Development of thermal stress concentration factors for life assessment of turbine casings

W Choi, K Fujiyama, B Kim, G Song - International journal of pressure …, 2012 - Elsevier
The major components of thermal power plants are made of low-alloy steel and operated
under high temperature and pressure conditions. Even though such facilities have design …

A Bayesian approach for a damage growth model using sporadically measured and heterogeneous on-site data from a steam turbine

W Choi, BD Youn, H Oh, NH Kim - Reliability Engineering & System Safety, 2019 - Elsevier
Accurate prediction of the remaining useful life (RUL) of plant turbines is a major scientific
challenge for effective operation and maintenance in the power plant industry. This paper …

A neural network model for material degradation detection and diagnosis using microscopic images

W Choi, H Huh, BA Tama, G Park, S Lee - IEEE Access, 2019 - ieeexplore.ieee.org
Detection and diagnosis of material degradation are of a complex and challenging task
since it is presently hand-operated by a human. Therefore, it leads to misinterpretation and …

A life assessment for steam turbine casing using inelastic analysis

W Choi, J Hyun - Modern Physics Letters B, 2008 - World Scientific
An important characteristic of a fossil power plant is its ability to maintain reliability and
safety of the plant against frequent start-ups and load changes. Unstable states arising …

Operation-adaptive damage assessment of steam turbines using a nonlinear creep-fatigue interaction model

W Choi, H Yoon, BD Youn - IEEE Access, 2020 - ieeexplore.ieee.org
For sustainable operation, power plants require accurate damage assessment of the steam
turbines used for power generation. In the past few decades, steam turbine designs have …

[PDF][PDF] Development and Implementation of i-LAS (indentation based turbine remaining life assessment system)

W Choi, G Song, J Koo - Baltica VIII, 2010 - academia.edu
Steam turbine rotors are the most critical and highly stressed components of the steam
power plant and have the highest capital cost among all the components. It requires not only …

다양한데이터형식에적용가능한증기터빈잔존유효수명예측방법론

최우성 - 2018 - s-space.snu.ac.kr
최근 발전사간 경쟁이 치열해짐에 따라 발전 산업에서는 운전 비용을 절감하고 핵심 설비의
수명을 연장하는데 많은 노력을 기울이고 있다. 한편 운전 시간이 설계 수명에 근접함에 따라 …

[引用][C] A Model based Prognostic Methodology for Steam turbine of Power plant