Correlation of Fatigue Design Data on Springs of Many Types

1964 ◽  
Author(s):  
George W. Kurasz ◽  
William R. Johnson
Keyword(s):  
Design Data ◽  
Fatigue Design

The Study on the Fatigue Test and Reliability for the Steel of Train Wheel

2012 ◽  
Vol 198-199 ◽  
pp. 146-149
Author(s):  
Wen Qin Han ◽  
Jin Yu Zhou
Keyword(s):  
Fatigue Life ◽  
Safety Evaluation ◽  
Fatigue Tests ◽  
Fatigue Properties ◽  
Design Standards ◽  
Design Data ◽  
Fatigue Design ◽  
Grouping Method ◽  
Fluctuation Method ◽  
Curve Equation

To obtain fatigue design data of the train wheel steel , the fatigue tests were carried out for the steel of K type and B type train wheel separately, which fatigue limit was measured using the fluctuation method, the fatigue life of two kinds of wheel steels were tested using the grouping method at the three stress levels, two different materials and different structures have an influence on the fatigue properties of the wheels using reliability principle. The fatigue life distribution of the B type is scattered relatively . S-N curve equation and P-S-N curve equation of the two kinds of steel were calculated . The theoretical basis were put up for developing design standards and safety evaluation of the both wheel.

Experimental Study on the Fatigue Properties and Reliability for the Steel of Elastic Oil Sump

2013 ◽  
Vol 300-301 ◽  
pp. 1377-1380
Author(s):  
Bin Li ◽  
Zong De Liu ◽  
Peng Duan
Keyword(s):  
Large Scale ◽  
Stress Ratio ◽  
Cyclic Stress ◽  
Probabilistic Methods ◽  
Life Assessment ◽  
Fatigue Properties ◽  
Test Results ◽  
Design Data ◽  
Cyclic Stress Ratio ◽  
Fatigue Design

The elastic oil sump is commonly used as support parts in large-scale thrust bearing. It often operates under fluctuating load conditions during service. So, fatigue analysis of the material of the elastic oil sump is of great significance. In order to obtain the fatigue design data of the material of the elastic oil sump, the systematic tests on uniaxial tension-compression fatigue at room temperature are made. The fatigue limits and the fatigue life curves of the steel of the elastic oil sump are determined at different cyclic stress ratio. The P-S-N equations are calculated by the probabilistic methods. The test results provide a theoretical basis for the safety of life assessment of the elastic oil sump.

The Fatigue Reliability Research of the CL50A Steel

2012 ◽  
Vol 482-484 ◽  
pp. 958-961
Author(s):  
Wen Qin Han ◽  
Jin Yu Zhou
Keyword(s):  
Theoretical Basis ◽  
Safety Evaluation ◽  
Fatigue Tests ◽  
Probability Method ◽  
Fatigue Reliability ◽  
Design Standards ◽  
Design Data ◽  
Fatigue Design ◽  
Grouping Method ◽  
Curve Equation

To obtain fatigue design data of the CL50A steel for meeting best fatigue reliability , The fatigue tests were carried out for the CL50A steel, the fatigue life of the steel were tested using the grouping method at the three stress levels. Using probability method, S-N curve equation and P-S-N curve equation of the steel were calculated , the estimation equation of P-S-N curve with any reliability was worked out, the theoretical basis were put up for developing design standards and safety evaluation of the steel.

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