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고속전철 객차를 위한 유한요소모델링 및 모드합성기법의 개발
장경진(Chang Kyoung-Jin),김홍준(Kim Hong-Jun),이상민(Lee Sang-Min),박영필(Park Young-Pil) 한국철도학회 1998 한국철도학회 학술발표대회논문집 Vol.- No.-
In the design of the high-speed railway vehicles of low noise and vibration characteristics, it is desirable to develop efficient and systematic procedures for analyzing large structures. In this paper, some finite-element modelling techniques and an efficient analytical method are proposed for this purpose. The analytical method is based on substructuring approach such as a free-interface method and a generalized synthesis algorithm. In final, the proposed approaches are applied to the finite-element modelling. modal analysis and subsequent model updating procedures of the high-speed railway intermediate trailers.
4차 산업혁명시대 뷰티산업에 나타난 ICT융합의 사례분석
장경진 ( Kyoung-jin Jang ),장미숙 ( Mee-sook Chang ),한수연 ( Soo-yeon Hahn ) 한국미용학회 2021 한국미용학회지 Vol.27 No.6
In this study, core technologies applied to the beauty industry (hair, makeup, skin care, nail) in the era of the 4th industrial revolution and the transition of industrial paradigm of literature review was performed. Based on this, analysis and prediction of future trends were performed through case analysis of ICT convergence applied to the beauty industry. As a result, it could be confirmed that these core technologies are progressing in the direction of improving the value of the services provided in the past through convergence. Therefore, it was possible to confirm through case analysis that the direction of the beauty industry was changing from the existing function-oriented professional service concept to customer-centered personalization, prediction, prevention, and participation. This study expands the scope of research on convergence with core technologies of the 4th industrial revolution at the conventional corporate level and expands it to the beauty industry to analyze the future through convergence with core technologies from the beauty business perspective. There are implications for predicting the direction of In addition, by categorizing the beauty industry into four types (hair, makeup, skin care, and nail), specific future directions for each sub-area are presented, thereby presenting practical implications that can be immediately applied to the workplace.
장경진(Kyoung-Jin Chang),박동철(Dong Chul Park) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
A new panel contribution analysis(PCA) method based on panel vibration control with several piezoelectric actuators has been suggested in order to identify the noise contribution of vehicle panels while driving. This method has an advantage in short test time compared to the conventional PCA method, since it doesn"t need to measure the acoustic transfer function on each panels. Besides this enables us to test the contribution of each panel simultaneously on driving. In this paper, we verify the validity of this method.