Research Achievements 5 페이지 | 포항공과대학교 친환경소재대학원

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Research Achievements

Total 155건 5 페이지

91

MML [MML]Prof.Frederic Barlat : Finite element implementation of hydrostatic pressure-sensitive plasticity and its application to distortional hardening model and sheet metal forming simulations In this work, the hydrostatic pressure-dependency of the distortional plasticity model HAH20 was implemented using a finite element (FE) code to account for the strength-differential (SD) effect that has been observed in advanced high..

작성자 최고관리자 작성일 2022-08-04
90

MML [MML]Prof.Frederic Barlat : Investigation of Elastic Modulus Degradation and Recovery with Time and Baking Process for Deformed Automotive Steel Sheets This study investigated the elastic recovery phenomenon with elapsed time and heat treatment after the plastic deformation of automotive steel sheets. A conventional uniaxial loading–unloading-loading test was modified to include the ..

작성자 최고관리자 작성일 2022-08-04
89

CML [CML]Prof.Dong-Woo Suh: Interplay of Nb addition and annealing temperature and its influence on microstructure and tensile properties of multiphase steel We investigated the interplay of Nb addition and annealing temperature and its influence on the microstructure evolution in low carbon cold-rolled steel to understand the unique change of tensile properties derived by Nb addition. While the..

작성자 최고관리자 작성일 2022-06-14
88

CML [CML]Prof.Dong-Woo Suh: Microstructure and tensile properties of chemically heterogeneous steel consisting of martensite and austenite We made the chemical heterogeneity in steel consisting of mostly martensite with retained austenite by applying intercritical annealing prior to full austenitization. It enables simultaneous improvement in strength and ductility, which have..

작성자 최고관리자 작성일 2022-06-14
87

SNMPL [SNMPL]Prof.Hyoung-Seop Kim:Novel deep learning approach for practical applications of indentation The instrumented indentation technique has been investigated to efficiently evaluate the mechanical responses of materials with few limitations on the shape and size of the specimen. There have been attempts to discover a direct corre..

작성자 최고관리자 작성일 2022-05-04
86

SNMPL [SNMPL]Prof.Hyoung-Seop Kim:High-entropy alloys with heterogeneous microstructure: Processing and mechanical properties Engineering metallic materials are an essential class of materials for a variety of industrial applications due to their competitive mechanical properties, especially strength and ductility. Metallic materials with excellent mechanical pro..

작성자 최고관리자 작성일 2022-05-03
85

PML [PML]Prof.Eul-Bum Lee:The Engineering Machine-Learning Automation Platform (EMAP): A Big-Data-Driven AI Tool for Contractors’ Sustainable Management Solutions for Plant Projects Plant projects, referred to as Engineering Procurement and Construction (EPC), generatemassive amounts of data throughout their life cycle, from the planning stages to the operation andmaintenance (OM) stages. Many EPC contractors struggle ..

작성자 최고관리자 작성일 2022-04-11
84

PML [PML]Prof. Eul-Bum Lee:AI and Text-Mining Applications for Analyzing Contractor’s Risk in Invitation to Bid (ITB) and Contracts for Engineering Procurement and Construction (EPC) Projects Contractors responsible for the whole execution of engineering, procurement, and construction(EPC) projects are exposed to multiple risks due to various unbalanced contracting methods suchas lump-sum turn-key and low-bid selection. Although..

작성자 최고관리자 작성일 2022-04-01
83

PML [PML]Prof. Eul-Bum Lee: A Digitalized Design Risk Analysis Tool with Machine-Learning Algorithm for EPC Contractor’s Technical Specifications Assessment on Bidding Engineering, Procurement, and Construction (EPC) projects span the entire cycle of industrial plants, from bidding to engineering, construction, and start-up operation and maintenance.Most EPC contractors do not have systematic decision-mak..

작성자 최고관리자 작성일 2022-03-23
82

SSL [SSL]Prof.Sung-Joon Kim:C clustering and partitioning by static strain aging in cold-rolled 16Cr-5Ni supermartensitic stainless steel Static strain aging behavior of cold-rolled 16Cr-5Ni supermartensitic stainless steel was investigated after it had been aged for 30 min at 400 °C. In uniaxial tensile tests of 20% cold-rolled specimens, increase of yield strength to ~300 M..

작성자 최고관리자 작성일 2022-03-02
81

SSL [SSL] Prof. Sung-Joon Kim: Counter-balancing effects of Si on C partitioning and stacking fault energy of austenite in 10Mn quenching and partitioning steel Silicon is an essential alloying element in quenching and partitioning (Q&P) steels, because it is known to suppress carbide precipitation during partitioning step and promote carbon partitioning to stabilize austenite. When 2 wt% Si wa..

작성자 최고관리자 작성일 2022-02-22
80

CTL [CTL] Prof. Jung-Wook Cho: Effect of Zr addition on metastable Liquid-Liquid Phase Separation of Cu-Fe alloys The liquid-liquid phase separation (LLPS) behavior was investigated in Cu-Fe alloys that consisted of 60 wt % or 80 wt % Cu and balance iron, without or with addition of 1 wt% Zr. Both Zr-free alloys clearly showed LLPS at metastable spinod..

작성자 최고관리자 작성일 2022-02-22
79

CTL [CTL] Prof. Jung-Wook Cho: Numerical modeling of oxide particle evolution during additive manufacturing In this study, oxide particle evolution during additive manufacturing was modelled to elucidate the evolution and suggest effective ways to increase oxide-dispersion strengthening. The model coupled the Kampmann and Wagner numerical model w..

작성자 최고관리자 작성일 2022-02-08
78

CSL [CSL] Prof.Youn-Bae Kang: Simultaneous Analysis of Soluble and Insoluble Oxygen Contents in Steel Specimens Using Inert Gas Fusion Infrared Absorptiometry In order to evaluate cleanliness of steel samples which contain oxygen in two different forms - chemically dissolved form and physically dispersed form in steel matrix, identification of each oxygen in the steel is important. A simple but p..

작성자 최고관리자 작성일 2022-01-13
77

CSL [CSL] Prof.Youn-Bae Kang: Phase equilibria of Al2O3–TiOx system under various oxygen partial pressure: Emphasis on stability of Al2TiO5–Ti3O5 pseudobrookite solid solution Phase equilibria of Al2O3–TiOx system were experimentally determined in a wide range of T and PO2: 1300 °C ≤T≤ 1600 °C and −16.6≤logPO2≤−8.0 (in atm). X-Ray diffraction and electron probe micro-analysis were employed to obtain equilibr..

작성자 최고관리자 작성일 2022-01-12
76

EMRL [EMRL]Prof. Kyu-Young Park: Elucidating and Mitigating High-Voltage Degradation Cascades in Cobalt-Free LiNiO2 Lithium-Ion Battery Cathodes LiNiO2 (LNO) is a promising cathode material for next-generation Li-ion batteries due to its exceptionally high capacity and cobalt-free composition that enables more sustainable and ethical large-scale manufacturing. However, its poo..

작성자 최고관리자 작성일 2021-12-20

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