Search | Korea Science

김경석;강기수;양승필
- Proceedings of the Korean Reliability Society Conference
- /
- 2002.06a
- /
- pp.253-260
- /
- 2002
This paper propose Electronic Speckle Pattern Interferometry(ESPI) for reliability evaluation of electronic device. Especially, vibration problem in a fan of air conditioner, motor of washing machine and etc. is important factor to design the devices. However, it is difficult to apply previous method, accelerometer to the devices with lightweight and complex geometry. ESPI, non-contact measurement technique is applied for vibration analysis of a sirocco fan inside air conditioner. Vibration mode shapes, natural frequency and the range of the frequency are decided and compared with that of FEM analysis. In mechanical deign of new product, ESPI is able to supply effective design information.
PDF

Kim, D.K.;Ryu, J.S.;Park, S.E.;Lee, K.H.;Kim, K.H.;Lee, M.Y.
- Proceedings of the Korean Society for Technology of Plasticity Conference
- /
- 2009.05a
- /
- pp.199-202
- /
- 2009
In roll forming process, a sheet metal is continuously progressively formed into a product with required cross-section and longitudinal shape, such as a circular tube with required diameter, wall-thickness and straightness, by passing through a series of forming rolls in arranged in tandem. Tn this process, each pair of forming rolls installed in a forming machine play a particular role in making up the required cross-section and longitudinal shape of the product. In recent years, that process is often applied to the bumper rail in the automotive industries. In this study, a optimal Front Bumper Beam manufacturing technology, model deign and proper roll-pass sequences can be suggested by forming number of roll-pass and bending angle. And also effects of the process parameters on the final shape formed by roll forming defects were evaluated.
PDF

Kim, D.K.;Sohn, S.M.;Lee, K.H.;Lee, M.Y.
- Proceedings of the Korean Society for Technology of Plasticity Conference
- /
- 2008.05a
- /
- pp.357-360
- /
- 2008
In roll forming process, a sheet metal is continuously progressively formed into a product with required cross-section and longitudinal shape, such as a circular tube with required diameter, wall-thickness and straightness, by passing through a series of forming rolls in arranged in tandem. In this process, each pair of forming rolls installed in a forming machine play a particular role in making up the required cross-section and longitudinal shape of the product. In recent years, that process is often applied to the bumper rail in the automotive industries. In this study, a optimal SILL SIDE manufacturing technology, model deign and proper roll-pass sequences can be suggested by forming number of roll-pass and bending angle. And also effects of the process parameters on the final shape formed by roll forming defects were evaluated.
PDF

Kim, Seong-Gohn
- Archives of design research
- /
- v.20 no.3 s.71
- /
- pp.225-234
- /
- 2007
Time of production, Time of technique. 21 century time of technique and emotion. The design change is appearing. Technique importance and emotion importance. Importance of emotion design. Design intuition, or Design of the sensitivity. It is showing with new design methodology. Unconsciousness of human being discovery and It will make in new form method. It is design intuition. Human being craving with new design new possibility. The function is the portion which form is important. But now important is form. The use is easy and it likes the product. The digital product of present time the past product and function are same. The product technique with past is entirely different method. Design there is a new possibility. The design environment is changing. The design combines and the brand and will go with the direction.
PDF