Dr Jungdoung Yu
Visiting Scholar (Research Professor at Korea University)
Office: 510 Davis Hall
Email: jungdoung ‘at’ gmail ‘dot’ com.
Jungdoung Yu is currently a visiting scholar, working with Prof. Kenichi Soga, in Department of Civil and Environmental Engineering at UC Berkeley. He received his B.Eng. (2007), M.Eng(2009), and D.Eng(2016) in Civil Engineering from Korea University. His research has focused on the application of smart sensors for evaluating the integrity of infrastructures. His recent research interest is the sound classification using deep learning, distributed acoustic sensing (DAS) for MASW analysis, and structural health monitoring.
Research Interests:
– Structure health monitoring: rock bolt, soil nail, pipe roof support system, pile foundation, offshore structure, bridge scouring, cavity detection
– Ground investigation: liquefaction, soil dynamic properties, soil electrical properties
– Sound classification with deep learning: earthquakes, marine mammals, ship
– Distributed fiber optic sensing (DAS): multichannel analysis of surface Waves (MASW) analysis
Figure 1. Defect detection of pile using electromagnetic waves.
Figure 2. Rock bolt integrity evaluating using ultrasonic guided waves.
Figure 3. Offshore sound detection using hydrophone and classification with deep learning.
Peer-Reviewed Journal Articles:
[1] In-Mo Lee, Shin-In Han, Hyun-Jin Kim, Jung-Doung Yu, Bok-Ki Min, Jong-Sub Lee* (2012) Evaluation of Rock Bolt Integrity Using Fourier and Wavelet Transforms. Tunnelling and Underground Space Technology, Elsevier, Vol. 28, 304-314.
[2] Jung-Doung Yu, Myoung-Ho Bae, In-Mo Lee, and Jong-Sub Lee* (2013). Nongrouted Ratio Evaluation of Rock Bolts by Reflection of Guided Ultrasonic Waves. Journal of Geotechnical and Geoenvironmental Engineering, ASCE, Vol. 139, No. 2, 298-307.
[3] Jung-Doung Yu, Young-Ho Hong, Yong-Hoon Byun, Nag-Young Kim, and Jong-Sub Lee* (2016). Non-Destructive Evaluation of the Grouted Ratio of a Pipe Roof Support System in Tunneling. Tunnelling and Underground Space Technology, Elsevier, Vol. 56, 1-11.
[4] Jung-Doung Yu, Ki-Hong Kim, and Jong-Sub Lee* (2018). Nondestructive Health Monitoring of Soil Nails Using Electromagnetic Waves. Canadian Geotechnical Journal, Vol. 55, No. 1, 79-89.
[5] Jung-Doung Yu, Nag-Young Kim, and Jong-Sub Lee* (2018). Nondestructive Integrity Evaluation of Soil Nails Using Longitudinal Waves. Journal of Geotechnical and Geoenvironmental Engineering, ASCE, Vol. 144, No. 11, 04018080-1-04018080-14.
[6] Jong-Sub Lee, Jung Uk Song, Won-Taek Hong, and Jung-Doung Yu* (2018). Application of Time Domain Reflectometer for Detecting Necking Defects in Bored Piles. NDT&E International, Vol. 100, 132-141.
[7] Jong-Sub Lee and Jung-Doung Yu * (2019). Non-destructive Method for Evaluating Grouted Ratio of Soil Nail Using Electromagnetic Wave. Journal of Nondestructive Evaluation, Vol. 38, No. 2, 1-15.
[8] Jung-Doung Yu, Yong-Hoon Byun, and Jong-Sub Lee* (2019). Experimental and Numerical Studies on Group Velocity of Ultrasonic Guided Waves in Rock Bolts with Different Grouted Ratios. Computers and Geotechnics, Vol. 114, 1-14.
[9] Won-Taek Hong, Jung-Doung Yu, Sang Yeob Kim, and Jong-Sub Lee* (2019). Dynamic Cone Penetrometer Incorporated with Time Domain Reflectometry (TDR) Sensors for the Evaluation of Water Contents in Sandy Soils. Sensors, Vol. 19, No. 18, 3841.
[10] Jung-Doung Yu, Jong-Sub Lee, and Hyung-Koo Yoon* (2020). Circular Time-Domain Reflectometry System for Monitoring Bridge Scour Depth. Marine Georesources & Geotechnology, Vol. 38, No. 3, 312-321.
[11] Jung-Doung Yu and Jong-Sub Lee* (2020). Smart Sensing Using Electromagnetic Waves for Inspection of Defects in Rock Bolts. Sensors, Vol. 20, No. 10, 2821.
[12] Jung-Doung Yu, Jong-Sub Lee, Sungyong Park, Sukhyun Chang, Bibek Tamang, and Yongseong Kim* (2020). Performance Evaluation of GFRP Rock Bolt Sensor for Rock Slope Monitoring by Double Shear Test. Advances in Civil Engineering, Vol. 2020, ID. 8870698.
[13] Jong-Sub Lee, Jung-Doung Yu, Kyungsoo Han, and Sang Yeob Kim* (2020). Strength Characteristics of Sand–Silt Mixtures Subjected to Cyclic Freezing-Thawing-Repetitive Loading. Sensors, Vol. 20, No. 18, 5381.
[14] Jung-Doung Yu, Sang Yeob Kim, and Jong-Sub Lee* (2020). Variations in Velocity and Sensitivity of Electromagnetic Waves in Transmission Lines Configured in Model Piles with Necking Defects Containing Soils. Sensors, Vol. 20, No. 22, 6541.
[15] Dong-Ju Kim, Jung-Doung Yu, and Yong-Hoon Byun* (2020). Horizontally Elongated Time Domain Reflectometry System for Evaluation of Soil Moisture Distribution. Sensors, Vol. 20, No. 23, 6834.
[16] Dong-Ju Kim, Jung-Doung Yu, Yong-Hoon Byun* (2021). Piezoelectric Ring Bender for Characterization of Shear waves in Compacted Sandy soils. Sensors, Vol. 21, No. 4, 1226.
[17] Seonghun Kang, Jung-Doung Yu, Won-Taek Hong, and Jong-Sub Lee * (2021). Estimation of Cavities beneath Plate Structures Using a Microphone: Laboratory Model Tests. Sensors, Vol. 21, No. 9, 2941.
[18] Jung-Doung Yu, Jong-Sub Lee, Hyung-Koo Yoon* (2021). Effects of Rock Weathering on Guided Wave Propagation in Rock Bolts. Tunnelling and Underground Space Technology, Vol. 115, 104069.
[19] Jung-Doung Yu, Jong-Sub Lee, and Hyunki Kim* (2021). A hybrid Nondestructive Testing Method for Detecting Cavities Behind The Retaining Wall. Smart Structures and Systems, Vol. 28, No. 4.