• Transactions of Materials Processing
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• v.18 no.1
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• pp.73-79
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• 2009

In order to investigate the formability of friction stir welded(FSW) tailor welded blanks(TWB) with respect to the base material's directional combination, aluminum alloy AA6111-T4 sheets were welded with three different conjoining types: RD-RD, TD-RD and TD-TD. Here, RD and TD represent rolling and transverse directions, respectively. For experimental formability study, three tests with gradual complexity were performed: the simple tension test with various weld line directions for uni-axial elongation, the hemisphere dome stretching test for biaxial stretching and the cylindrical cup deep drawing test. As a result, all three forming tests showed that RD-RD type samples exhibited the best formability, while TD-TD type sheets showed the least formability performance.

• Journal of the Korean Society of Clothing and Textiles
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• v.31 no.5 s.164
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• pp.729-741
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• 2007

In order to examine the characteristics of brassiere products for the 1924 generation brands on the market and grasp problems, we selected three 'comparative brassieres', each one from among the 1924 underwear brands with the highest recognition and sales profit, and then designed a 'sample brassiere' pattern(75A) with a similar shape to the comparative brassieres. We set up the "New Cup Grading Rule" with a view of reflecting the wearing effect that was varied according to cup sizes, graded the sizes of 75AA and 75B with this method, and made the sample brassieres in three sizes. We conducted the wearing evaluation and body measurements of 9 subjects after analyzing the patterns and characteristics of the sample brassieres and three comparative brassieres. As a result of the wearing evaluation, the sample and comparative brassiere 2, the dimensions and shapes were appropriate for the 1924 generation consumers and expressed an overall natural silhouette, showed satisfactory results in the entire evaluation questions. On the other hand, the comparative brassiere 1 and 3 that tended toward making a big change in the physical characteristics got unsatisfactory evaluations in the dimensions of the cups, clothing pressure, and bust silhouette. As a result of observing the variation in body dimensions by body measurements when nude and when wearing each brassiere and then summing it up with the score of the wearing evaluation, it was proven that too much change in body shape can create a negative image by upsetting the balance of the whole silhouette. Therefore, it is desirable to develop brassiere products with proper dimensions and clothing pressure that can make a physical change that harmonizes the overall bust silhouette and the position and shape of the breasts.

• Journal of Fashion Business
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• v.5 no.4
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• pp.144-157
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• 2001

The purpose of this study was to research on breast shape and size to suggest a brassiere sizing chart for elderly women. For this purpose 90 elderly women aged between 55 and 69 were sampled at random to review their breast types by age group, and thereby, suggest the basic measurements and production ratio of each brassiere size in reference to KS K 0070: 1999. The collected measurement data were processed statistically using the SPSS PC/WIN program for technical statistical analysis. The results of this study can be summarized as follows; 1. Analysis of Breast Measurements To find out difference among age groups, the 90 subjects were grouped into three(Group 1 ; aged 55 to 59, Group 2 ; aged 60 to 64, Group 3 ; aged 65 to 69). The results of the comparative analysis of anthropometric data from three groups show that getting older;- Various length measurements related to the drooping degree of breast were increased. It was found that the older group in their 65-69's had more drooping breasts than their 55-59's or 60-64's counterparts. Such findings suggests that older women's drooping can be corrected by a brassiere which serves to support the breasts. 2. Suggestions on a Brassiere Sizing For the basic measurements of brassiere parts for the elderly women, the correlation between underchest circumferences and cup sizes were analyzed. 3% or higher occurrences among the whole sample elderly women were included in the brassiere sizes. thus, the under-chest measurements were set at four intervals from 75 to 95, while the cup measurements were determined also at four intervals from "AAA" to "B" sizes. The resultant 6 sizes excluding the least frequent occurrences covered 73.2% of the sample elderly women actual breast sizes. As a consequence of reviewing the production ratio of each brassiere size for the women, it was found that the brassiere size of highest production ratio was "85A" (17.4%), followed by 80A (14.5%), 85AA 90A (10.1%) and 75A (8.7%) in their order.

• Journal of the Korean Society of Clothing and Textiles
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• v.30 no.7 s.155
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• pp.1146-1159
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• 2006

The purpose of this study was to offer body suit sizing system for young women aged 18-24. Many anthropometric measurements and other related data form 418 subjects were analyzed by various statistical methods. As a result of cluster analysis, we categorized somatotypes into 3 types: H-type, A-type, N-type as the most common. Subjects was covered 86.5% by KS body suit sizing system and 33.2% by body suit company. So we considered to produce AAA, AA cup size and small size body suit for raising the coverage. As size distribution by cluster analysis, H-type was mainly distributed ${70{\sim}85(AAA{\sim}D)}$ and M, L's hip size. A-type was mostly was ranged ${70{\sim}85(A{\sim}C)}$ and S, M size. N-type was widely showed ${65{\sim}85(AAA{\sim}I)}$ and S, M, L's hip size. Accordingly, it is reasonable to consider size distribution and physical characteristics by these figure types when suggesting sizing system as well as design and production.

• Journal of the Korean Society of Clothing and Textiles
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• v.31 no.4 s.163
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• pp.633-645
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• 2007

The purpose of this study is to develop brassiere patterns which are both fitting and functional for women aged 19 to 24(the 1924 generation). We suggested a 'size chart for body measurements' for constructing basic brassiere patterns with six sizes of '70, 75', 'AA, A, B cups', which are used most frequently by the 1924 generation consumers. The scope of research was in reference to the statistical analysis results of the Size Korea(2004) body measurements and the results of the data from the preceding research. The 'drafting method for constructing basic brassiere patterns for the 1924 generation consumers' was completed by selecting a total of 18 subjects, 3 for each six sizes in the scope of research, and three wearing tests were carried out with the subjects. We compiled one brassiere pattern in six sizes obtained with the drafting method of constructing a basic brassiere pattern on another by block pattern in order to observe the phase of change in dimensions and shapes of paper pattern. The result was converted into the variations of a x-axis and a y-axis, and we suggested 'Size Grading Rule' and 'Cup Grading Rule' for the basic brassiere patterns. As the results of the wearing evaluation of the basic brassieres and measuring the variation in body dimensions by wearing brassieres, the dimensions and shapes of the basic brassieres suggested in this research proved to be fitting and to have a wearing effect that brings together and supports the breasts.