시험조건과 고강도콘크리트의 압축강도 관계에 관한 실험적 연구

진영길,이용수,김광서,Chin, Young-Gil,Lee, Yong-Su,Kim, Kwang-Seo 한국건축시공학회 2002 한국건축시공학회지 Vol.2 No.2

The strength and durability of concrete are affected by various factors such as the quality of material, mixing ratio, construction, the method of cure, time elapsed. the condition of test and etc., it is very difficult to pre-estimate the strength of concrete with the use of experimental specimen. The domestic standard of specimen cylindrical type and its sizes are both l0cm$\times$20cm and 15cm$\times$30cm, which are prescribed in KS F2405, and the loading speed is prescribed to test with 2~3kgf/$\textrm{cm}^2$ per second. The loading speed should have great effect on the compressive strength, but in reality in the construction site sometimes the loading speed is applied so dubiously that the value of the compressive strength can be unreliable. And the cross sectional area of a specimen should be level and smooth, otherwise it can be broken at a lower stress than the real strength through the eccentric or intensive working of the load. Capping should be carried out in order to measure the strength correctly. And used for capping are various materials such as capping compound, cement glue, plaster, mechanical grinding and etc. In this study, therefore, I have carried out an experiment on the relationship among the loading speed, the ratio of height to diameter of specimen, the method of capping, and the compressive strength, for the efficient quality control of concrete structures. So this study has been purposed to provide some basic data that can be used effectively at construction sites.

아크릴 섬유의 아미도옥심화에 관한 연구 (Ⅰ)

진영길(Young Gil Chin),김규범(Kyu Beom Kim) 한국염색가공학회 1996 韓國染色加工學會誌 Vol.8 No.6

자카드직물의 문양표현에 영향을 미치는 의장(design)방법 연구

송경자(Song Gyeong-Ja),진영길(Chin Young-Gil) 한국복식학회 2005 服飾 Vol.55 No.4

The purpose of this study was to research the design methods to express jacquard design using CAD. For this study, two design patterns were divided; in addition, each design pattern is applied to two different weaving types, single woven fabric and double well cloths. As a result, 16 samples were produced by applying 4 design methods (warp shrunk as half size design/weft shrunk as half size design - A, warp shrunk as half size design/weft original size design - B, warp original size design/weft shrunk as half size design - C, warp original size design/weft original size design - D) to the two design patterns with the two weaving types. The result of this study can be summarized as follows. 1. The most delicate design method was Method D. However, Method B which took half the time less than Method D was almost as delicate as the Method D on the surface. 2. Method B was judged as a considerably efficient method for time and cost. 3. Method D was considered as most suitable for elaborate parts and delicate lines. However, it was considered uneconomical since it took the longest time. 4. Mettled A took 2.5 times less time than Method D. Therefore, Method A was more applicable to producing high density design. 5. Method C is not considered as a useful method as it showed rough surface and took long time by applying high design zoom except intentional design.

그라프트 가공 견직물의 力學特性과 태의 分析硏究

金圭範(Kyu Beom Kim),陳英吉(Young Gil Chin) 한국염색가공학회 1996 韓國染色加工學會誌 Vol.8 No.3

Aspergillus niger균에 대한 내의류 재료의 항균효과

이송자(Song-Ja Lee),김윤홍(Youn-Houng Kim),진영길(Young-Gil Chin),이수정(Su-Jeong Lee) 한국생활환경학회 1995 한국생활환경학회지 Vol.2 No.3

비닐 모노머에의 의한 염색견의 반응

진영길 慶尙大學校 기초과학연구소 1992 基礎科學硏究所報 Vol.8 No.-

In order to study the reaction of vinyl monomers onto the silk fibers, some reactive dyes, such as C.I.Reactive Blue 19, C.I.Reactive Red 6, and C.I.Reactive Red 120 were applied to silk dyeing. The dyed silk fiber was grafted with MAA(Methacrylamide) and HEMA(2-Hydroxyethyl-methacrylate). The grafting yield was evaluated by weighting and the change of dyeing property is investigated by shade variation. The results obtained are as follows; 1. In the MAA graft polymerization the weight increase of dyed silk samples indicated the presence of less polymer than un-dyed silk samples. However, the dyed silk samples with Reactive Blue 19 was not shown the homogeneous distribution of polymer onto the fiber. 2. In the HEMA graft polymerization the weight increase of dyed silk samples with Reactive Red 6 was higher value, the Reactive Red 120 nearly same value, and the Reactive Blue 19 was less value than that of undyed silk samples. 3. In the processing of graft polymerization the desorption of dyes from fiber was not observed and the shade variation was nearly not observed in accordance with the graft polymerization.

混紡織物의 方學的 性質에 의한 태의 硏究

陳英吉 慶尙大學校 1985 論文集 Vol.24 No.1

Fabric handles are evaluated through mechanical properties to investigate hand factors and clothing performances in connection with polyester-wool blended fabrics and also its variations on heat-setting. In this study all the measurements are examined by Kawabata's evaluation system for fabrics and hand values are transformed from basic mechanical properties. Results obtained are as follows. The characteristics of blended fabrics are determined on surface properties rather than basic mechanical properties such as tensile, bending, shearing, and compression. Clothing performances are showed relatively soft, springy, and drape to surface performance. The handles of blended fabrics are dominated by SHARI (crisp ness) and FUKURAMI (fullness and softness). In variations of the handles on heat-setting, SHARI and THV (Total Hand Value) are increased in the case that are dried at 80˚C, but in other cases, FUKURAMI are only increased with increasing heat-setting temperature and other hand factors, such as KOSHI(stiffness), HARI(anti-drape stiffness), and SHARI trend to be gradually reduced with THV.

하이드록실 아민으로 처리한 아크릴 섬유의 중금속 흡착특성(Ⅱ) : 구리(Ⅱ) 흡착과 그 키일레이트의 성질 Properties of Cu(Ⅱ) Adsorption and its Chelates

진영길,최석철 한국의류학회 1989 한국의류학회지 Vol.13 No.2

In order to investigate a practical application of fibrous adsorbents to heavy metal ions, amidoxime fibers, as a particular class of solid chelate agents, were prepared by hydroxylamine treatment for acrylic fibers in a recipe of neutralization. Among the important problems from plant effluents are toxic concentrations of heavy metals such as copper. Accordingly, the properties of Cu (Ⅱ) adsorption and its chelates were studied. The results obtained are as follows; The fibrous adsorbents have the property of increasing the swelling volumes by amidoximation. The adsorption of Cu (Ⅱ) ion is characterized by an endothermic reaction, which is estimated as the plus values in the enthalpy change (AH=1.30 Kcal/mol. and 3.14 Kcal/mol.). The Cu (Ⅱ) ions are adsorbed in the range of pH 3∼8 and the maximum adsorptions are occurred about pH 8. Owing to the anions (NO_3-,Cl-) of copper salts, amidoxime fibers form 1:1 and 2:1 (ligand:metal) chelating complexes with Cu (Ⅱ). The nitrate anion chelates to amide I (NH) of amidoxime groups and the chlorine anion does to nitrosyl (NO). These effects relate to the crystallization of the complex and the thermal property.

Poly ethylene terephthalate의 저온결정화에 의한 미세구조의 변화

김동건,진영길 경상대학교 농업생명과학연구원 2002 농업생명과학연구 Vol.36 No.4

용융상태로부터 급랭한 PET의 무정형 상태는 용융온도에 크게 영향을 받아 용융온도가 낮은 경우에는 랜덤한 분자쇄 배열보다 결정화가 용이한 무정형구조를 나타내었으며 높은 용융온도에서 급랭한 경우에도 100℃의 저온 열처리에 의해 결정화시키면 부분적으로 분자쇄의 재배열이 일어나 결정화가 용이한 무정형구조로 변화하여 가는 것을 알 수 있었다. 또한, 저온결정화에 의한 발열피크가 열처리에 의해 저온쪽으로 이동하는 현상도 이러한 열처리에 의해 질서가 상대적으로 높은 무정형구조가 되기 때문으로 생각된다. 무정형 PET의 저온열처리에 의한 결정화의 과정은 무정형구조가 부분적 또는 단계적으로 질서화됨으로써 결정화가 이루어진다고 생각된다. Preparing amorphous PET films which were quenched after being melted at various temperature, we examined a change of micro structure by the cold-crystallization using DSC, XRD and TEM. The amorphous PET films quenched from the melting condition were largely influenced by the melting temperature. The PET films showed the amorphous structure that is easier to crystallize than the random molecular chain arrangement under the low melting temperature. Also, in the case of high melting temperature, the PET films were changed into the amorphous structure that is easy to crystallize by the portional rearrangement of molecular chain as a result of the 100 degree low annealing treatment. The phenomenon, the exothermic peaks by"the cold-crystallization move to the low temperature owing to the annealing treatment, can be also explained by the well-ordered amorphous structure by this annealing treatment. A crystallization process of the amorphous PET films by the low temperature annealing treatment is accomplished by the portional and gradual order of amorphous structure.

출토유물에 수착되어진 직물의 재질특성

김동건,진영길 한국의류산업학회 2003 한국의류산업학회지 Vol.5 No.3

Some of historical textiles were analyzed to identify the imprinted textures on the metal remains of Ilaengveup(a horse strap pendant) and Doja (a knife), which were excavated in the ruins of Hwangsung-dung, Kyungju city in the fifth century and textiles imprinted on the human bones that were excavated in the Pungnac 4th Area, Natnyan6i county in the sixteenth century. The results analyzed are as follows ; It was confirmed that the imprinted textures of Haengyeup and Doja are white ramie since the structural characteristics of cellulosic hast fibers, partially pn ected long oval cross sections with large lumens and the imprinted textures of human bones are silk fabrics since the triangular cross sections of fibroin is showed. All of the textiles were designed in plain weaves. In the case of weaving yarns, the warp threads were thicker than the weft threads, that is, the imprinted textures of Haengyeup were measured by 1.35 mm for warp and 1.21 mm for weft, and the Doja by 1.16mm for warp and 1.11 mm for weft, In connection with the direction of the yarn twist, the Z-twist were observed in the imprinted textures of human bones, whereas it presented the S-twist in the case of Haengyeup and Doja. The warp yarns were mostly harder twisted than the weft yarns on the amounts of twist, that is, it was observed that the case of Haengyeup were amounted to 0.33 twists per centimeter for warp yarns and 0.25 twists per centimeter for weft yarns. Also it was showed 0.32 twists per centimeter for warp yarns and 0.26 twists per centimeter in the case of the textures of human bones. On the fabric counts, it was showed that the finer the yarns the higher the densities since it were 4.3x5.1 threads per sqaure centimeters and 7.6x7.1 threads per sqaure centimeters each in the case of Haengyeup and Doja, whereas it was 18.2x33.7 threads per sqaure centimeters in the case of the textures of human bones.