The Evaluation for Fatigue Life of Trolley Line Structure by Uniaxial Tension Fatigue Test

초록

The trolley line is a kind of important equipment among electric railway equipments since it contacts directly with pantograph and supplies electricity on the electromotive. Over recent years, the evaluation for bending fatigue life of trolley line structure specimen became more important because of the bending fatigue breakage accidents occurred several times at the Shinkansen trolley line in East Japan Railway Company. In this study, we estimate fatigue life of the trolley line structure by uniaxial tension fatigue life using standard specimen. This estimation method for fatigue life of the trolley line structure can be achieved saving research funds and time, meantime, reducing the difficulty of the fatigue life evaluation of the trolley line.