Publications

International Journal

• Physics-based Digital Twin Updating and Twin-based Explainable Crack Identification of Mechanical Lap Joint

  Wongon Kim and Byeng D. Youn* Reliability Engineering & System Safety , Accepted , SCIE (IF: 9.4, Rank: 3.3%) , 2024

• A New Initial Point Search Algorithm for Bayesian Calibration with Insufficient Statistical Information: Greedy Stochastic Section Search

  Hyeonchan Lee, Wongon Kim*, Hyejeong Son, Hyunhee Choi, Soo-Ho Jo, and Byeng D. Youn* Structural and Multidisciplinary Optimization , 2023-06 , SCIE (IF: 3.6, Rank: 17.0%) , Vol. 66, pp. 124, 2023

  LINK

• Digital Twin Approach for On-Load Tap Changers Using Data-driven Dynamic Model Updating and Optimization-based Operating Condition Estimation

  Wongon Kim, Sunuwe Kim, Jingyo Jeong, Hyunjae Kim, Hyunchan Lee, and Byeng D. Youn* Mechanical Systems and Signal Processing , 2022-12 , SCIE (IF: 7.9, Rank: 2.5%) , Vol. 181, pp. 109471, 2022

  LINK

• Estimation of Fatigue Crack Initiation and Growth in Engineering Product Development using a Digital Twin Approach

  Wongon Kim, Guesuk Lee*, Hyejeong Son, Hyunhee Choi, and Byeng D. Youn* Reliability Engineering & System Safety , 2022-10 , SCIE (IF: 9.4, Rank: 3.3%) , Vol. 226, pp. 108721, 2022

  LINK

• Learning from Even a Weak Teacher: Bridging Rule-based Duval Method and a Deep Neural Network for Power Transformer Fault Diagnosis

  Sunuwe Kim, Jongmin Park, Wongon Kim, Soo-Ho Jo*, and Byeng D. Youn* International Journal of Electrical Power and Energy Systems , 2022-03 , SCIE (IF: 5.0, Rank: 18.3%) , Vol. 136, pp. 107619, 2022

  LINK

• A Comparative Study of Statistical Validation Metrics with Consideration of Variance to Address Type II Errors in Statistical Model Validation

  Hyejeong Son, Hyunhee Choi, Wongon Kim, Byeng D. Youn*, and Guesuk Lee* Structural and Multidisciplinary Optimization , 2022-02 , SCIE (IF: 3.6, Rank: 17.0%) , Vol. 65, pp. 63, 2022

  LINK

• A Semi-Supervised Autoencoder with an Auxiliary Task (SAAT) for Power Transformer Fault Diagnosis Using Dissolved Gas Analysis

  Sunuwe Kim¹, Soo-Ho Jo¹, Wongon Kim, Jongmin Park, Jingyo Jeong, Yeongmin Han, Daeil Kim, and Byeng D. Youn* IEEE Access , 2020-10 , SCIE (IF: 3.4, Rank: 34.5%) , Vol. 8, pp. 178295-178310, 2020

  LINK

• A New Calibration Metric that Considers Statistical Correlation: Marginal Probability and Correlation Residuals

  Wongon Kim, Heonjun Yoon*, Guesuk Lee, Taejin Kim, and Byeng D. Youn* Reliability Engineering & System Safety , 2020-03 , SCIE (IF: 9.4, Rank: 3.3%) , Vol. 195, pp. 106677, 2020

  LINK

• Review of Statistical Model Calibration and Validation-From the Perspective of Uncertainty Structures

  Guesuk Lee, Wongon Kim, Hyunseok Oh*, Byeng D. Youn*, and Nam H. Kim Structural and Multidisciplinary Optimization , 2019-10 , SCIE (IF: 3.6, Rank: 17.0%) , Vol. 60, pp. 1619-1644, 2019

  LINK

Application Patent

• International  "Transformer Malfunction Diagnosis Device and Malfuction Diagnosis Method Using Same"

  United States of America

  United States of America

  Patent No. : 18/260090

  2023-06-30

• International  "System and Method for Estimating Pressure DIstribution of a Battery Cell"

  United States of America

  United States of America

  Patent No. : 18/079695

  2022-12-12

• International  "Fault Diagnosis Device of Transformer and Fault Diagnosis Method Using the Same"

  Patent Cooperation Treaty

  Patent Cooperation Treaty

  Patent No. : PCT/KR2021/013531

  2021-10-01

• Domestic  "System and Method for Estimating Pressure Distribution of Fuel Cell"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2022-0054203

  2022-05-02

Registration Patent

• Domestic  "Method for Determining initial Value of Markov Chain Monte Carlo Sampling"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2635503

  2024-02-05

• Domestic  "Method for Detecting Mechanical Anomaly of Tap-changer"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2565620

  2023-08-07

• Domestic  "Method and Apparatus for Power Transformer Fault Diagnosis"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2374551

  2022-03-10

• Domestic  "Fault Diagnosis Device of Transformer and Fault Diagnosis Method Using the Same"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2354342

  2022-01-18

• Domestic  "Fault Diagnosis Method of Transformer"

  Republic of Korea

  Republic of Korea

  Patent No. : 10-2128460

  2020-06-24

International Conference

• "Stochastic Physics-based Model Updating for Fatigue Crack Detection in Riveted Lap Joints Using Lamb Waves"

  Wongon Kim and Byeng D. Youn Conference : 15th World Congress on Computational Mechanics & 8th Asian Pacific Congress on Computational Mechanics 2022-08-05

• "Stochastic Physics-based Model Updating Using Lamb Waves for Fatigue Crack Detection in Riveted Lap Joints"

  Wongon Kim and Byeng D. Youn Conference : International Conference on Precision Engineering and Sustainable Manufacturing 2022 2022-07-21

• "A Data-driven Molding Process Optimization Considering Important Features Related to Molding Quality and Efficiency"

  Minseok Chae, Wongon Kim, and Byeng D. Youn Conference : Asian Congress of Structural and Multidisciplinary Optimization 2022 2022-05-24

• "A Model Updating Framework for a Digital Twin of On-Load Tap Changers"

  Wongon Kim, Sunuwe Kim, Jingyo Jeong, Hyunjae Kim, and Byeng D Youn Conference : Asia Pacific Conference of the Prognostics and Health Management Society 2021 2021-09-08

• "A Semi-Supervised Autoencoder with an Auxiliary Task (SAAT) to Extract a Health Feature Space for Power Transformer Fault Diagnosis Using Dissolved Gas Analysis"

  Sunuwe Kim, Soo-Ho Jo, Wongon Kim, Jongmin Park, and Byeng D. Youn Conference : Asia Pacific Conference of the Prognostics and Health Management Society 2021 2021-09-08

• "A Model Updating Framework for Digital Twin with an Insufficient Prior Knowledge"

  Wongon Kim and Byeng D. Youn Conference : 14th World Congress of Structural and Multidisciplinary Optimization 2021-06-14

• "A Statistical Model Updating for Mechanical Health State Estimation of On-Load Tap Changers"

  Wongon Kim and Byeng D. Youn Conference : Asian Congress of Structural and Multidisciplinary Optimization (ACSMO) 2020 2020-11-23

• "A Recursive Model Updating to Estimate Fatigue Crack Initiation and Growth"

  Wongon Kim, Hyejeong Son, Guesuk Lee, and Byeng D. Youn Conference : ASME Verification & Validation Symposium 2020 2020-05-20

• "Autonomous Health Data Extraction for Power Transformer in Large Scale Data Sets using Autoencoder"

  Sunuwe Kim, Hyunjae Kim, Wongon Kim, and Byeng D. Youn Conference : Asia Pacific Conference of the Prognostics and Health Management 2019 2019-07-24

• "Sequential Shift Mechanism Fault Diagnosis of Power Transformer using Dynamic Model and Deep Learning"

  Wongon Kim, Sunuwe Kim, Hyunjae Kim, and Byeng D. Youn Conference : Asia Pacific Conference of the Prognostics and Health Management 2019 2019-07-24

• "Optimization-Based Model Calibration Considering Model form Uncertainty to Improve Computational Predictions of Vibrational Behaviors"

  Hyejeong Son, Wongon Kim, Guesuk Lee, and Byeng D. Youn Conference : 13th World Congress of Structural and Multidisciplinary Optimization 2019-05-25

• "Statistical Model Calibration and Refinement of an Automotive Subframe Model for Estimating Crack Locations"

  Wongon Kim, Guesuk Lee, Hyejeong Son, and Byeng D. Youn Conference : 13th World Congress of Structural and Multidisciplinary Optimization 2019-05-20

• "Classification of Statistical Model Validation Problems Considering the Nature of Uncertainty"

  Guesuk Lee, Hyunseok Oh, Wongon Kim, and Byeng D. Youn Conference : Asian Congress of Structural and Multidisciplinary Optimization 2016 2016-05-24

• "A New Calibration Metric to Improve the Solution Feasibility of Calibration Problems: Marginal Probability and Correlation Residuals (PCR)"

  Wongon Kim, Guesuk Lee, Hyejeong Son, Guilian Yi, Byeng D. Youn Conference : 12th World Congress of Structural and Multidisciplinary Optimization 2017-06-08

• "Statistical model calibration using bias ratio to consider model form uncertainty: A case study of an automobile steering system model"

  Hyejeong Son, Guesuk Lee, Wongon Kim and Byeng D. Youn Conference : Asian Congress of Structural Multidisciplinary Optimization 2018 2018-05-22

• "A Comparative Study of Optimization-based Model Calibration Metrics: From the Perspective of Statistical Correlations between Multivariate Responses"

  Wongon Kim, Heonjun Yoon, Guesuk Lee, Taejin Kim and Byeng D. Youn Conference : Asian Congress of Structural Multidisciplinary Optimization 2018 2018-05-22

Domestic Conference

• "FDM 공정의 제조 불확실성을 고려하여 3D 프린팅 치과 임플란트 수술 가이드의 임플란트 과정에서의 변형 측정 절차"

  임주현, 김원곤, 정구엽, 안성훈, 윤병동 Conference : 한국정밀공학회 2023추계학술대회 2023-11-17

• "FDM 방식 3D 프린터에 대한 딥러닝 기반 물성 추정"

  임주현, 김원곤, 안성훈, 윤병동 Conference : 대한기계학회 2022년 학술대회 2022-11-11

• "융합 수지 압출 적층 조형의 디지털 트윈을 위한 최적화 기반 시계열 데이터 보간 기법"

  김원곤, 임주현, 안성훈, 윤병동 Conference : 대한기계학회 2022년 학술대회 2022-11-09

• "사출 성형 작업의 성형 품질 관련 중요 인자를 고려한 데이터 기반 공학적 의사 결정 방법"

  채민석, 김원곤, 윤병동 Conference : 한국PHM학회 2022년도 정기학술대회 2022-07-01

• "리벳 접합부 균열 발생 추정을 위한 램 파형을 이용한 통계적 물리 모델 갱신 방법"

  김원곤, 윤병동 Conference : 대한기계학회 CAE 및 응용역학부문 2022년 춘계학술대회 2022-05-20

• "부족한 사전 지식 조건에서 마코프 체인 몬테카를로 방법을 위한 초기값 탐색 알고리즘"

  이현찬, 김원곤, 손혜정, 최현희, 윤병동 Conference : 대한기계학회 CAE 및 응용역학부문 2021년도 춘계학술대회 2021-08-25

• "Fault On Load Tap Changer Vibration Signal Generation using Dynamic Model"

  김원곤, 김선의, 김현재, 윤병동 Conference : PHM KOREA 2019 2019-04-12

• "변전 설비 기계적 구동 장치의 동적 모델을 이용한 이상 데이터 생성"

  김원곤, 김현재, 김선의, 윤병동 Conference : 대한기계학회 CAE 및 응용역학부문 2019년도 춘계학술대회 2019-04-18

• "모델 불확실성을 고려한 최적화 기반 통계적 모델 보정"

  손혜정, 이규석, 김원곤, 윤병동 Conference : 대한기계학회 CAE 및 응용역학부문 2019년도 춘계학술대회 2019-04-18

• "시스템 건전성 상태 천이 추정을 위한 재귀적 모델 갱신"

  김원곤, 이규석, 손혜정, 윤병동 Conference : 대한기계학회 2019년 학술대회 2019-11-15

• "변압기 절연열화 추정을 위한 딥러닝 기반 건전성 데이터 추출"

  김선의, 김현재, 김원곤, 윤병동 Conference : 대한기계학회 2019년 학술대회 2019-11-15

• "변압기 고장 진단을 위한 유중가스분석 기반 준감독 오토인코더와 보조 학습으로 건전성 평면 추출"

  김선의, 조수호, 김원곤, 박종민, 윤병동 Conference : 대한기계학회 CAE 및 응용역학부문 2020년도 춘계학술대회 2020-08-20

• "해석모델의 효율적 검증을 위한 보정 척도 비교"

  최환오, 손혜정, 김원곤, 이규석, 오현석, 윤병동 Conference : 대한기계학회 2016년도 CAE 및 응용역학부문 춘계학술대회 2016-04-08

• "최적화 기법을 이용한 통계적 보정을 위한 보정척도 비교 분석"

  이규석, 손혜정, 김원곤, 오현석, 윤병동 Conference : 대한기계학회 2016년도 학술대회 2016-12-14

• "자동차 스티어링 컬럼의 진동 성능에 대한 통계적 모델 업데이트"

  손혜정, 이규석, 김원곤, 오현석, 윤병동 Conference : 대한기계학회 2016년도 학술대회 2016-12-14

• "입/출력 변수의 불확실성 상관성을 고려한 차량 구조 유한요소 모델의 확률론적 보정 및 검증"

  김원곤, 이규석, 손혜정, 오현석, 윤병동 Conference : 대한기계학회 2016년도 학술대회 2016-12-14

• "다변량 응답 간의 통계적 상관성을 고려한 최적화 기반 통계적 모델 보정"

  김원곤, 윤헌준, 이규석, 김태진, 윤병동 Conference : 대한기계학회 CAE 및 응용역학부문 2018년도 춘계학술대회 2018-04-26

• "복잡한 공학 시스템 모델을 위한 모델 보정 기법 개선"

  손혜정, 이규석, 김원곤, 김태진, 윤병동 Conference : 대한기계학회 CAE 및 응용역학부문 2018년도 춘계학술대회 2018-04-27

• "피로 균열 생성 및 성장 추정을 위한 재귀적 모델 갱신"

  김원곤, 이규석, 손혜정, 윤병동 Conference : 한국PHM학회 2020년도 정기학술대회 2020-07-23

• "변형 조건부 GAN의 설명가능한 변압기 고장진단"

  김선의, 김원곤, 박종민, 정진교, 윤병동 Conference : 한국PHM학회 2020년도 정기학술대회 2020-07-22

• "탭 절환 장치의 기계적 상태 추정을 위한 디지털 트윈 갱신 방법론"

  김원곤, 김선의, 정진교, 윤병동 Conference : 2020년도 춘계 소음진동 학술대회 2020-06-04

Awards

• 임주현, 김원곤, 안성훈, 윤병동 ,"대한기계학회 CAE 및 응용역학부문 2022년도 춘계 학술대회 - 우수논문상" 2023-05-18

• 김원곤, 채민석 ,"2021년 K-인공지능 제조데이터 분석 경진대회 - 우수상(스마트제조혁신추진단장상)" 2021-12-16