Korea Advanced Institute of Science and Technology · Engineering
Professor Hyo-Gyoung Kwak's research lab specializes in nondestructive evaluation and mechanical behavior of construction materials, with a focus on ultrasonic testing and fresh concrete consolidation. The lab develops advanced experimental and numerical techniques to assess material properties, durability, and structural performance in concrete and mortar systems. Key research directions include wave attenuation measurement using ultrasonic methods, plastic settlement behavior of fresh concrete, and the influence of mix proportions, reinforcement geometry, and cover depth on material behavior. The lab integrates noncontact measurement technologies and computational modeling to improve structural safety and performance prediction.
Figures are computed from collected data and may differ slightly.
Nondestructive testing (NDT) that uses ultrasonic waves is a reliable experimental technique for characterisation of materials in existing concrete structures and for safety evaluations of these structures. The wave velocity is related to the stiffness of material and the wave attenuation can be used to evaluate damaged concrete structures. This paper proposes an experimental technique to quantitatively measure the wave attenuation using contact ultrasonic transducer for NDT. The proposed techni
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