선상가열시 이동열원 조건에 따른 가열 판재의 온도분포에 관한 연구

최윤환,이연원,최광,Choi, Yoon-Hwan,Lee, Yeon-Won,Choi, Kwang 한국마린엔지니어링학회 2010 한국마린엔지니어링학회지 Vol.34 No.5

Line heating is a manufacture method, which was widely used to machining a curved surface in the ship construction. The qualities using by line heating are very difference compare to the proficiency level of the engineer. So it's mainly depend on the automation equipment instead of the proficiency level engineer. In this study, it would be investigate the temperature distribution of the heating plate, which was used by the automation equipment according to line heating. The main factors are the moving velocity of the heating source, strength and the heating method separately, in temperature distribution while line heating. In this paper, it was investigated the temperature change with the vary of each three variables. The numerical result showed that peak temperature decrease if the moving velocity of the heating source increased. It can also calculate the change quantitatively that the peak temperature and temperature distribution changed linearly with the vary of the heating source. 선박 건조공정에서 외피의 곡면 가공에 많이 사용하는 가공법을 선상가열법이라고 한다. 선상가열법은 엔지니어의 숙련도에 따라 품질의 차이가 커지기 때문에 현재에는 엔지니어의 숙련도에 의존하지 않는 자동화기기를 사용하여 선상가열을 수행하는 경우가 많다. 본 연구에서는 자동화기기를 사용한 선상가열에 의한 가열판재의 온도분포를 조사하고자 한다. 선상가열시 적용되는 주요한 변수는 가열원의 이동속도, 강도 및 가열 방식 등이 있으며, 본 연구에서는 세 가지 변수를 중심으로 가열판재의 표면 및 내부온도가 어떻게 변화하는지를 조사하였다. 해석결과 가열원의 이동속도가 빨라질수록 판재의 피크온도는 낮게 형성되는 것을 확인하였고, 또한 열원의 크기에 따른 피크온도 및 온도분포가 선형적으로 변화하는 것을 정량적으로 계산할 수 있었다.

이동열원의 조건 변화가 선상가열에 미치는 영향에 관한 연구

최윤환(Yoon Hwan Choi),이연원(Yeon Won Lee),최광(Kwang Choi) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4

Line heating is a manufacture method, which was widely used to machining a curved surface in the ship construction. The qualities using by line heating are very difference compare to the proficiency level of the engineer. So it's mainly depend on the automation equipment instead of the proficiency level engineer. In this study, it would be investigate the temperature distribution of the heating plate, which was used by the automation equipment according to line heating. The main factors are the moving velocity of the heating source, strength and the heating method separately, in temperature distribution while line heating. In this paper, it was investigated the temperature change with the vary of each three variables. The numerical result showed that peak temperature decrease if the moving velocity of the heating source increased. It can also calculate the change quantitatively that the peak temperature and temperature distribution changed linearly with the vary of the heating source. following instructions give you basic guidelines for preparing camera-ready papers for the Journal of the KOSME. We recommend you to use the HWP word processor.

이동열원을 고려한 레일육성용접부의 잔류응력 평가

김승현(Seung Hyun Kim),이상환(Sang Hwan Lee),장윤석(Yoon-Suk Chang),서정원(Jung Won Seo),전현규(Hyen Kue Jun) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12

선상가열시 이동열원 조건에 따른 가열 판재의 온도분포에 관한 연구

최윤환(Yoon-Hwan Choi),이연원(Yeon-Won Lee),최광(Kwang Choi) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회지 Vol.34 No.4

선박 건조공정에서 외피의 곡면 가공에 많이 사용하는 가공법을 선상가열법이라고 한다. 선상가 열법은 엔지니어의 숙련도에 따라 품질의 차이가 커지기 때문에 현재에는 엔지니어의 숙련도에 의존하지 않는 자동화기기를 사용하여 선상가열을 수행하는 경우가 많다. 본 연구에서는 자동화기기를 사용한 선상가열에 의한 가열판재의 온도분포를 조사하고자 한다. 선상가열시 적용되는 주요한 변수는 가열원의 이동속도, 강도 및 가열 방식 등이 있으며, 본 연구에서는 세 가지 변수를 중심으로 가열판재의 표면 및 내부온도가 어떻게 변화하는지를 조사하였다. 해석결과 가열원의 이동속도가 빨라질수록 판재의 피크온도는 낮게 형성되는 것을 확인하였고, 또한 열원의 크기에 따른 피크온도 및 온도분포가 선형적으로 변화하는 것을 정량적으로 계산할 수 있었다. Line heating is a manufacture method, which was widely used to machining a curved surface in the ship construction. The qualities using by line heating are very difference compare to the proficiency level of the engineer. So it's mainly depend on the automation equipment instead of the proficiency level engineer. In this study, it would be investigate the temperature distribution of the heating plate, which was used by the automation equipment according to line heating. The main factors are the moving velocity of the heating source, strength and the heating method separately, in temperature distribution while line heating. In this paper, it was investigated the temperature change with the vary of each three variables. The numerical result showed that peak temperature decrease if the moving velocity of the heating source increased. It can also calculate the change quantitatively that the peak temperature and temperature distribution changed linearly with the vary of the heating source.

摩擦熱에 依한 移動熱源의 溫度上昇에 關한 考察 : 圓筒齒車,ROLLER를 中心으로

金炳哲 조선대학교 생산기술연구소 1980 生産技術硏究 Vol.1980 No.-

In friction, temperature rise is a process of radiation in atomophere which produces by the friction and occurrs by the heat transfer trough the mechanical elements. As it accompanies with oxidation, seizure, fracture and wear et al, in the nonfriction condition, it plays a important role. Also it is necessary to know the surface temperature distribution exactly in research for the cause of the surface plasticity flowing. In this paper the surface temperature rise caused by a moving heat source was calculated for the system of a two dimentional heat flow and interior temperature distribution and compared with calculated values for the system of a one dimensional heat flow.

레이저 가열 공정의 대면적 해석에 관한 기초 연구

안성환,이춘만 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-

This presents the method of large area analysis with laser process for the temperature distribution predicts of workpiece by using ANSYS Workbench, the commercial finite-element analysis software. From the method, It is possible to carried out that impossible analysis by past method because problems of great dimensions Following the results, we can expect that easily predicts temperature distribution of laser processed area. it can utilize on various purpose that thermal displacement, stress and etc.

고에너지밀도용접 과정에서의 2차원 열유동에 대한 수치해석적 연구

박건중,장경천,김찬중,Park, Kun-Joong,Jang, Kyung-Chun,Kim, Charn-Jung 대한기계학회 2000 大韓機械學會論文集B Vol.24 No.9

This work presents a two-dimensional quasi-steady state model to study the fluid flow and heat transfer in high-power density welding process of thin AISI-304 stainless steel plates. The enthalpy method and the finite volume method were used for a numerical analysis of the mushy region phase change as well as the heat flow at the weld pool and the heat-affected zone. The results show that the mushy region distributed around the weld pool becomes wider downstream and the surface heat losses by convection and radiation can be significant factors in welding process especially when a welding speed is relatively low.

厚板 鋼構造物 熔接이음부의 熱分布 特性에 關한 硏究

방한서,김종명 대한용접접합학회 1995 대한용접·접합학회지 Vol.13 No.1

Recently, as the industrial structure tends to become large, the thickness of structural plate becomes thicker. Therefore, the thicker the plate of welded structure is, the larger the shape of welded joint. The effect of large heat input makes large heat affected zone(HAZ). These bring to complict welding residual stress and to weaken material, which may cause extremely harm to the safety of structures. Nevertheless, welding is design is regulated by the KS, JIS or standard in the resister of shipping such as KR, ABS or LR. However, these rules are based on rather experimental than theoretical. In this study, the computer program of heat conduction, considering un-steady state and quasi-steady state, is developed for optimizing(minimizing) a shape of welded joint. The characteristics of heat on the welded joints with various shapes are clarified by the results of the analyses.

1kW급 수소리니어 발전기 열해석

양시원(Yang, Si-Won),이재성(Lee, Jae-Sung),권기영(Kweon, Ki-Yeong) 한국신재생에너지학회 2006 한국신재생에너지학회 학술대회논문집 Vol.2006 No.06

Recently, many researches of the alternative and renewable energy have introduced due to the increasing oil price, the limited natural resources and the environmental pollution. In case of hydrogen energy, it has some merits, which can be substituted the existing the fossil fuel because of no contaminants from the combustion and the chemical reaction. We have been developing 1kW Hydrogen Linear Generator. In this paper, the thermal characteristic of this prototype linear generator has been investigated and obtained reliable analysis results comparing with experimental measurements. Especially, it is predicted that in case of 1kW, 60Hz test sample, the results satisfy with the temperature standards of H type insulation, which is shown average 69.0?C temperature distribution at the coil.

Alloy 617강의 용접잔류응력을 포함한 파괴 역학적 특성 평가

박영수(Young Su Park),김태균(Tae Kyun Kim),배동호(Dong Ho Bae) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.11

In this study, firstly, after numerically analyzing the welding residual stress at the weld of Ni base super alloy 617. And then the fracture mechanical characteristics at the weld including welding residual stress were assessed. From the results, However, the da/dN- ? K curves taking account welding residual stress into at the HAZ of a welded joint increased by 19.8% compared with the results that were not taken account welding residual stress into. Therefore, when Alloy 617 is used as a material of the green power plant systems, it is necessary to consider seriously the welding residual stresses at weld in the process of the safe design and management.