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    • 93. 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。
    • 96. 发明授权
    • Miniaturized displacement transducer assembly
    • 小型化位移传感器组件
    • US5777467A
    • 1998-07-07
    • US590835
    • 1996-01-24
    • Steven W. ArmsChristopher P. Townsend
    • Steven W. ArmsChristopher P. Townsend
    • G01B7/24G01D5/22G01B7/14G01B7/30H01F5/00
    • G01D5/2216G01B7/24
    • The novel differential variable reluctance transducer assembly is comprised of an ultra miniaturized device encased in stainless steel. The assembly contains a free sliding, magnetically permeable core and two coils surrounding the core. A split ring mounting adapter system allows for a variable gauge length and interchangeable mounting pins. A highly flexible core carrier tube and support wire allows for significant bending without failure, does not interfere with the coils detection of the core, and protects the core from corrosion. A sleeve strain relief sheath has been incorporated with the sensor to avoid excessive strain to lead wires during and after installation. The position of the core is detected by measuring the coils' differential reluctance and transmitted by means of wires or telemetry to measuring equipment.
    • 新颖的差分可变磁阻传感器组件由一个装在不锈钢中的超小型化器件组成。 该组件包含一个自由滑动的导磁芯和围绕该芯的两个线圈。 开环安装适配器系统允许可变的长度和可互换的安装销。 高度柔性的芯托管和支撑线允许显着的弯曲而不发生故障,不会干扰铁芯的线圈检测,并保护芯不受腐蚀。 传感器已经安装了套筒应变消除护套,以避免安装过程中和安装后导线的过度应变。 通过测量线圈的差分磁阻并通过电线或遥测传输到测量设备来检测磁芯的位置。