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NDT technology


Impact-echo method (normalized impact-echo method)

1. Detection of position and depth of honeycomb voids or delaminated cracks

2. determination of depth and position of cracks on concrete surface

3. detection of structural repair quality

4. detection of rebar gripping force of newly poured concrete structures after earthquake

5. detection of interfacial bonding of layered structures steel

6. reinforcement/prestressed steel strand corrosion damage detection

7. dynamic elastic modulus detection of drilling core




Full cover Ground Penetrated Radar (GPR) including antenna (100MHz, 250MHz, 500MHz, 1GHz, 2.3 GHz)

1. Inspection of internal defects of structures

2. Inspection of pipeline position

3. inspection of pavement thickness and delamination condition,

4. inspection of position of rebar, pre-stressed tendon duct, and fault



Surface wave method (with one impactor and one receiver)

1. Assessment of damage depth and bond condition of reinforced concrete member after fire using the dispersive characteristics of Rayleigh wave group velocity

2. Fast assessment of internal defects and underneath void for concrete plate using the spectrogram.

3. Assessment of deteriorated steel plate strengthened RC structure



Microwave Interferometer

Bridges or wind turbines

1. modal shape and frequency analysis 2. Simultaneous dynamic displacement measurements at multiple positions



Infrared thermography

1. Building tile peeling

2. Shallow crack detection

3. tunnel lining damage and water seepage detection.



Foundation pile testing equipment

1. Depth inspection of foundation piles

2. internal defects and integrity assessment of foundation piles



Ultrasonic testing equipment

1. Structural pulse wave velocity measurement

2. prestressing steel strand damage detection

3. structural thickness and strength estimation

4. surface crack depth detection
Rebar corrosion potential Measure the corrosion possibility of steel reinforcement in concrete  

Ground resistance equipment

Depth of foundation piles, soil-rock flow investigation, investigation of unknown buried objects, faults, archaeology, etc.  
Coating thickness detector Steel bridge coating thickness  

Ground-based Lidar Scanner

1. Build a 3D point cloud model

2. The produced point cloud can be used for digital preservation of monuments, deformation monitoring and investigation of tunnels or collapsed areas

Unmanned aerial vehicle UAV

Quickly inspect the inconvenient places for personnel and perform photogrammetry calculations with aerial photos, and quickly obtain full-frame orthophotos, numerical surface models (DSM), numerical elevation models (DEM), 3D point cloud model data, and triangular meshes. Real-life models to make up for high-floor locations that cannot be scanned by ground-based laser scanners.