In the measurement of dynamic drape coefficient of fabrics, mean correlation coefficient between measured data and regressed values of revolving drape increase coefficient ; D_r, shows the highest value if the straight region of 2 nd step is decided from 50 to 130 rpm. Standard deviation of the correlation coefficient becomes the smallest value in this region. Therefore, the revolving drape increase coefficient could be defined as the slope of dynamic drape coefficient versus revolution speed curves in the region between 50 and 130 rpm. Relationship between D_r, revolving drape coefficient at 200 rpm ; D₂₀₀, and mechanical parameters of bending and shearing properties were studied precisely and the regression equations were derived from those mechanical parameters. It was shown clearly that D_r and D₂₀₀ are controlled predominantly by shearing property rather than bending property as it has the effect on conventional static drape coefficient.

抄録全体を表示

In the first and the second reports of this study, we discussed about “Sense of Impropriety” of clothes which felt in each aggregation of a random and a group arrangement of people composed of two clothes of different kind, through a sensory evaluation experiment by dolls model. In this report, we examined the sense of impropriety of clothes concerning each random arrangement of people with a “Place”. As to the experiment method, we took the photographs of places and dolls into a personal computer, and made synthetic photographs, and carried on experiments the sensory evaluation concerning “Situations” of simulation . As a result, there is a positive effect for the number between a number of dolls as stimulus and the sense of impropriety as well as previous section of this report when the “Place” is added . Next, in comparison with the result of the sense of impropriety of the random arrangement of people in a “Non-place”, there is the clothes which the sense of impropriety becomes high or low depending on being the “Place”, and especially the sense of impropriety for the kimono becomes high. And, when the characteristics of the clothes combination are opposites, the position of evaluation about same “Place” becomes contrastive it among four places. Moreover, with respect to the same clothes, the greatest difference of evaluation for four situations varies according to the combination of clothes. In conclusion, it was found that the sense of impropriety of situation with the “Place” was decided by the number of the aggregation, the kind of places and clothes, and the combination of them .

抄録全体を表示

Due to the strong demand from the users, high-speed winders today are equipped with the long spindles supporting the small diameter bobbins. These spindles are specially designed in the way that the characteristic vibration frequency and rotation frequency are not synchronized during the process of winding threads. It is impossible, however, to design a spindle that never synchronizes the characteristic vibration frequency and rotation frequency anytime between the time the spindle starts and the time it reaches the initial winding stage of highspeed rotation : Therefore, the “winding range” is generally defined as the range after passing the first and the second characteristic vibration frequency up to the third characteristic vibration frequency. The speed of a winder is conditioned on the weight imbalance of the spindle and the third characteristic vibration frequency. In order to increase the winding speed, therefore, it is important to eliminate the imbalance as well as to increase the third characteristic vibration frequency. This research has analyzed (1) the technique that fixes the imbalance in order to rotate a long spindle quietly during the entire winding process, (2) the vibration mode that is important in improving the imbalance by utilizing the vibration modal analysis methods, and (3) the various structural conditions which affects the third characteristic vibration frequency.

抄録全体を表示