Fatigue life analysis of die forged railway axle manufactured from C30 steel

• Main Authors: Libor Trško, Otakar Bokůvka, František Nový, Branislav Hadzima
• Format: Article
• Language: English
• Published: Univerzity of Zilina. Faculty of Mechanical Engineering 2014-06-01
• Series: Materiálové Inžinierstvo
• Subjects: Railway axle; High frequency fatigue testing; steel C30; modulus of elasticity
• Online Access: http://ojs.mateng.sk/index.php/Mateng/article/view/142

<p>With respect to the manufacturing process, different parts of one structural component can have different fatigue properties. In this study, the fatigue life of a railway axle manufactured from C30 steel by die forging is evaluated in the part of the axle bolster and axle body. According to the fatigue test results obtained at high frequency tension - compression fatigue tests (f ≈ 20 kHz, R = -1, T = 20 ± 5 °C), due to the higher level of work hardening of the axle bolster, the fatigue strength of material in this part is significantly higher than in the axle body. Different fatigue strength of these parts were observed despite the fact, that results of static tensile tests did not proved any important differences in the ultimate tensile strength, yield point and elongation.</p><p> </p>