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Tailor Welded Blanks 적용을 위한 Front Side Member의 설계기법연구
강대철,전병희,전한수 한국공작기계학회 2001 한국생산제조학회지 Vol.10 No.1
The use of tailor welded blanks(TWB) in automotive applications is increasing due to the potential of weight and cost saving. The object of this study is development of the front side member by static analysis and crash simulations. According to the results, energy absorption and barrier force is very important parameter to control passenger safety and deformation shape. A energy absorbability point of view, tailor welded blanks is most effective to absorb energy than non-twb. Non-TWB front side member and TWB applied front side member were simulated. It shows reduce stamping pacts, weight reduction and cost down.
造園樹木(觀賞)의 利用開發을 爲한 特性調査 : 멀구슬나무외 107種에 대하여
姜大哲 진주산업대학교 1968 論文集 Vol.2 No.-
Recreation이 都市集中의 現狀을 벗어나 自然에 도라가게 되므로서 神秘로운 매력을 가진 自然環境을 維持하고 있는 森林을 開發코 各種의 休養, 정서 敎養社交場(例로서「콜프」場같은)으로서 利用의 度가 높아지며 따라 造園에 對한 關心이 高潮되고 觀賞樹에 對한 價値評價 또한 달라져 只今까지 거의 無放狀態이던 觀賞樹의 分類와, 그 特性을 調査 硏究하여 보다 많은 野生觀賞樹의 利用度를 높이고저 調査한 結果를 보면 다음과 같다. 1.開花樹種中 가장 빠른 것이 동백나무 (2月 23日)였으며, 가장 늦은 樹種이 팔손이 (10月21日)이었다. 2.開化期間이 가장 긴(長期) 樹種이 박태기, 산수유 풀명자, 팥배나무, 무궁화, 흰풀싸리等이었다.(30日間) 3.樹木의 月別 開花比 3月: 8.4% 4月: 22.4% 5月: 33.8% 6月: 23.4% 7月: 4% 8月: 4% 9月: 2% 10月: 2% 4.樹木의 月別 結實比 5月: 1.9% 6月: 5.9% 7月: 9.6% 8月: 4% 9月: 43.7% 10月: 32% 11月: 2.9% 5.化色別比 黃色系: 40.2% 白色系:34.5% 紅色系: 17.8% 紫色系: 7.5% 6.果色別比 黃色系: 16.5% 褐色系: 43.7% 紅色系: 20.4% 靑色系: 17.5% 白色系: 1.9% 參考: 1967年度 普州地方의 氣象年報 (다음 pagre) The investigation was made into 107 Kinds of trees including “Melia a edarach var.”for the study of the characteristics on forestry resources “trees for landscape gardening”and the following four conditions was taken as the method for the investigation: 1.The blooming season 2.The fruiting season 3.Characteristics, largeness, inflorescence, floral formula, particular use (except general use) 4.Value of others (use for enjoyment and eat, etc.) e.g leaf, stem. fruit (except the flower for enjoyment). From the comparing with suchcondition as those which are based on the characteristics ofthe plant-classification itwas found out that all the following characteristics such as a)Aesthetics value at the sight. b)The month order of blooming season and the difference of color. c)The difference of the flower of kinds of trees. d)The difference of the beautiful color and the use of the fruit can be changeable by the factor of environment. The results obtained from the investigation of trees for the landscape gardening were as follows: 1.Camellia japonica L. (23, Feb.) is the earliest flowering tree and Fatsia faponisa Decen et Planch (21. Oct.) and Thea sinensis L. (26, Oct.)the latest among them. 2.The longest flowering trees(for 30days) are: Corcis chinensis Bunge. Hibiscus syriacus L. Cornus officinalis S. et Z. L. intermedia var. Japonica for. alba (Nake)Lee. Chaenomele sjaponica Sorbus alnifolia koch 3.Percentage by month order of blooming. March 8.4% July 4% April 22.4% August 4% May 33.8% September 2% June 23.4% October 2% 4.Perceneage by month orber of armorial bearing May 1.9% September 43.7% June 5.9% October 32.0% July 9.6% November 2.9% August 4.0% 5.Percentage by flower color. White line 34.5% Red line 17.8% Yellow line 40.2% Violet line 7.5% 6.Percentage by fruit color. Yellow line 16.5% Brown line 44.7% Red line 20.4% Blue line 17.5% White line 1.9%