Topic:
Vibration based (진동 기반)
Electromagnetic based (전자기파 기반)
Seismic wave based (탄성파 기반)
Others
1. Vibration based (pavement NDT)
Rolling Dynamic Deflectometer (RDD)
Falling Weight Deflectometer (FWD) in pavement system
2. Electromagnetic (for cavity detection)
3. Seismic wave based
MASW (Multichannel Analysis of Surface Waves )
In-hole/ cross-hole test setup
Direct arrival & free-free resonant column (FFRC) tests