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    • 2. 发明公开
    • 회전 기기의 구동 샤프트 시험 방법
    • 检查旋转机械驱动轴状态的方法
    • KR1020080040628A
    • 2008-05-08
    • KR1020077028495
    • 2006-05-31
    • 제이에스피엠
    • 버랏올리비에피에르카발리에쟝조셉
    • G01N29/26G01N29/24G01N29/265G01N29/34
    • G01N29/2456G01N29/043G01N29/262G01N29/265G01N29/341G01N2291/0421G01N2291/0422G01N2291/106G01N2291/269
    • The invention relates to a method for non-distructive testing of a drive shaft (110), which is accessible from one end thereof, by means of an annular ultrasonic multi-element longitudinal wave transducer (900;1000) comprising independent elements excitable by equifrequent electric pulses for which the inventive method consists in applying different electronic phase shiftings to the pulses transmitted thereto. Said electronic phase shifting makes it possible to focus or deviate a final beam which is synthesised by the totality of elements forming the transducer and to concentrate said final beam in such a way that a generally cylindrical cross-section thereof substantially smaller than the testable shaft cross-section is adopted and is highly energetic at a long distance by a wave guide action produced by the cylindrical shape of the shaft.
    • 本发明涉及一种通过环形超声波多元素纵波传感器(900; 1000)可以从其一端接近的驱动轴(110)的非破坏性测试方法,所述环形超声波多元素纵波传感器(900; 1000)包括通过等效的可激发的独立元件 本发明方法的电脉冲包括对传送给其的脉冲应用不同的电子相移。 所述电子相移使得可以聚焦或偏离由形成换能器的元件的整体合成的最终光束,并且以使得其基本上小于可测试轴的大致圆柱形横截面交叉的方式集中所述最终光束 通过由轴的圆柱形形成的波导作用,被采用并且长距离地高能量化。