[50] Kim, D.Y., Jeong, C.J., Kim, S.S., Lee. G.W., Diaz, M.B., Kim, K.Y. (2025) Automated image classification of minerals using convolutional neural networks, Earth Science Informatics, 18(546), DOI=10.1007/s12145-025-02048-9

[49] Lim, M.S., Ryu, K.B., Jung, J.H., Bang, S.H., Diaz, M.B., Kim, K.Y. (2025) Influence of salinity on the gelation and microstructure of cement–sodium silicate grout, Tunnelling and Underground Space Technology, 168, 107105

[48] Diaz, M.B., Ryu, K.B., Kim, T., Kim, K.Y. (2024). Performance Evaluation of Natural Crushed Rock Filters in Deep Wells for Groundwater Control during Tunnel Construction. Geosciences Journal. 29: 759-770. DOI=10.1007/s12303-025-00043-2

[47] Baek, S., Lee, B., Kim, K.Y., Kim, G., Yun, T.S. (2024). Linear and Nonlinear ultrasound parameters attributed to anisotropy in granite. Scientific Reports. 14: 26986. DOI=10.1038/s41598-024-78367-6

[46] Diaz, M.B., Kim, K.Y., Kim, H., Yun, T.S. (2024). Roughness characterization of hydraulically induced fractures in anisotropic granite. Rock Mechanics and Rock Engineering. 57: 7691-7702. DOI=10.1007/s00603-024-03890-x

[45] Park, J., Kim, Y., Kim, S.S., Kim, K.Y., Yun, T.S. (2024). Effect of injection rate and viscosity on stimulated fracture in granite: Extraction of fracture by convolutional neural network and morphological analysis. Rock Mechanics and Rock Engineering. 57. 2159-2174. DOI = 10.1007/s00603-023-03678-5

[44] Seo, W., Lee, G.W., Kim, K.Y., Yun, T.S. (2024). Predicting rate of penetration (ROP) based on a deep learning approach: A case study of an enhanced geothermal system in Pohang, South Korea. Earth Science Informatics. 17. 813-824. DOI = 10.1007/s12145-023-01149-7

[43] Farkas, M.P., Hofmann, H., Zimmermann, G., Zang, A., Zhuang, L., Kim, K.Y. (2023). Numerical investigation of laboratory hydraulic fracturing tests in Pocheon granite. Acta Geotechnica. 18. 2011-2038. DOI=10.1007/s11440-022-01648-9

[42] Diaz, M.B., Kim, S.S., Lee, G.W., Kim. K.Y., Lee, C., Kim, J.S., Kim, M. (2023). Physio-mechanical and X-ray CT characterization of bentonite as sealing material in geological radioactive waste disposal. Geomechanics and Engineering, 34(4). 449-459. DOI =10.12989/gae.2023.34.4.449

[41] Lim, S.Y., Youm, K.S., Kim. K.Y., Byun, Y.H., Ju, Y.K., Yun, T.S. (2023). Observation of reinforcing fibers in concrete upon bending failure by X-ray computed tomographic imaging. Computers and Concrete. 31(5). 433-442. DOI = 10.12989/cac.2023.31.5.433

[40] Kim, Y., Lim, S.Y., Kim, K.Y., Yun, T.S. (2023) Prediction of compressional wave velocity of cement-reinforced soil from core images using a convolutional neural network regression model, Computers and Geotechnics, 153, 105067.

[39] Seol, H., Won, D., Jang, J., Kim, K.Y., Yun, T.S. (2022). Ground Collapse in EPB shield TBM site: A case study of railway tunnels in the deltaic region near Nak-Dong River in Korea. Tunnelling and Underground Space Technology. 120. 104274. DOI = 10.1016/j.tust.2021.104274

[38] Zang, A., Zimmermann, G., Hofmann, H., Niemz, P., Kim, K.Y., Diaz, M., Zhuang, L., Yoon, J.S. (2021) Relaxation damage control via fatigue-hydraulic fracturing in granitic rock as inferred from laboratory-, mine-, and field-scale experiments, Scientific Reports, 6780.

[37] Jung. S., Diaz, M.B., Kim, K.Y. (2021) Fatigue behavior of granite subjected to cyclic hydraulic fracturing and observations on pressure for fracture growth, Rock Mechanics and Rock Engineering, doi.org/10.1007/s00603-021-02383-5

[36] Kim, H., Diaz, M.B., Kim, J.Y., Jung Y.-B., Kim, K.Y. (2020) Stress Estimation through Deep Rock Core Diametrical Deformation and Joint Roughness Assessment Using X-ray CT Imaging, Sensors, 20(23), 6802

[35] Diaz, M.B., Kim, K.Y., Jung. S., (2020) Effect of frequency during cyclic hydraulic fracturing and the process of fracture development in laboratory experiments of granite, Int. Journal of Rock Mechanics and Mining Sciences, 134, 104474

[34] Yang, E., Yun, T.S., Kim, K.Y., Moon, S.W., Seo, Y.-S. (2020) Estimation of the structural and geomechanical anisotropy in fault gouges using 3D μ-CT images, Sensors, 20(17), 4706

[33] Park, S., Kim, K.-I., Xie, L., Yoo, H., Min, K.-B., Kim, M., Yoon, B., Kim, K.Y., Zimmermann, G., Guinot, F., Meier, P., (2020) Observations and analyses of the first two hydraulic stimulations in the Pohang geothermal development site, South Korea, Geothermics, 88, 101905

[32] Zhuang, L., Jung, S.G., Diaz, M., Kim, K.Y., Hofmann, H., Min, K.-B., Zang, A., Stephansson, O., Zimmermann, G., Yoon, J.S., (2020) Laboratory True Triaxial Hydraulic Fracturing of Granite Under Six Fluid Injection Schemes and Grain-Scale Fracture Observations, Rock Mechanics and Rock Engineering, https://doi.org/10.1007/s00603-020-02170-8

[31] Diaz, M.B., Kim, K.Y. (2020) Improving rate of penetration prediction by combining data from an adjacent well in a geothermal project, Renewable Energy, 155, 1394-1400

[30] Zhuang, L., Kim, K.Y., Diaz, M., Yeom, S. (2020) Evaluation of water saturation effect on mechanical properties and hydraulic fracturing behavior of granite, Int. Journal of Rock Mechanics and Mining Sciences, 130, 104321

[29] Kim, K, Yun, T.S., Jang, J.W., Kim, K.Y., (2020) Characterization of orthotropic nature of cleavage planes in granite rock, Engineering Geology, 265, 105432.

[28] Zhuang, L., Kim, K.Y., Jung, S.G., Diaz, M., Min, K.-B., Zang, A., Zimmermann, G., Yoon, J.S., Hofmann, H. (2019) Cyclic hydraulic fracturing of Pocheon granite cores and its impact on breakdown pressure, acoustic emission amplitudes and injectivity, Int. Journal of Rock Mechanics and Mining Sciences, 122, 104065

[27] Diaz, M., Kim, K. Y., Shin, H. S., Zhuang, L. (2019) Predicting rate of penetration during drilling of deep geothermal well in Korea using artificial neural networks and real-time data collection, Journal of Natural Gas Science and Engineering, 67, 252-532

[26] Baek, S.H., Hong, J. W., Kim, K. Y., Yeom, S., Kwon, T.-H. (2019) X-ray computed microtomography imaging of abiotic carbonate precipitation in porous media from a supersaturated solution: Insights into effect of CO2 mineral trapping on permeability, Water Resources Research, https://doi.org/10.1029/2018WR023578

[25] Hofmann, H., Zimmermann. G., Farkas, M., Huenges, E., Zang, A., Leonhardt, M., Kwiatek, G., Martinez-Garzon, P., Bohnhoff, M., Min, K.-B., Fokker, P., Westaway, R., Bethmann, F., Meier, P., Yoon, K., Choi, J. W., Lee, T. J., Kim, K. Y. (2019) First field application of cyclic soft stimulation at the Pohang Enhanced Geothermal System site in Korea, Geophysical Journal International, 217, 926-949

[24] Kwon, S., Xie, L., Park, S., Kim, K.-I., Kim, H., Min, K.-B., Kim, K.Y., Zhuang, L., Choi, J.-W., Yoon, K., Yoon, W.S., Lee, T.J., Song, Y. (2019) Characterization of 4.2 km deep fractured granodiorite cores in Pohang geothermal reservoir, Korea, Rock Mechanics and Rock Engineering, 52, 771-782

[23] Zang, A., Zimmermann, G., Hofmann, H., Stephansson, O., Min, K.-B., Kim, K.Y. (2019) How to reduce fluid-injection induced seismicity, Rock Mechanics and Rock Engineering, 52, 475-493

[22] Zhuang, L., Kim, K.Y., Jung, S.G., Diaz, M., Min, K.-B. (2018) Effect of water infiltration, injection rate and anisotropy on hydraulic fracturing behavior of granite, Rock Mechanics and Rock Engineering, 52, 575-589

[21] Kim, K.-I., Min, K.-B., Kim, K.Y., Choi, J.-W., Yoon, K., Yoon, W.S., Yoon, B., Lee, T.J., Song, Y. (2018) Protocol for induced microseismicity in the first enhanced geothermal systems project in Pohang, Korea, Renewable and Sustainable Energy Review, 91, 1182-1191

[20] Diaz, M., Kim, K.Y., Kang, T.H., Shin, H.S. (2018) Drilling data from an enhanced geothermal project and its pre-processing for ROP forecasting improvement, Geothermics, 72, 348-357

[19] Lee, S.S., Kim, K.Y., Seo, J.W. (2018) Development of a trip time for bit exchange simulator for drilling time estimation, Geothermics, 71, 24-33

[18] Park, S., Kim, K.-I., Kwon, S., Yoo, H., Xie, L., Min, K.-B., Kim, K.Y. (2018) Development of a hydraulic stimulation simulator toolbox for enhanced geothermal system design, Renewable Energy, 118, 879-895

[17] Diaz, M., Kim, K.Y., Zhuang, L., Yeom, S., Park, S., Min, K.-B. (2017) Surface Roughness Characterization of Open and Closed Rock Joints in Deep Cores using X-ray Computed Tomography, International Journal of Rock Mechanics and Mining Sciences, 98, 10-19

[16] Suh, H.S., Kang, D.H., Jang, J., Kim, K.Y., Yun, T.S. (2017) Capillary pressure at irregularly shaped pore throat, Advances in Water Resources, 110, 51-58

[15] Ha, S.J., Yun T.S.., and Kim, K.Y. (2017) Experimental Study of Pumping Rate Effect on Hydraulic Fracturing of Cement Paste and Mortar, Rock Mechanics and Rock Engineering, 50, 3115-3119

[14] Seo, D., Yun, T.S., Kim, K.Y., Youm, K.S. (2017) Time-dependent drainage capacity and runoff of pervious block subjected to repeated rainfall simulation, Journal of Materials in Civil Engineering, 29(5)

[13] Suh, H.S., Kim, K.Y., Lee, J. and Yun, T.S. (2017) Quantification of bulk form and angularity of particle with correlation of shear strength and packing density in sands, Engineering Geology, 220, 256-265

[12] Yoon, C.W., Seo, J.W., Lee, S.S, Park, J.S., Kim, K.Y. (2017) Study on the slip resistance of embo-spray coating of urethane-based floor material, KSCE Journal of Civil Engineering, 21(1), 76-84

[11] Kang, D.H., Yun T.S., Kim, K.Y., and Jang, J. (2016) Effect of hydrate nucleation mechanisms and capillarity on permeability reduction in granular media, Geophysical Research Letters, 43(17), 9018-9025

[10] Kim, K.Y., Suh, H.S., Yun T.S., Moon, S.-W., and Seo, Y.-S. (2016) Effect of particle shape on the shear strength of fault gauge, Geosciences Journal, 20(3), 351-359

[9] Kim, K.Y., Zhuang, L., Yang, H., Kim, H., Min, K.-B. (2016) Strength anisotropy of berea sandstone: results of x-ray computed tomography, compression tests, and discrete modeling, Rock Mechanics and Rock Engineering, 49(4), 1201-1210

[8] Shin, H.S., Kim, K.Y., Pande, G.N. (2015) On computation of strain-dependent permeability of rocks and rock-like porous media, Numerical and Analytical Methods in Geomechanics, 39(8), 821-832

[7] Kim, D.H., Yang, H.J., Kim, K.Y., and Yun T.S. (2015) Experimental investigation of evaporation and drainage in wettable and water-repellent sands, Sustainability, 7(5), 5646-5663

[6] Chang, C., Jo, Y., Oh, Y., Lee, T.J., Kim, K.Y., (2014) Hydraulic Fracturing In Situ Stress Estimations in a Potential Geothermal Site, Seokmo Island, South Korea, Rock Mechanics and Rock Engineering, 47(5), 1793-1808

[5] Um, H., Lee, K., Kim, K.Y., Shin, J., Chung. Y. (2014) Effect of carbon content of ferromanganese alloy on corrosion behavior of MgO-C refractory, Ironmaking & Steelmaking, 41(1), 31-37

[4] Yun, T.S., Jeong, Y.J., Kim, K.Y., and Min, K.-B. (2013) Evaluation of rock anisotropy using 3D X-ray computed tomography, Engineering Geology, 163, 11-19

[3] Kim, K.Y., Yun, T.S., and Park, K.P. (2013) Evaluation of pore structure and cracking in cement paste exposed to elevated temperatures by X-ray computed tomography, Cement and Concrete Research, 50, 34-40.

[2] Kim, K.Y., Yun, T.S., Choo, J., Kang, D.H. and Shin, H.S.(2012) Determination of air void parameters of hardened cement paste using X-ray computed tomography, Construction and Building Materials. 37, 93-101

[1] Yun, T.S., Kim, K.Y., Choo, J., and Kang, D.H. (2012) Quantifying the distribution of paste-void spacing of hardened cement paste using X-ray computed tomography, Materials Characterization, 73, 137-143