detection of the test samples A1 to An is finished, and obtaining two groups of data H1-Hn and F1-Fn; and S5, making a plane rectangular coordinate graph with the pressure F as a horizontal coordinate and the length H as a vertical coordinate in a plane rectangular coordinate system, and then, drawing a mean value of the graph according to the plane rectangular coordinate graph. The method for detecting the bending mechanical property of the test sample, disclosed by the invention, has the advantages that the detection method is simple, the operability is high, and the bending forming performance of the test sample can be more comprehensively and accurately tested.

Description

technical field [0001] The invention belongs to the technical field of detecting the bending mechanical properties of a sample, and in particular relates to a method for detecting the bending mechanical properties of a sample. Background technique [0002] Usually, the bending test is only stipulated at a certain bending radius and bending angle. After the bending test, no magnification is used for observation. If there is no visible crack on the outer surface of the bent sample, the bending performance of the sample is evaluated to be qualified. However, this may cause the test to be unqualified. The bending sample also enters the data record, so that the recorded data will lead to data errors; [0003] The clamping of the sample is also not stable. Usually, the sample is only placed on the support, and the two ends are not fixed. This will easily cause the sample to shift after pressure is applied, resulting in inaccurate test data. [0004] For this reason, we propose a ...

AI Technical Summary

Problems solved by technology

[0002] Usually, the bending test is only stipulated at a certain bending radius and bending angle. After the bending test, no magnified observation is used. If there is no visible crack on the outer surface of the bent sample, the bending performance of the sample is evaluated to be qualified. However, this may cause the test to be unqualified. The bending sample also enters the data record, so that the recorded data will lead to data errors;

[0003] The clamping of the sample is also not stable. Usually, the sample is only placed on the support, and the two ends are not fixed. This will easily cause the sample to shift after pressure is applied, resulting in inaccurate test data.

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