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    Multi function nondestructive testing instrument for ballastless track (type III)

    Device name
    Multi function nondestructive testing

     Proprietary wide-area signal pickup device to ensure the quality of the collected signal


    Planar imaging, accurate positioning



    product description


     BQIM management visualization



     According to the specific characteristics of railway engineering, we developed voids and damages for slab ballastless tracks (CRTSⅡ, Ⅲ) based on shock elastic waves, internal defects of bridge piers and 0 # blocks, and delamination of tunnel lining (second lining) Non-destructive testing technology system for defects such as empty and not dense.






    For the track board structure, a custom wide-area signal pickup device is specially customized to ensure the quality of the collected signals;

    The surface wave method is used to detect cracks, which is less affected by steel bars, moisture, and crack surfaces;

    Based on the classic FFT spectrum analysis method, the MEM spectrum analysis method is introduced for more diverse and smarter analysis methods.


     Achievements and technical characteristics



    Test object: CRTS-Ⅲ track board

    Test content: track slab voiding, crack depth, track slab concrete damage


    Test items



    1. "Non-destructive Testing Rules for Railway Tunnel Lining Quality" (TB 10223-2004)

    2. "High-quality Railway Tunnel Construction Quality Acceptance Standard" (TB 10753-2010)


    According to the standard

     Track plate void detection—shock echo method (IE method)

    The track board vacancy detection adopts the impact echo method (IE method), and the collection diagram is as above. The elastic wave signal is continuously excited along the surface of the track plate, and the signal will reflect when it encounters loose media such as voids and voids. By extracting the abnormal reflection signal and performing corresponding processing, the position and depth of the void can be identified

     Test principle and method


     Instrument selection


    Ballastless track multi-function non-destructive

    tester (type III)  

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    1 ★Provide database management services, can be docked with BIM system to achieve the visualization of test results model; with the database, can be linked to test results cloud AI (artificial intelligence) analysis
    2 ★Host protection level:IP66
    3 ★operating system:windows
    4 ★Waveform noise and signal processing technology: eliminating residual excitation signal; integration processing, average processing, moving smoothing、BPF、EMD
    5 ★Spectrum analysis:FFT、MEM
    6 ★Number of channels: 2 channels (using VMC technology to expand to multiple channels), triggering channels and receiving channels are interchangeable
    7 ★Test method for voids (seams) of track slab: IE plane imaging
    8 ★IE test coupling: high damping sensor support
    9 Platform: three Defense Integration Platform
    10 Effective testing range of concrete crack depth:0.01-0.3m
    11 Testing method for concrete crack depth: phase inversion method
    12 Testing method for concrete material: single side propagation method
    13 Data acquisition: support for touch and wireless dual mode operation; support for single and continuous dual mode sampling
    14 Support GPS positioning
    15 working temperature:-10~45℃     
    16 Sampling accuracy: floating point interpolation is compensated to 24 bits
    17 Maximum acquisition frequency: 500KHz, adjustable  
    18 Maximum collection points: 20000, adjustable
    19 Maximum / minimum voltage can be displayed:10V/0.0001V
    20 Display: large screen, LCD     
    21 Graphics processing: isoline, shade map, fast planar imaging(QPG)
    22 The same screen indicates the maximum waveform number: 300 (waveform acquisition point 2048, sampling interval 2us)


    Shock trolley


    Prototype Inspection of a Type II Track Plate in Shanghai

    On-site Verification and Application of the First Stage of a High Speed in Beijing


    Construction Inspection of Type III Track Slab of a Passenger Dedicated Company in Beijing

    The First Inspection of Type III Track Slab for a Passenger Dedicated Company in Chengdu


    Detection of Type III Track First Parts of Chenggui Passenger Dedicated Company

    Construction Inspection of Type III Track Slab for a Passenger Dedicated Company in Jinan

    Field Application of Concrete Quality in HH Passenger Special Cast-in-place Belt


    Vacancy Testing of a High-speed Railway Track Plate in Beijing


    Verification of Indoor Track Plate Model of China Academy of Railway Sciences



    Device name
    Railway concrete structure scanner
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