DongSan I&E
Instrumentation and Health Monitoring of Infrastructures, Empowered by Seismic Techniques
Stiffness Profiling
Pavement Integrity
Deflection Measurements of Rails
Integrity of Concrete Slabs
Soil Sites
For surface Wave tests at soil and rock sites, the SASW method is available with two software for conventional SASW, or automated SASW tests.
- SASW Tests - WinSASW 4.4.1
- Automated SASW Tests - DrAdam 2.0
Pavements
Pavement integrity tests for stiffness and thickness, the ESR (Enhanced Resonance Search) technique is available with the following software.
- ESR Tests - piScanner 2.1
- Concrete core tests - ResAnalyzer 2.1
Rail Roads
Dynamic rail or sleeper deflections can be measured during train passing. Also stiffness of rock ballast can be evaluated.
- Rail/Sleeper Deflections - Vibrato 4.1
- Rock ballast stiffness - WinSASW 4.4.1
Other Infrastructures
Concrete slabs of CFRD (rockfill dams): Delamination from the unerlying rockfills, stiffness of concrete slabs can be evaluated.
- Concrete slab integrity of CFRD - qSCAN 2.0
- Stiffness of CFRD slabs- WinSASW 4.4.1
Pricing Plans
Choose a pricing plan that fits your needs. The details of the price are available through the email contact below.
- Individual
- WinSASW 4.4.1
- piScanner 2.1
- ResAnalyzer 2.1
- Vibrato 4.1
- DrAdam 2.0
- qSCAN 2.0
- Package
- Soil Package : [WinSASW + DrAdam]
- Pavement Package : [piScanner + ResAnalyzer + WinSASW ]
- Railroad Package : [Vibrato + WinSASW]
- Infrastructure Package : [qSCAN + WinSASW]
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SASW Method
- SH Joh, 1996, Advances in the data interpretation technique for Spectral-Analysis-of-Surface-Waves (SASW) measurements. The University of Texas at Austin.
- SH Joh, JA Vivar, H Akmal, 2023, Wavenumber unwrapping for the automated analysis of SASW measurements. Soil Dynamics and Earthquake Engineering.
Pavement Integrity Tests
- SH Joh, MR Cho, TH Kang, SA Kwon, JH Nam, 2008, Pavement integrity scanner to characterize modulus contrast between near-surface and deeper material in concrete pavements. Transportation Research Record.
- SH Joh, NA Rahman, K Magno, 2018, Pavement integrity assessed by leaky surface waves with wave group interpretation. Journal of Transportation Engineering, Part B.
Railroad Tests
- SH Joh, K Magno, SH Hwang, 2018, Dynamic deflection of a railroad sleeper from the coupled measurements of acceleration and strain. Sensors.
- JA Vivar, SH Joh, YT Choi, 2023. Characteristics of stiffness–damping relationships in ballasted tracks for health condition evaluation. International Journal of Rail Transportation
Other Infrastructures
- SH Joh, K Magno, JA Vivar, 2021, Damping ratio as an indicator of void space beneath the concrete face slab of rockfill dams. NDT & E International.
- SH Joh, DS Park, K Magno, JH Lee. 2019. Stress-based velocity correction for evaluating the shear-wave velocity of the earth core of a rockfill dam. Soil Dynamics and Earthquake Engineering.