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임재규 한국중어중문학회 2024 中語中文學 Vol.0 No.95
This paper is an introductory study on Yijingyiwenshi(易經異文釋), one of the YIxue(易學) works by Li Fusun(李富孫) of the Qing Dynasty. This is a study on Yiwen(異文) of Yijing(易經). Through this study, the following conclusions were obtained. First, Yijingyiwenshi(易經異文釋) can be said to be the most systematic and comprehensive work on Yiwen(異文) of Yijing(易經) among the works of Chinese history of YIxue(易學). In other words, in the history of Chinese YIxue(易學), there is no systematic and comprehensive writing on Yiwen(異文) of Yijing(易經) that is comparable to Yijingyiwenshi(易經異文釋). Second, Yijingyiwenshi(易經異文釋) is one of the works representing ancient textual research of the Qing Dynasty among works on the history of Chinese YIxue(易學). Yijingyiwenshi(易經異文釋) meticulously researches the vast writings of the greatest archaeological scholars of the Qing Dynasty, including Hui dong(惠棟), Qiandaxin전대흔(錢大昕), and Duan yu-cai(段玉裁), to create Yijingyiwenshi(易經異文釋). The point is that it presents the most consistent interpretation of Yiwen(異文) of Yijing(易經). Meanwhile, the three characteristics of the interpretation of Yijing(易經)‘s Yiwen(異文) in Yijingyiwenshi(易經異文釋) can be cited as follows. First, in the interpretation of Yijing(易經)‘s Yiwen(異文) in Yijingyiwenshi(易經異文釋), Li Fu-sun(李富孫) mainly develops textual research focusing on Lu De-ming(陸德明), Zheng Xuan(鄭玄), Yu fan(虞翻), Xun Shuang(荀爽), and this shows the characteristics of Hanxue(漢學) in the interpretation of Yijing(易經)‘s Yiwen(異文). Second, in interpreting Yijing(易經)‘s Yiwen(異文) of Yijingyiwenshi(易經異文釋), Li Fu-sun(李富孫) not only cited Jing(經), Shi(史), Zhuan(傳), and Zhu(注), but also cited even the epigraphy of Han, Tang, and Song dynasties, which can be said to show the characteristics of Kaojuxue(考據學) in the interpretation of Yijing(易經)‘s Yiwen(異文). Third, in interpreting Yijing(易經)‘s Yiwen(異文) in Yijingyiwenshi(易經異文釋), Li Fusun(李富孫) attaches importance to the restoration of Yijing(易經)‘s Guwen(古文). This is another characteristic of the interpretation of Yijing(易經).
Fabrication and mechanical properties of Si3N4/SiC/TiAgCu multilayered nanocomposites
임재규,Do Won Seo 한양대학교 세라믹연구소 2004 Journal of Ceramic Processing Research Vol.5 No.3
Two-layered Si3N4/SiC nano-composites with 20 vol.% SiC have been fabricated by two-step sintering of a powder mixture of α-Si3N4 and carbon powder with a mean size of 13 nm, and 5 wt.% Y2O3. Nano- sized SiC particles were formed through reactions: carbon and surface SiO2 on the Si3N4 particles, and carbon and Si3N4 particles. To combine the specific advantages of nanoscale ceramics with that of metals, they are often used together within one composite component. In this study, the fabrication and mechanical properties of a nanoscale SiC layer brazed with a Ti active alloy were investigated. It was shown that, with a variation of strain rate, the joints have a bending strength of 310-380 MPa, and the deflection of the interlayer increases with increasing strain rate. The fracture types are classified into three groups; cracks grow into the metal-brazing filler layer, the ceramic-brazing filler layer or inside the ceramic.
저변형률시험법에 의한 섬유강화 복합재료의 응력부식균열에 관한 연구
임재규,최태수,Lim, Jae-Gyu,Choi, Tae-Su 대한기계학회 1996 大韓機械學會論文集A Vol.20 No.11
This paper was investigation of the stres corrosion cracking(SCC) mechanism and the properties of corrosion fracture surface of glass fiber reinforced plastics(GFRP) produced by hand lay up(HLU) method in synthetic sea water. Test material is GFRP, that was used vinylester type epoxy acrylate resin and an unsaturated polyester as the matrix and the chopped strand mat(CSM) type E-glss fiber as the reinforcement. The slow strain rate test(SSRT) was performed on dry, wet and saturated wet specimens in sea water. Here the pH concentration of synthetic sea water was 8.2 and the strain rate is 1 x $10^{-6}$($sec^{-1}$) and test temperature ranges varied from $-60^{\circ}C$ to $80^{\circ}C$. It could be confirmed the fact that wet specimens tested at a particular test temperature ranges were appeared the eviences of SCC such as con-planar, mirror and hackle zone. Moreover, SCC of GFRP in sea water was characterised by falt fracture surfaces with only small amounts of fiber pull-out, in partial.
Cr-Mo鋼 熔接熱影響部의 破壞靭性과 熔接入熱量에 관한 硏究 II
임재규,정세희 대한용접접합학회 1987 대한용접·접합학회지 Vol.5 No.2
Post weld heat treatment (PWHT) is carried out to increase the fracture toughness in heat affected zone(HAZ) and remove the residual stress. There occur some problems such as toughness decreement and stress relief cracking(SRC) in the coarse grained HAZ subjected to the effect of tempering treatment. Especially, embitterment of structure directly relates to the mode of fracture and is appeared as the difference of fracture surface, that is, grain boundary failure. Therefore, in this paper, PWHT was carried out under the stress of 0, 10, 20 and $30kg/cm^2$ to simulate residual stress in HAZ welded by heat input of 10, 30 and 40KJ/cm. Applied stress in weld HAZ during PWHT assisted precipitin of over saturated alloying element in the structure, and grain boundary failure according to welding heat input didn't almost appear at the heat input of 10 KJ/cm, but it appeared from being the applied stress of $30kg/cm^2$ at $30KJ/cm and 20kg/mm^2$ at 40KJ/cm.