Fatigue life test and evaluation is an important means to evaluate the life and reliability of wind power spindle forgings under long-term cycle working conditions. The following will introduce the fatigue life test and evaluation of wind power spindle forging from the aspects of test design, data acquisition and analysis, and evaluation methods.
I. Experimental design
- Determine the test target: According to the use environment and working condition of the wind power spindle forging, determine the test life target, fatigue limit and other parameters.
- Test device design: Design suitable test devices, including load loading system, simulated wind field system, etc., to simulate actual working conditions.
- Test parameter setting: Determine the load amplitude, frequency, operating temperature and other test parameters, should be as close as possible to the actual working conditions.
- Sample selection: According to the design and manufacturing requirements of wind power spindle forgings, select samples that meet the standards for testing.
- Data collection and analysis
- Load monitoring: the load applied in the test is monitored and recorded in real time through sensors and other equipment, including load size, frequency and load change law.
- Temperature monitoring: Temperature sensors and other equipment are used to monitor and record the working temperature of the wind power spindle forging to obtain the temperature change rule.
- Vibration monitoring: Use vibration sensors and other equipment to monitor and record the vibration status of the wind power spindle forging, and analyze the relationship between it and fatigue life.
Iii. Data analysis and evaluation
- Fatigue life curve drawing: According to the test data, draw the load-life curve, and carry out curve fitting and analysis to obtain the fatigue life prediction model.
- Life assessment: Through statistical analysis of the fatigue life of the sample in the test, the average life and reliability indicators are obtained to evaluate the life of the wind power spindle forging.
- Failure analysis: Analyze the failure samples in the test, determine the failure causes and failure mechanisms, and provide a basis for improving product design.
- Optimization design: According to the life evaluation results and failure analysis, the design and process improvement of the wind power spindle forging are carried out to improve its fatigue life and reliability.
Summary: Fatigue life test and evaluation of wind power spindle forging can be evaluated under long-term cycle working conditions through the steps of test design, data acquisition and analysis and evaluation methods. Through the analysis and evaluation of the test data, it can provide a basis for the design and optimization of the wind power spindle forging, and further improve its reliability and service life.
