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슬라이버의 압축특성에 관한 연구 -슬라이버 집합체의 동적압축 특성-
이재곤,이춘길 한국섬유공학회 1986 한국섬유공학회지 Vol.23 No.3
For the purpose of applying the dynamic characteristics of sliver to the automatic control of sliver linear density in the spinning process, the unidirectionally oriented sliver masses were made and used to perform the experiments of compressional load transfer for the dynamic compression. The following dynamic characteristic behaviors of sliver masses were made clear through this study. It was shown that the phase angle of the system was proportionally increased with the increase of input strain frequency so that the dynamic compressional behavior was able to be interpreted as lst order control element of process analysis. Also it was shown that the phase angle was increased with the decrease of dynamic compression modulus when the specific volume of silver masses were increased. The dynamic compression moduli were decreased in the order of polyester, wool, and cotton sliver masses.
이재곤 관광경영학회 2003 관광경영연구 Vol.18 No.-
These days cruise commodity is a phenomenon of the diversification of wants for the increase of the consumer's income as well as the increase of their leisure. So, in other to success in positively coping with the environmental change through the effective marketing sales promotion activities of cruise business, the detail purpose of researches in accomplishing it as well as the searching it measures as a developing commodity. Data of this study were collected a survey on residential tourists at Seoul and Kyonggi province. And based on the result a statistic software, SAS was used to perform the relations analysis for frequency, t-test and ANOVA.
이재곤,강태진,박일규,Lee, Jae-Gon,Gang, Tae-Jin,Park, Il-Gyu 한국섬유공학회 1989 한국섬유공학회지 Vol.26 No.4
The geometrical parameters of spun yarn such as orientation angle, radial position of fiber and length of fiber were measured using the tracer fiber technique and correlations between them were investigated at five different numbers of twist of yarns, i.e., 420, 470, 570, 770, 970 tpm. Length of fiber(L) increased with the value of orientation angle($\theta$) of fiber. However, there were no correlation between length of fiber and radial position of fiber(r/R) as well as between orientation angle of fiber and radial position of fiber. Not only the orientation angle but also its relative frequency of fibers were measured using the tracer fiber technique. Their frequency curves were followed normal distribution and the shape of curves were shifted to higher orientation angle with number of twist of yarns. The mean value of orientation angle of fiber at each radial position showed an increase with the radial position of fiber. The initial tensile modulus of spun yarn determined experimentally showed lower value than theoretically determined for the yarns with low twist levels of 420, 470, 570 tpm. These results can be explained by the slippage between fibers.