Entirety and part combined identification method of ballastless track damage
An identification method and ballastless track technology, which is applied in the direction of analyzing solids using sound waves/ultrasonic waves/infrasonic waves, can solve problems such as unsuitable ballastless track damage detection, and achieve high detection accuracy and easy test operation
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[0018] figure 1 The working process of the method of the present invention is expressed. First, the overall damage identification method-curvature modal method is used to determine the area where the damage occurs; secondly, the local damage detection technology-shock echo method is used to further determine the damage depth in the damaged area; Accurately locate the spatial position of the damage, that is: 1) Arrange acceleration sensors at a certain distance on the track slab, use multi-point excitation and multi-point acquisition to collect the surface acceleration of the track slab, and then perform modal analysis to identify the rough area of the damage ; 2) After 1) is completed, the shock echo technology is used to identify the depth of the damage, and finally locate the spatial position of the damage accurately.
[0019] In order to verify the accuracy of Gaussian curvature in identifying ballastless track damage, a slab ballastless track model was made indoors, with...
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