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    • 1. 发明授权
    • Method and device for determining the neutral temperature of welded
tracks
    • 用于确定焊接轨迹的中性温度的方法和装置
    • US5992241A
    • 1999-11-30
    • US945985
    • 1998-01-26
    • Gyorgy PosgayPeter MolnarFerenc VargaTibor ZsakaiAlfonz SzamosJanos BeliJozsef Vegi
    • Gyorgy PosgayPeter MolnarFerenc VargaTibor ZsakaiAlfonz SzamosJanos BeliJozsef Vegi
    • G01N27/72G01B7/24
    • G01N27/725
    • A method for determining the longitudinal loading acting on a beam, such as a rail of a railway track subjected to longitudinal loading and, in particular, for determining the neutral temperature of railway tracks. The beam is energized longitudinally in the acoustic frequency range, and the level of magnetic Barkhausen noise at the surface of the energized region is measured. Measurements of the magnetic Barkhausen noise are taken for different longitudinal stress states and used for plotting the calibration curve of the magnetic Barkhausen noise as a function of longitudinal stress, the Barkhausen noise being measured at least at three points on the face of the built-in beam, and the calibration curve is used for determining the longitudinal loading on the cross-section in question using weighted averaging. The neutral temperature of the railway track is then calculated considering the modulus of elasticity, coefficient of thermal expansion and temperature of the rail.
    • PCT No.PCT / HU96 / 00027 Sec。 371日期1998年1月26日 102(e)1998年1月26日PCT PCT 1996年5月9日PCT公布。 第WO96 / 35947号公报 日期1996年11月14日一种用于确定作用在梁(例如经受纵向载荷的铁路轨道的轨道)上的纵向载荷的方法,特别是用于确定铁路轨道的中性温度。 光束在声频范围内纵向通电,并测量通电区域表面的磁性Barkhausen噪声水平。 采用不同纵向应力状态测量磁性Barkhausen噪声,并用于绘制磁性Barkhausen噪声的校准曲线作为纵向应力的函数,巴克豪森噪声至少在内置的三个点上测量 光束,并且校准曲线用于使用加权平均来确定所讨论的横截面上的纵向载荷。 考虑到弹性模量,热膨胀系数和轨道温度,计算出铁路轨道的中性温度。