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XEDITION

Publication
Rotating Machinery Innovation, KIST

Publications/Conferences

2018

1
Bokseong Choe, Jeonkook Lee, Doyoung Jeon, Yongbok Lee "Experimental study on dynamic behavior of ball bearing cage in cryogenic environments, Part II: Effects of cage mass imbalance;, Mechanical Systems and Signal Processing 2018 (June 18 2018)
2
Bokseong Choe, Jeonkook Lee, Doyoung Jeon, Yongbok Lee "Experimental study on dynamic behavior of ball bearing cage cryogenic environments, Part I: Effects of cage guidance and pocket clearances (June 11 2018)
3
Yong-Bok Lee, Doyoung Jeon, Bokseong Choe, Wonil Kwak "Numerical Study of Cage Dynamics Focused on Hydrodynamic Effects of Guidance Land Clearances for Different Ball-Pocket Clearances in Cryogenic Environments;, Journal of Engineering for Gas Turbines and Power 2018 (APRIL 2018)

2017

1
Yong-Bok Lee, Wonil Kwak, Bokseong Choe, "Tribo-test of high speed ball bearings under the cryogenic environment for turbo pump of liquid rocket engine;, World Tribology Congress 2017 (September 17-22 2017)
2
Wonil Kwak, Jeonkook Lee, Woosub Lee, and Yong-Bok Lee, "Tribological Behavior of Space Rover Gear Train under the Ultra High Vacuum", 14th International Conference on Ubiquitous Robots and Ambient Intelligence (June 2017)
3
Jaeseung Byun, Dymtro Timchenko, Yong Bok Lee, “Investigation on High Temperature Steam Effect of Brush Seals for Steam Turbine”, 2017 STLE Annual Meeting & Exhibition, May 21-25,2017
4
Bok Seong Choe, Jaeseung Byun, Jeon Kook Lee, Yong Bok Lee, “Experimental study of cage imbalance and wear in deep groove ball bearing under cryogenic environments”, 2017 STLE Annual Meeting & Exhibition, May 21-25,2017
5
Bok Seong Choe, Jeon Kook Lee, DoYoung Jeon, Yong Bok Lee, “Numerical study of cage dynamics focused on hydrodynamic effects of guidance land clearances for different ball-pocket clearances in cryogenic environments”, ASME Turbo Expo 2017, GT2017-64151
6
Dmytro Timchenko, Jaeseung Byun, Yong-Bok Lee, "Experimental Clearance Analysis of Steam Turbine Brush Seal", ITS-IFToMM 2017 & K-TIS 2017
7
Yong-Bok Lee, Wonil Kwak, Bokseong Choe, Evaluation of lead coated ball bearing using frequency analysis on extreme conditions;, 24th International Congress on Sound Vibration, July 23-27 2017, London
8
Bokseong Choe, Jeon Kook Lee, Do young Jun, Yong-Bok Lee, Numerical study of cage dynamics focused on hydrodynamic effects of guidance land clearances for different ball-pocket clearances in cryogenic environments;, J. Eng. Gas Turbines Power, September 2017
9
Bokseong Choe, Wonil Kwak, Doyoung Jeon, Yong-Bok Lee, Dynamic behavior of cage ball bearing in cryogenic environments, Part II: Effects of cage mass imbalance;, Mech. Syst. Signal Preocess, (Under review)
10
Bokseong Choe, Jeon Kook Lee, Doyoung Jeon, Yong-Bok Lee, Dynamic behavior of cage ball bearing in cryogenic environments, Part I: Effects of cage guidance and pocket clearances;, Mech. Syst. Signal Preocess, (Under review)

2016

1
Jaeseung Byun, Dmytro Timchenko, and Yongbok Lee, "Identification of modal parameters of the steam turbine brush seal", 7th International Symposium on Fluid Machinery and Fluids Engineering conference (Oct 2016)
2
Sena Jeong, Jungwan Kim, Doyoung Jeon and Yong Bok Lee, “Rigid Mode Vibration Control and Dynamic Behavior of Hybrid Foil-Magnetic Bearing (HFMB) Turbo Blower”, ASME Turbo Expo 2016, GT2016-57712
3
Eojin Kim, Yong Sik Hah, Seung-Jae Moon, Yong-Bok Lee, Rotordynamic behavior of reaction-type steam turbine system, 7th International Symposium on Fluid Machinery and Fluids Engineering
4
Sena Jeong, Jungwan Kim, Yong Bok Lee, Stabilizing unstable vibration for oil-free turbo compressor supported by hybrid foil-magnetic bearing, 7th International Symposium on Fluid Machinery and Fluids Engineering
5
Jung-wan Kim, Won-il Kwak, Hyung-ho Kim, Min-Woo Kang, Sang-ho Suh, Yong-bok Lee, The analysis of the vibration considering the hydrodynamic force in Francis turbine generator, 7th International Symposium on Fluid Machinery and Fluids Engineering
6
Sena Jeong, Jungwan Kim, Doyoung Jeon and Yong Bok Lee, “Rigid Mode Vibration Control and Dynamic Behavior of Hybrid Foil-Magnetic Bearing (HFMB) Turbo Blower”, Journal of Engineering for Gas Turbines and Power(SCI, Accepted)
7

변재승, 변삼섭, Dmytro Timchenko, 이용복, " 스팀조건을 갖는 발전용 실의 성능 실험적 연구" 2016 한국유체기계학회 하계 학술대회 

2015

1
이용복, 최복성, 곽원일, 김초희, 이전국, "75톤급 터보펌프의 트리보 요소(베어링, 실) 기술 및 개발 현황(Development Current Situation of Tribo Elements for 75 ton Class High Pressure Turbopum)", 제 14회 우주발사체기술 심포지움, 2015. 2. 26
2
김초희, 최복성, 곽원일, 이용복, 이전국 "액체로켓엔진용 극저온 터보펌프 볼 베어링 고체윤활제의 마모특성", 제 14회 우주발사체기술 심포지움, 2015. 2. 26
3
"Dynamic Performance Characteristics of Floating-Ring Bearings with Varied Oil-Injection Swirl-Control Angles", Daniel, Changho Kim and Yongbok Lee, Journal of dynamic systems, measurement, and control, Vol 137. No.2 2015
4
"Behavior Analysis of Controllable Electrorheology Fluid Plain Journal Bearings” and Yongbok Lee, June 2015, Journal of dynamic systems, measurement, and control, Vol 137 No.2 pp. 610
5
"Vibration Control of High-Speed Rotor Supported by Hybrid Foil-magnetic Bearing with Sudden Imbalance", Sena Jeong and YongBok Lee, Journal of vibration and control
6
[United States Patent]Air Foil Bearing Having Pressure Dam, 한국과학기술연구원, 이용복, 정세나, 최복성, 등록번호 : 9004765, 2015. 04. 14
7
"Rotordynamic Behavior of 225 kW (330 HP) Class PMS Motor-Generator System Supported by Gas Foil Bearings",Feb. 2015, Choe, B. S., Kim, T. H., Kim, and Lee, Y. B., 2015, ASME Journal of Engineering for Gas Turbines and Power, 137(9),p. 092505.
8
"Dynamic Performance Characteristics of Floating-Ring Bearings with Varied Oil-Injection Swirl-Control", Daniel Tamu, Changho Kim and Yongbok Lee. , Feb,. 2015, Journal of dynamic systems, measurement, and control, Vol 137 No.2 pp. 610
9
"Study on the dynamic characteristics for vibration control of rigid rotor supported by hybrid foil-magnetic bearing", April 2015, NOVEM
10
[Patent] 섬유를 활용한 가스 포일베어링.(한국출원, K07367) 김창호, 백동현, 이용복

2014

1
김어진, 정세나, 이용복, 2014, "초소형 ORC용 터보 제너레이터의 구동 안정성에 관한 연구", 제 8회 한국유체공학학술대회(ORC 특별세션), 2014
2
Bok Seong Choe, Tae Ho Kim, Chang Ho Kim, and Yong Bok Lee, "RotordynamicBehavior of 225 kW (300HP) Class PMS Motor-Generator System Supported by Gas Foil Bearings", ASME Turbo Expo 2014, Dusseldorf, Germany, 2014
3
Yong-Bok Lee, Kyoung-wook Kim, Sol-Ji Ryu, and Jin TaekChung, "Leakage Performance and RotordynamicCharacteristics of Bump Floating Ring Seals for Turbopump", ASME Turbo Expo 2014, Dusseldorf, Germany, 2014
4
Bok Seong Choe, Sena Jeong, Eo Jin Kim, Yong Bok Lee, "Parametric Study of Dynamic Analysis Focusing on the Foil Structure of a Gas Foil Journal Bearing", 9th IFToMMInternational Conference on Rotor Dynamics 2014, Milan, Italy, 2014
5
Sena Jeong, Bok Seong Choe, Yong Bok Lee, "RotordynamicBehavior and Performance of Controllable Hybrid Foil-Magnetic Bearing", 9th IFToMMInternational Conference on Rotor Dynamics 2014, Milan, Italy, 2014
6
Sol Ji Ryu, Bok Seong Choe, Jeon kook Lee, Yong Bok Lee, "Correlation between Friction Coefficient and Sound Characteristics for Cage Instability of Cryogenic Deep Groove Ball Bearing", 9th IFToMMInternational Conference on Rotor Dynamics 2014, Milan, Italy, 2014
7
Bon Jin Koo, Chang Ho Kim, Jong Seong Lee, Tae Ho Kim, Kyu Ho Sim, Maryna Ienina, "Analysis and Experimental Test of a 200 kW Oil‐ free Micro Gas Turbine Simulator", 9th IFToMMInternational Conference on Rotor Dynamics 2014, Milan, Italy, 2014
8
최복성, 류솔지, 김초희, 이전국, 이용복, "극한 환경 터보텀프용 볼 베어링의 내구 수명 평가", 2014년도 한국윤할학회 제59회 추계학술대회(oral session), 2014
9
류솔지, 최복성, 이전국, 이용복, "-180도 환경에서 운용되는 케이지 형상에 따른 터보펌프 볼 베어링의 마찰마모 평가", 2014년도 한국윤할학회 제59회 추계학술대회(poster session)

2013

1
Lee, Y. B., Kwon, S. B., Kim, T. H., Sim, K. H., 2013, “Feasibility Study of an Oil-Free Turbocharger Supported on Gas Foil Bearings Via On-Road Tests of a Two-Liter Class Diesel Vehicle,” ASME Journal of Engineering for Gas Turbines and Power, Vol.135, pp.052701, 2013
2
Sim, K. H., Lee, Y. B., Kim, T. H., 2013, “Effects of Mechanical Preload and Bearing Clearance on Rotordynamic Performance of Lobed Gas Foil Bearings for Oil-Free Turbochargers,” TRIBOLOGY TRANSACTIONS, Vol.56, No.2, pp.224-235, 2013
3
서우석, 최복성, 류솔지, 이용복, 이전국, 2013, "베어링 설계 틈새 변화에 따른 고체윤활제 skq 코팅 층의 표면 특성 분석", 한국재료학회 추계학술대회, 2013
4
서우석, 최복성, 류솔지, 이용복, 이전국, 2013, "극저온 베어링용 고체 윤활제 은 코팅 층의 두께 변화에 따른 회전특성 변화(Poster)", 한국재료학회 춘계학술대회, 2013

2012

1
Sim, K., Lee, J., Kim, C. H., Lee, Y. B., Kim, T. H., 2012, “Rotordynamic Performance of Shimmed Gas Foil Bearings for Oil-Free Turbochargers,” ASME Journal of Tribology, Vol134, No.3, pp.031102, 2012
2
Lee, Y. B., Park, D. J., Kim, T. H., Sim, K., 2012, “Development and Performance Measurement of Oil-Free Turbocharger Supported on Gas Foil Bearings,” ASME Journal of Engineering for Gas Turbines and Power, Vol134, No.3, pp.032506, 2012
3
Kim, T. H., Kim, T. Y., Jung, K. H., Lee, Y. B., 2012, “Rotordynamic Performance of an Oil-Free Turbo blower Focusing on Load Capacity of Gas Foil Thrust Bearings,” ASME Journal of Engineering for Gas Turbines and Power, Vol134, No.2, pp.022501, 2012
4
Kim, T. H., Song J. W., Lee, Y. B., Sim, K., 2012, “Thermal Performance Measurement of a Bump Type Gas Foil Bearing Floating on a Hollow Shaft for Increasing Rotating Speed and Static Load,” ASME Journal of Engineering for Gas Turbines and Power, Vol134, No.2, pp.024501, 2012
5
Sim, K., Kim, T. H., 2011, “Thermohydrodynamic Analysis of Bump-type Gas Foil Bearings Using Bump Thermal Contact and Inlet Flow Mixing Models,” Tribology International, In-Press. 2012
6
Choi, B. S., Kim, T. H., Kim, C. H., Lee, Y. B., 2012, "Rotordynamic Behavior of 225kW (300HP) Class PMS Motor Generator System Supported by Gas Foil Bearings," ASME Turbo-Expo 2012, ASME Paper No. GT2012-69806, Copenhagen, Denmark. 2012
7
Sim, K., Kwon S. B., Kim, T. H., Lee, Y. B., 2012, "Feasibility Study of an Oil-Free Turbocharger Supported on Gas Foil Bearings via On-Road Tests of a 2-Liter Class Diesel Vehicle," ASME Turbo-Expo 2012, ASME Paper No. GT2012-69586, Copenhagen, Denmark. 2012
8
송진우, 김종백, 이용복, 김태호, 2012, "범프타입 가스포일베어링의 고온 동특성 규명", 한국윤할학회 춘계학술대회 발표논문집, pp.17-18, 2012
9
구본진, 심규호, 이용복, 김태호 2012, "7.5kW 마이크로 가스터빈용 무급유 파워터빈 시스템의 회전체동역학 및 온도 특성", 대한기계학회 동역학 및 제어부문 춘계학술대회 논문집, pp.60-61, 2012

2011

1
Lee, Y. B., Kwak, Y. S., Jung, J. T., Sim, K, 2011, "Microturbocharger with Air Foil Bearings for a 100W Class Micro Power System and Improvement of Rotordynamic Performance," STLE Tribology Transactions, Vol54, No.6, pp.939-948, 2011
2
Lee, Y. B., Kim, T. Y., Kim, C. H., Kim, T. H., 2012, “Effects of Metal Density on Static Load Performance of Metal Mesh Gas Foil Bearings,” ASME Journal of Engineering for Gas Turbines and Power, Vol34, No.1, pp.012502, 2011
3
Lee, Y. B., Kim, T. H., Kim, C. H., Kim, T. Y., 2011, “Thrust Bump Air Foil Bearings with Variable Axial Load: Theoretical Predictions and Experiments,” STLE Tribology Transactions, Vol54, No.6, pp.902-910, 2011
4
San Andres, L., Ryu, K., and Kim, T. H., 2011, “Thermal Management and Rotordynamic Performance of a Hot Rotor-Gas Foil Bearings System. Part 2: Predictions Versus Test Data,” ASME Journal of Engineering for Gas Turbines and Power, Vol33, No.6, pp.062502, 2011
5
San Andres, L., Ryu, K., and Kim, T. H., 2011, “Thermal Management and Rotordynamic Performance of a Hot Rotor-Gas Foil Bearings System. Part 1: Measurements,” ASME Journal of Engineering for Gas Turbines and Power, Vol33, No.6, pp.062501, 2011
6
San Andres, L., Ryu, K., and Kim, T. H., 2011, “Identification of Structural Stiffness and Energy Dissipation Parameters in a 2nd Generation Foil Bearing- Effect of Shaft Temperature,” ASME Journal of Engineering for Gas Turbines and Power, Vo133, No.3, pp.032501, 2011
7
안형준, 김승종, 이용복, 정세나, 2011, “공기포일 자기 하이브리드 베어링으로 지지되는 연성축의 휨 모드 진동 제어”, Journal of The KSTLE, Vol.27, No.2, pp.57-64, 2011
8
Lee, Y. B., Jung. S.,Kim, S. J., 2011, "Dynamic Characteristics of the Combined Smart Bearings," ASME/STLE Joint Tribology Conference, Los Angeles, CA, USA. 2011
9
Jung. S., Kim, T. H., Kim, C. H., Lee, Y. B., 2011, "Vibration Control of a High Speed Rotor Supported by the Combined Smart Bearing," ASME/STLE Joint Tribology Conference, Los Angeles, CA, USA. 2011
10
Sim, K., Song, J. W., Lee, Y. B., Kim, T. H., 2011, “Thermal Performance of a Bump Type Gas Foil Bearing Floating on a Hollow Shaft for Increasing Rotating Speed and Static Load,” ASME Turbo-Expo 2011, ASME Paper No. GT2011-46499, Vancouver, Canada. 2011
11
Kim, T. H., Kim, T. Y., Lee, Y. B., Jung, K. H., 2011, “Rotordynamic Performance of an Oil-Free Turboblower Focusing on Load Capacity of Gas Foil Thrust Bearings,” ASME Turbo-Expo 2011, ASME Paper No. GT2011-46471, Vancouver, Canada. 2011
12
Lee, Y. B., Kim, T. H., Kim, C. H., Kim, T. H., 2011, “Effects of Metal Density on Static Load Performance of Metal Mesh Gas Foil Bearings,” ASME Turbo-Expo 2011, ASME Paper No. GT2011-46589, Vancouver, Canada. 2011
13
최복성, 김태호, 김창호, 이용복, 2011, "공기 포일 베어링으로 지지된 225kW급 모터-제너레이터 시스템의 회전체 동역학적 특성", 유체기계 연구개발 발표회 논문집, pp.111-112, 2011
14
심규호, 구본진, 박수환, 이용복, 김태호, 2011, "전기자동차용 초소형 가스터빈 파워팩의 회전체 동역학 및 발전성능 측정", 유체기계 연구개발 발표회 논문집, pp.109-110, 2011
15
심규호, 박동진, 김태호, 이용복, 2011, "공기 포일 베어링으로 지지되는 2L급 디젤 차량용 터보차져의 회전체 진동 안정성 및 과급 성능에 관한 연구", 한국자동차공학회 학술대회, pp.239-246, 2011
16
김태호, 송진우, 심규호, 김창호, 이용복, 2011, "냉각 유량이 고온 회전축에 설치된 범프 타입 가스 포일 베어링의 온도에 미치는 영향", 한국윤할학회 추계학술대회논문집, pp.31-32, 2011
17
최복성, 구본진, 이용복, 김창호, 김태호, 2011, "260 kW급 초고속전동기용 공기 포일 저널 베어링과 스러스트 베어링의 설계 및 정하중 지지능력 예측", 한국윤할학회 춘계학술대회 논문집, pp.33-34, 2011
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