• Title/Summary/Keyword: earring

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Effects of Initial Slug Design on the Earring of a Rectangular Battery Case During Impact Extrusion (충격압출 공정에서 초기 슬러그 디자인이 사각 배터리 케이스의 이어링에 미치는 영향 분석)

  • Lim, J. H.;Choi, S.;Chung, W. J.;Shin, J. H.;Lee, J.
    • Transactions of Materials Processing
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    • v.24 no.6
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    • pp.425-430
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    • 2015
  • In the current paper, the effects of initial slug design on the earring of an Al rectangular battery case manufactured by impact extrusion were studied. During impact extrusion, non-uniform metal flow between the long and the short sides of the battery case leads to earring, which is subsequently trimmed. Process parameters such as friction, aspect ratio of the battery case, the die shape and the forming temperature tend to induce earring because they cause greater non-uniform metal flow. Large aspect ratio of the battery case and high friction between slug and die can greatly affect the earring of a rectangular battery case. To make a rectangular battery case without earring, it is necessary to control metal flow uniformly during impact extrusion. One of the ways to reduce the earring is to control the metal flow of slug at the initial upsetting stage. To analyze the effects of the initial slug design on earring, FE analysis was conducted using DEFORM 3D. Two types of initial slug designs were evaluated where volume was removed along either the width or thickness directions. The results show that the initial slug design can be effective in adjusting the uniformity of metal flow.

The Effect of Coordination of Earring, Neckline, and Hairstyle on Image (귀걸이, 네크라인, 헤어스타일의 코디네이션이 이미지에 미치는 영향)

  • Jung, Su-Jin;Choi, Su-Koung
    • Korean Journal of Human Ecology
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    • v.18 no.2
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    • pp.535-545
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    • 2009
  • The purpose of this study is to investigate the effect of earring(nothing, small, medium, large), neckline(round, low), and hairstyle(bound, unbound) on image formation. Sets of stimulus and response scales(7 point semantic) were used as experimental materials. The stimuli were 16 pictures manipulated with the combination of earring, neckline, and hairstyle. The objects of the study were 192 female undergraduates living in Gyeongsangnam-do. The results of this study were as follows. Image factor of the stimulus was composed of 4 different components, concentration of attention, attractiveness, gracefulness, and cuteness. In the concentration of attention, earring and neckline showed independent effect. In the attractiveness, neckline showed independent effect. In the gracefulness, earring and hairstyle showed independent effect. Significant interaction effects of earring and neckline on concentration of attention, attractiveness and gracefulness were found. Interaction effects of neckline and hairstyle on cuteness were found. The study results are highly expected to be used as useful sources in developing total coordination.

A Study on the Heat shaped Earring in the Period of the Three States (삼국시대 심엽형 귀걸이 양식에 대한 연구)

  • 김문자
    • Journal of the Korean Society of Costume
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    • v.45
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    • pp.29-40
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    • 1999
  • The purpose of this study is to classify of the Heart shaped Earring in old tombs of Three Kingdom States. First Heart shaped Earring is 7 part in according to heart styles. I-A type was original style and that was influenced by scythe style. I-A II-A type was general style that was found in most of the old tombs in Kokuryo Pacijae ancient Silla Gaya. I-B II-2-A type was also found in most of the old tombs except Kokuryo. Then II-2-A type was transmitted to Japanese Heart shaped Earring. I-A, I-B, II-1, II-2-A type was general style in ancient Silla gaya. Ii-1-B, II-2-B. II-3-A type was excavated from the only Pacjae tombs and II-3-B type was excavated from Kokuryo tombs. II-3-A, II-3-B type was unique style that was found in old tombs in Kokuryo, Pacjae.

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An investigation of non-uniform metal flow during rectangular battery case using impact extrusion process (충격압출 공정을 이용한 직사각형 배터리 케이스 성형 시 불균일 금속 유동 발생 원인 고찰)

  • Lim, Jae-Hyuk;Kim, Yong-bae;Lee, Jong-sup
    • Design & Manufacturing
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    • v.10 no.2
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    • pp.24-28
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    • 2016
  • In this study, relevant to impact extrusion process of the rectangular batter case for electric vehicles, numerical and experimental analyses were conducted to reduce the earring defects induced in the unevenness of metal flow. Since the earring is caused by the non-uniform metal flow induced in the friction and aspect ratio in the bottom section. As a way to reduce the earring, variable land die concept was applied. In order to analyze numerically the complex metal flow by using commercial finite element package, DEFORM 3D, impact extrusion process was simplified in upsetting mode at bottom section and extrusion mode at land section. The impact extrusion experiments were conducted to verify the assessment of process parameter for impact extrusion. As results, variable land die which has longer longitudinal section makes reduce earring defects. In addition, it was confirmed that the effect that slug shape like dog-bone also can reduce the earring. This study is expected to be able to present the useful design guidelines for manufacturing the battery case.

Scientific Analysis of Baekje Earrings from Habjung-ri Site in Buyeo (부여 합정리 유적 출토 백제이식의 과학적 분석)

  • Cho, Hyunkyung;Jeon, Yuree;Eo, Jieun;Cho, Namchul
    • Conservation Science in Museum
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    • v.13
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    • pp.71-80
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    • 2012
  • So-hwan earring(small hoop earing) is orbicular earring that have only main hoop. In this study, So-hwan earring from Baekje tombs are analyzed scientifically and those is attempted to find the correlation between scientific results and historical constituent. Six earrings were excavated from Habjung-ri sites in Buyeo and formative features and material characteristics of them were analyzed by microscope and XRF. As a results, various toreutics about producing gold silver alloy, pressure welding and amalgam plating that existed in Baekje from Ungjin period to Sabi period.

A Study on Image perception According to Accessories - Materials and Forms of Earring - (액세서리에 따른 이미지 지각의 차이 - 귀걸이의 재료와 형태를 중심으로 -)

  • Yoon, Young-Ahe
    • Journal of the Korean Society of Fashion and Beauty
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    • v.3 no.3 s.3
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    • pp.1-10
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    • 2005
  • The objectives of this research were to find out factor of image perception about women's accessories, to test differences in image evaluation according to materials and forms, and to investigate differences in image evaluation according to total stimuli. The results of this study were as follows. First, the accessory image factor derived four categories: attractiveness, prettiness, gorgeousness, and soft. Second, in two dependent variables, material and form had no significant interaction effects on attractiveness, prettiness, gorgeousness, and soft. In main effect, there was a significant difference of attractiveness, prettiness, and gorgeousness according to form. That is, the lined types had better prettiness and gorgeousness than the attachable ones. There was a significant difference of attractiveness, prettiness, gorgeousness, and soft according to materials. That is, pearl was considered to be the most attractive and soft. Plastic was evaluated image of least fashionable and soft, gold did image of the least gorgeous. Third, the attractiveness of attachable diamond earring was evaluated the highest, and the lined plastic ones did the lowest. It was evaluated and concluded that the lined plastic ones is considered the prettiness and most gorgeous where as any earring with attachable gold earring were considered the least prettiness and gorgeous. The attachable silver or pearl earrings were considered to be projecting the softest image whereas the lined gold and attachable plastic ones the opposite.

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Experimental Determination of the Optimum Blank Shape in Rectangular Cup Drawing (사각 컵 드로잉 공정에서의 최적 블랭크 형상 결정)

  • 배원병;허병우;김호윤;이영석
    • Journal of the Korean Society for Precision Engineering
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    • v.15 no.12
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    • pp.68-71
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    • 1998
  • Rectangular deep drawing process is widely used in sheet metal forming. But there are various defects such as earring, wrinkling, tearing, etc. In order to avoid the defects, an optimum blank shape is required. But it has not been generalized to determine the optimum blank shape because deep drawing processes are involved in complex process parameters. So, it is very necessary to do research systematically about determining the optimum blank shape of deep drawing process. In this study a rectangular cup drawing test has been carried out to determine the optimum blank shape for various stainless steel sheets. From the test, a new blank model, which has no earring, is proposed.

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Fetal Sex Determination by RIA of Amniotic Fluid Testosterone and FSH (태아성별(胎兒性別)에 따른 양수중(羊水中) Testosterone과 F.S.H.의 동태(動態)에 관(關)한 연구(硏究))

  • Koh, Min-Whan;Shin, Myon-Woo
    • Clinical and Experimental Reproductive Medicine
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    • v.6 no.1_2
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    • pp.23-28
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    • 1979
  • To determine whether hormone analysis of amniotic fluid could be used for accurate determination of fetal sex, we measured testosterone(T) and follicle-stimulating hormone in 19 amniotic fluid samples. The mean T in amniotic fluid of 8 women earring male fetuses was 310 pg. per milliliter and of 11 women earring female fetuses was 150 pg. per milliliter (P<0.05${\ast}$). The mean amniotic fluid FSH of 1.16 mI.U. per milliliter for 7 women with male fetuses was over trifold lower than that for subjects with female fetuses. The mean amniotic fluid FSH of female fetuses was 3.85 mI.U. per milliliter (P<0.01${\ast}$) Measurement of T & FSH in amniotic fluid may be an adjunct method for fetal sex determination.

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A study on the Scythian Earrings

  • Kim, Moon-Ja
    • Journal of Fashion Business
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    • v.15 no.6
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    • pp.23-39
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    • 2011
  • Scythian Earrings in the Black Sea region had completely degenerated, stifled by motifs and shapes of Greek origin, retaining its representational realism and its full emotional vitality. The purpose of this study is to review and research the symbolic meaning and classifying the types of the Scythian Earrings style through the tombs bequests. The Scythian Earrings were divided into the styles according to the shape, Earring with Ends Shaped like animal's Heads, Boat-Shaped Earrings, Bird-Shaped Pendants earrings, Earrings with a Disc and a Pendant, Earrings Shaped like the Figures, Earring with the drop Pendant, Spiral Earrings. Earrings based on the boat shape enjoyed a long popularity among the Scythians. As that form became elaborated and combined with the disk-pendent, it reflected native rather than Asian or Hellenic tastes. Although Scythian earrings were produced based on the shapes of Greece earrings, they recreated these as Scythian unique style. In particular, the animal motive and the decoration have various changes. The exquisite earrings attest to the elegant taste and splendid wealth of the upper classes.