Publications

International Journal

• Optimized Relative Entropy for Robust Fault Detection in Excavator Traveling Gearboxes via Smeared Envelope Spectrum Analysis of Cyclo-Non-Stationary Signals

  Kyumin Na¹, Keon Kim¹, Jinoh Yoo, Jinwook Lee, and Byeng D. Youn* Expert Systems with Applications , 2025-03 , SCIE (IF: 7.5, Rank: 5.2%) , Vol. 266, pp. 126110, 2025

  LINK

• FASER: Fault-affected Signal Energy Ratio for Fault Diagnosis of Gearboxes Under Repetitive Operating Conditions

  Kyumin Na, Yunhan Kim, Heonjun Yoon*, and Byeng D. Youn* Expert Systems with Applications , 2024-03 , SCIE (IF: 7.5, Rank: 5.2%) , Vol. 238, Part C, pp. 122078, 2024

  LINK

• Opt-TCAE: Optimal Temporal Convolutional Auto-encoder for Boiler Tube Leakage Detection in a Thermal Power Plant Using Multi-sensor Data

  Hyeongmin Kim, Jin Uk Ko, Kyumin Na, Hyeonchan Lee, Hee-soo Kim, Jong-duk Son, Heonjun Yoon*, and Byeng D. Youn* Expert Systems with Applications , 2023-04 , SCIE (IF: 7.5, Rank: 5.2%) , Vol. 215, pp. 119377, 2023

  LINK

• PERL: Probabilistic Energy-ratio-based Localization for Boiler Tube Leaks Using Descriptors of Acoustic Emission Signals

  Kyumin Na, Heonjun Yoon*, Jaedong Kim, Sungjong Kim, and Byeng D.Youn* Reliability Engineering & System Safety , 2023-02 , SCIE (IF: 9.4, Rank: 3.3%) , Vol 230, pp 108923, 2023

  LINK

• A Deep Transferable Motion-Adaptive Fault Detection Method for Industrial Robots Using a Residual-Convolutional Neural Network

  Yeongtak Oh, Yunhan Kim, Kyumin Na, and Byeng D. Youn* ISA Transactions , 2022-09 , SCIE (IF: 6.3, Rank: 4.2%) , Vol. 128, pp. 521-534, 2022

  LINK

• A New Auto-encoder-based Dynamic Threshold to Reduce False Alarm Rates for Anomaly Detection of Steam Turbines

  Jin Uk Ko, Kyumin Na, Joon-Seok Oh, Jaedong Kim, and Byeng D. Youn* Expert Systems with Applications , 2022-03 , SCIE (IF: 7.5, Rank: 5.2%) , Vol. 189, pp. 116094, 2022

  LINK

• A Health-adaptive Time-Scale Representation (HTSR) Embedded Convolutional Neural Network for Gearbox Fault Diagnostics

  Yunhan Kim, Kyumin Na, and Byeng D. Youn* Mechanical Systems and Signal Processing , 2022-03 , SCIE (IF: 7.9, Rank: 2.5%) , Vol. 167, pp. 108575, 2022

  LINK

• An Image-based Feature Extraction Method for Fault Diagnosis of Variable-speed Rotating Machinery

  Jungho Park, Yunhan Kim, Kyumin Na, Byeng D. Youn*, Yuejian Chen, Ming J. Zuo*, and Yong-Chae Bae Mechanical Systems and Signal Processing , 2022-03 , SCIE (IF: 7.9, Rank: 2.5%) , Vol. 167, pp. 108524, 2022

  LINK

• Cepstrum-assisted Empirical Wavelet Transform (CEWT) based Improved Demodulation Analysis for Fault Diagnostics of Planetary Gearboxes

  Yunhan Kim, Jong M. Ha, Kyumin Na, Jungho Park, and Byeng D. Youn* Measurement , 2021-10 , SCIE (IF: 5.2, Rank: 9.2%) , Vol. 183, pp. 109796, 2021

  LINK

• Phase-Based Time Domain Averaging (PTDA) for Fault Detection of a Gearbox in an Industrial Robot Using Vibration Signals

  Yunhan Kim, Jungho Park, Kyumin Na, Hao Yuan, Byeng D. Youn*, and Chang-soon Kang Mechanical Systems and Signal Processing , 2020-04 , SCIE (IF: 7.9, Rank: 2.5%) , Vol. 138, pp. 106544, 2020

  LINK

• Variance of Energy Residual (VER): An Efficient Method for Planetary Gear Fault Detection Under Variable-Speed Conditions

  Jungho Park, Yunhan Kim, Kyumin Na, and Byeng D. Youn* Journal of Sound and Vibration , 2019-08 , SCIE (IF: 4.3, Rank: 6.2%) , Vol. 453, pp. 253-267, 2019

  LINK

• A Positive Energy Residual (PER) based Planetary Gear Fault Detection Method under Variable Speed Conditions

  Jungho Park, Moussa Hamadache, Jong M. Ha, Yunhan Kim, Kyumin Na, and Byeng D. Youn* Mechanical Systems and Signal Processing , 2019-02 , SCIE (IF: 7.9, Rank: 2.5%) , Vol. 117, pp. 347-360, 2019

  LINK

• Tooth-wise Fault Identification for a Planetary Gearbox Based on a Health Data Map

  Jong M. Ha, Jungho Park, Kyumin Na, Yunhan Kim, and Byeng D. Youn* IEEE Transactions on Industrial Electronics , 2018-07 , SCIE (IF: 7.5, Rank: 0.2%) , Vol. 65, No. 7, pp. 5903 - 5912, 2018

  LINK

Application Patent

• International  "Apparatus and Method for Estimating Rotational Speed of Gear Box Based on Vibration Signal"

  China

  China

  Patent No. : 202411447334.3

  2024-10-16

• International  "Apparatus and Method for Estimating Rotational Speed of Gear Box Based on Vibration Signal"

  United States of America

  United States of America

  Patent No. : 18/917100

  2024-10-16

• International  "Apparatus and Method for Estimating Rotational Speed of Gear Box Based on Vibration Signal"

  European Patent

  European Patent

  Patent No. : 24206820.3

  2024-10-16

• Domestic  "Apparatus and Method for Diagnosing the State of Rotating Machine System Based on Operating State Modeling Data"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2024-0078387

  2024-06-17

• Domestic  "Apparatus and Method for Estimating Rotational Speed of Gear Box Based on Vibration Signal"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2023-0138195

  2023-10-17

• Domestic  "Apparatus and Method for Diagnosing Gear Box Based on Vibration Signal"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2023-0138192

  2023-10-17

Registration Patent

• Domestic  "Anormaly Data Detection Apparatus and Method Based on Auto Encoder"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2653349

  2024-03-27

• Domestic  "Apparatus and Method for Detecting Fault of Planetary Gearbox Using Cepstrum-based Signal Analysis"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2598458

  2023-11-01

• Domestic  "Motion Signal Extraction System and Method Based on Vibration Signal"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2566810

  2023-08-09

• Domestic  "System and Method for Detecting Tube Leakage Using State Signal of Power Generation Plant"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2560573

  2023-07-24

• Domestic  "System and Method for Detecting Tube Leakage Using State Signal of Power Generation Plant"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2560572

  2023-07-24

• Domestic  "System and Method for Detecting Tube Leakage Using State Signal of Power Generation Plant"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2557199

  2023-07-14

• Domestic  "System and Method for Detecting Tube Leakage Using State Signal of Power Generation Plant"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2557198

  2023-07-14

• Domestic  "Method and System for Detecting Fault of Swing Device"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2485686

  2023-01-03

• Domestic  "Apparatus and Method for Detecting Fault of Gearbox Using Phase Information"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2382628

  2022-03-30

• Domestic  "Boiler Piping Monitoring System and Method"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2226050

  2021-03-04

• Domestic  "Apparatus and Method for Detecting Fault Using Time-Frequency Image"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2161577

  2020-09-24

• Domestic  "Fault Detection Apparatus and Method for Gears under Variable-Speed Condition Using Short-Time Fourier Transform"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2077298

  2020-02-07

• Domestic  "Vibration Characteristics Data Map Processing Apparatus for Diagnosing a Fault of Planetary Gear Box"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2026065

  2019-09-23

International Conference

• "Convolutional Auto-Encoder Based Boiler Tube Leakage Detection Method in a Thermal Power Plant"

  Hyeongmin Kim, Kyumin Na, Jin Uk Ko, Heonjun Yoon, and Byeng D. Youn Conference : ASME 2023 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference 2023-08-23

• "Anomaly Detection of a Steam Turbine by a Novel Auto-Encoder-Based Dynamic Threshold"

  Jin Uk Ko, Kyumin Na, and Byeng D. Youn Conference : ASME 2022 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference 2022-08-16

• "A Probabilistic Threshold considering Probability Distribution of Reconstruction Error on a Latent Space for Anomaly Detection using Auto-Encoder"

  Kyumin Na, Jin Uk Ko, Hyeongmin Kim, and Byeng D. Youn Conference : Asia Pacific Conference of the Prognostics and Health Management Society 2021 2021-09-09

• "A Novel Multiscale Convolutional Neural Network for Industrial Gearbox Fault Diagnostics"

  Yunhan Kim, Kyumin Na, and Byeng D. Youn Conference : Asia Pacific Conference of the Prognostics and Health Management Society 2021 2021-09-08

• "A Physics-Informed Feature Engineering Approach to Boiler Tube Diagnosis"

  Hyeonchan Lee, Kyumin Na, Hyeongmin Kim, and Byeng Dong Youn Conference : Asia Pacific Conference of the Prognostics and Health Management Society 2021 2021-09-08

• "Intelligent Fault Diagnostics Based on a New Convolutional Neural Network for Smart Manufacturing"

  Yunhan Kim, Kyumin Na, and Byeng D. Youn Conference : International Conference on Energy, Aquatech and Sustainability 2021 2021-08-12

• "A Novel Fault Detection Method of Industrial Robots Using Motor Current Signals via Convolutional Neural Network (CNN)"

  Yeongtak Oh, Yunhan Kim, Kyumin Na, and Byeng D. Youn Conference : The 5th International Conference on Materials and Reliability 2019-11-27

• "Fault Detection of a Planetary Gear under Variable-speed Conditions Based on Time-frequency Image"

  Jungho Park, Yunhan Kim, Kyumin Na, and Byeng D. Youn Conference : 2019 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE 2019) 2019-08-07

• "Vibration-Based Fault Detection of a Gearbox in an Industrial Robot Using Improved Time Domain Averaging"

  Yunhan Kim, Jungho Park, Kyumin Na, Hao Yuan and Byeng D. Youn Conference : International Symposium on Precision Engineering and Sustainable Manufacturing 2019-07-11

• "Hybriding Data-driven and Model-based Approaches for Fault Diagnosis of Rail Vehicle Suspensions"

  Chan Hee Park, Sooho Kim, Junmin Lee, Dong-Ki Lee, Kyumin Na, Joowhan Song and Byeng D. Youn Conference : Annual Conference of the Prognostics and Health Management Society 2017 2017-10-04

• "Robust Fault Detection Method for Industrial Robots under Various Operating Conditions"

  Yunhan Kim, Jungho Park, Kyumin Na, Byeng D. Youn, Chang-Soon Kang and Jae-Sang You Conference : ASME 2018 International Design and Engineering Technical Conferences & Computers and Information in Engineering Conference 2018-08-29

• "Optimal Frequency Band Energy for Fault Diagnosis of Industrial Robot Using Current Signal"

  Kyumin Na, Jungho Park, Yunhan Kim and Byeng D. Youn Conference : International Conference on Energy and Sustainability 2018 2018-10-19

Domestic Conference

• "비정상 운행 조건 하 고장 진단을 위한 스펙트로그램 표현 에너지의 확률적 모델링"

  나규민, 윤병동 Conference : 한국 PHM학회 2023년도 정기학술대회 2023-07-04

• "건설장비 기어박스 진단을 위한 회전 속도 추정 방법 개발"

  김건, 나규민, 이진욱, 유진오, 윤병동 Conference : 한국자동차공학회 춘계학술대회 2023-05-24

• "변속 조건 하에서의 기어박스 진단을 위한 회전 속도 추정 방법 개발"

  김건, 나규민, 이진욱, 유진오, 윤병동 Conference : 한국PHM학회 2022년도 정기학술대회 2022-06-30

• "고장 신호 강화 이미지를 통한 기어박스 다중 클래스 고장 진단"

  나규민, 김건, 윤헌준, 윤병동 Conference : 대한기계학회 CAE 및 응용역학부문 2022년 춘계학술대회 2022-05-19

• "동적 기준치 설정을 통한 증기 터빈 이상 감지"

  고진욱, 나규민, 김형민, 윤병동 Conference : 한국PHM학회 2021년도 정기학술대회 2021-09-09

• "음향신호 에너지 감소 메커니즘 기반 확률적 보일러 튜브 누설 위치 추정"

  나규민, 김형민, 이현찬, 윤병동 Conference : 대한기계학회 2020년 학술대회 2020-12-18

• "Convolutional Neural Network(CNN) based Boiler Tube Leakage Detection in a Power Plant"

  오영탁, 나규민, 윤명백, 윤병동 Conference : PHM KOREA 2019 2019-04-11

• "산업용 로봇의 고장 진단을 위한 자율적 최적 주파수 에너지 선택 기법"

  나규민, 박정호, 김윤한, 윤병동 Conference : PHM KOREA 2019 2019-04-12

• "산업용 로봇 기어박스 고장 감지를 위한 위상정보 활용 시간영역 평균법"

  김윤한, 박정호, 나규민, 유안 하오, 윤병동 Conference : PHM KOREA 2019 2019-04-12

• "포락선 평균법을 활용한 향상된 복조 분석 기반 유성기어박스 고장 진단 방법"

  김윤한, 박정호, 나규민, 윤병동 Conference : 대한기계학회 2019년 학술대회 2019-11-13

• "굴삭기 기어박스 고장 진단을 위한 고장 정보 강화 전처리 이미지 기반 트랜스퍼 러닝"

  나규민, 박정호, 김윤한, 윤병동 Conference : 대한기계학회 2019년 학술대회 2019-11-13

• "상관성 윈도우 행렬 기반 합성곱 장단기 기억 신경망을 이용한 실시간 보일러 튜브 누설 진단 기술"

  김형민, 오영탁, 나규민, 윤병동 Conference : 대한기계학회 2019년 학술대회 2019-11-15

• "윈도우 특성 이미지 기반 합성곱 신경망을 활용한 보일러 상태 진단"

  이현찬, 김형민, 나규민, 윤병동 Conference : 대한기계학회 2020년 학술대회 2020-12-16

• "증기 터빈 이상 감지를 위한 동적 기준치 개발"

  고진욱, 나규민, 김형민, 윤병동 Conference : 대한기계학회 2020년 학술대회 2020-12-16

• "유성기어박스의 고장 진단을 위한 향상된 웨이블릿 변환 기반 신호 복조 방법"

  김윤한, 하종문, 나규민, 윤병동 Conference : 한국정밀공학회 2020 통합학술대회 2020-09-15

• "신호 에너지 감소 효과를 고려한 확률 모형 기반 보일러 누설 위치 추정"

  나규민, 김형민, 이현찬, 윤병동 Conference : 대한기계학회 CAE 및 응용역학부문 2020년도 춘계학술대회 2020-08-20

• "위상 정보 활용 시간 영역 평균법을 이용한 산업용 로봇 고장 진단"

  김윤한, 박정호, 나규민, 윤병동 Conference : 대한기계학회 2018년도 학술대회 2018-12-12

• "시간-주파수 이미지 데이터를 활용한 가변 속도 유성기어의 고장 감지법 개발"

  박정호, 김윤한, 나규민, 윤병동 Conference : 대한기계학회 2018년도 학술대회 2018-12-12

• "진동신호의 주파수 도메인 불확실성을 고려한 데이터 증폭 기반 굴삭기 스윙기어박스의 고장 진단"

  나규민, 김건, 하종문, 윤병동 Conference : 대한기계학회 2018년도 학술대회 2018-12-14

• "이미지 데이터를 이용한 가변 속도 유성기어의 고장 감지 기법 개발"

  박정호, 김윤한, 나규민, 윤병동, 주오 밍 Conference : PHM KOREA 2019 2019-04-11

• "산업용 로봇 기어박스의 동작 적응형 퓨샷 고장 감지 기법"

  오영탁, 나규민, 김윤한, 윤병동 Conference : 한국PHM학회 2020년도 정기학술대회 2020-07-23

• "순환 합성곱 자동 엔코더 기반 실시간 보일러 누설 감지 기법"

  김형민, 오영탁, 나규민, 윤병동 Conference : 한국PHM학회 2020년도 정기학술대회 2020-07-23

• "순간 주파수 기반 신호 분해를 활용한 기어박스 고장 진단"

  나규민, 김윤한, 윤병동 Conference : 한국PHM학회 2020년도 정기학술대회 2020-07-22

Awards

• 나규민 ,"PHM Korea 2023 정기학술대회 우수 발표상" 2024-06-28

• 김윤한, 나규민, 윤병동 ,"Asia Pacific Conference of the Prognostics and Health Management Society 2021 - Best Student Award (Bronze Medal)" 2021-09-10

• 김윤한, 박정호, 나규민, 윤병동 ,"대한기계학회 2019년도 학술대회 신뢰성부문 - 우수학생논문상" 2020-07-16

• 오영탁, 김윤한, 나규민, 윤병동 ,"International Conference on Materials and Reliability 2019 - Best Paper Award" 2019-12-10

• 오영탁, 나규민, 윤명백, 윤병동 ,"한국PHM학회 2019년도 정기학술대회 - 우수포스터상" 2019-04-12

• 나규민, 박정호, 김윤한, 윤병동 ,"한국PHM학회 2019년도 정기학술대회 - 우수발표상" 2019-04-12

• 박찬희, 김수호, 이준민, 이동기, 나규민, 송주환, 윤병동 ,"2017 PHM Society Data Challenge Competition - Winner" 2017-10-04