Korea University · Dentistry
Professor Ji-Hwan Kim's research lab specializes in advanced materials and mechanical systems with a focus on structural performance, precision manufacturing, and intelligent sensing technologies. The lab investigates fiber-reinforced cementitious composites under complex loading conditions, explores high-accuracy digital and 3D-printed dental models for clinical applications, and develops robust estimation algorithms for vehicle dynamics—particularly road bank angle detection using low-cost sensors. The research integrates experimental mechanics, materials characterization, and control theory to solve real-world engineering challenges with enhanced reliability and efficiency.
Figures are computed from collected data and may differ slightly.
Digital models had smaller root mean square values of trueness of the complete arch and preparations than stone models. However, the accuracy of the complete arch and trueness of the preparations of 3D printed models were inferior to those of the other groups.
Although the dental replica models using photopolymer materials did not show better trueness than the conventional stone models, there was no significant difference between the SLA and the stone models. Concerning precision, dental replica models using photopolymer materials presented better results than that of the conventional stone models. In sum, dental replica models using photopolymer materials showed sufficient accuracy for clinical use.
The flexural resistance of fiber reinforced cementitious composites (FRCCs) under biaxial condition was investigated by using two different types of biaxial bending test methods: the biaxial flexural test (BFT) and the centrally loaded round panel test (RPT). The flexural responses of FRCCs under biaxial condition were then compared with those of FRCCs under uniaxial condition; i.e. four-points bending test (4PBT). The test results, including the equivalent biaxial strength and normalized energy
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