Crankshaft bend fatigue test system and method

Abstract

The invention discloses a crank bending fatigue experiment system and method. The system is mainly made up of resonance desk, vibration generator, transducer, programmable logic controller, sensor group, stress amplifier and computer. The invention reduces the manpower burden; the operation is simple and convenient. The accuracy is upgraded greatly.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a crankshaft bending fatigue test system and test method applied to mechanical product reliability evaluation and research. Background technique [0002] The reliability of mechanical products has always been concerned by people because of its important impact on human production and life. As a key bearing part of internal combustion engine, one of the main contents of crankshaft reliability is its bending fatigue problem under the action of high cycle fatigue stress. With the continuous strengthening of internal combustion engines, this problem will inevitably exist for a long time as a hot spot. [0003] Due to the complexity of the crankshaft fatigue problem, there are still many limitations in the current technical level to analyze the reliability of the crankshaft in actual work through calculation. It is necessary to simulate the working process through the test method to obtain som...

AI Technical Summary

Problems solved by technology

[0006] (1) The load accuracy of the test device is low, about ±5%;

[0007] (2) The load calibration calculation method is relatively backward; the precise mathematical statistics and analysis methods are not fully utilized to process the test data; the test results and analysis results have problems of poor authenticity and accuracy

[0008] (3) Modern test control technology and scientific test organization and management methods are not adopted; the system has a low level of intelligence and automation

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