• Title/Summary/Keyword: inner frame

Search Result 171, Processing Time 0.023 seconds

Study of Examples for Air Bag Non-deployment Including Rear Collision and Failure Phenomenon by Damage of Control Parts in Vehicle Air Bag (자동차 에어백의 제어부품 불량에 의한 고장현상 및 후방 추돌에 관련된 에어백 미전개에 대한 사례 연구)

  • Lee, Il Kwon;Kim, Young Gyu;Moon, Hak Hook
    • Journal of the Korean Institute of Gas
    • /
    • v.16 no.6
    • /
    • pp.102-106
    • /
    • 2012
  • The purpose of this paper is to study the failure cases in relation to system of Air Bag in vehicle happened in the field. In the first example, it was separated the soldering parts connected the wire pin between air bag module and clock spring of air bag. Whenever the pin shake by the car's vibration, the driver verified the malfunction phenomenon appeared air bag warning lamp on instrument panel in front of driver's seat. in car inside room. The second example, it verified the warning lamp lighting phenomenon of air bag by produced the circuit plate non-contacting of single an element in air bag electronic control unit. The third example, it verified the light of air bag warning indicator lamp by separated with soldering parts connecting inner pin and resistance terminal of seat belt pretensioner using passenger seat. The fourth example, when the passenger car crash a back of truck, the former bumper get jammed under the latter as the roof height of car low less than that. Therefore, the impact of Car's collision verified that don't transfer with body frame of vehicle because of no attachment impact sensor in it.

Review of Failure Mechanisms on the Semiconductor Devices under Electromagnetic Pulses (고출력전자기파에 의한 반도체부품의 고장메커니즘 고찰)

  • Kim, Dongshin;Koo, Yong-Sung;Kim, Ju-Hee;Kang, Soyeon;Oh, Wonwook;Chan, Sung-Il
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.18 no.6
    • /
    • pp.37-43
    • /
    • 2017
  • This review investigates the basic principle of physical interactions and failure mechanisms introduced in the materials and inner parts of semiconducting components under electromagnetic pulses (EMPs). The transfer process of EMPs at the semiconducting component level can be explained based on three layer structures (air, dielectric, and conductor layers). The theoretically absorbed energy can be predicted by the complex reflection coefficient. The main failure mechanisms of semiconductor components are also described based on the Joule heating energy generated by the coupling between materials and the applied EMPs. Breakdown of the P-N junction, burnout of the circuit pattern in the semiconductor chip, and damage to connecting wires between the lead frame and semiconducting chips can result from dielectric heating and eddy current loss due to electric and magnetic fields. To summarize, the EMPs transferred to the semiconductor components interact with the chip material in a semiconductor, and dipolar polarization and ionic conduction happen at the same time. Destruction of the P-N junction can result from excessive reverse voltage. Further EMP research at the semiconducting component level is needed to improve the reliability and susceptibility of electric and electronic systems.

Characteristic of Buckling and Ultimate Strength of the Perforated Stiffened Plate (유공보강판의 좌굴 및 극한강도 특성에 관한 연구)

  • Park Joo-Shin;Ko Jae-Yong;Oh Kyoung-Gun
    • Journal of Navigation and Port Research
    • /
    • v.30 no.6 s.112
    • /
    • pp.439-446
    • /
    • 2006
  • In ship structures many of the structural plates have cutouts, for example, at inner bottom structure, girder, upper deck hatch, floor and dia-frame etc. In the case where a plate has a cutout it experiences reduced buckling and ultimate strength and at the same time the in-plane stress under compressive load produced by hull girder bending will be redistributed In general, actual ship structure adopted reinforcement of stiffener around the cutout in order to preventing from buckling so it need to examine a buckling and ultimate strength behaviour considering a cutout because In many ship yards used class rule for calculating buckling strength but it is difficult to evaluate perforate stiffened plate with random size. In the present paper, we investigated several kinds of perforated stiffened model from actual ship and then was performed finite element series analysis varying the cutout ratio, web height, thickness and type of cross-section using commercial FEA program(ANSYS) under compressive load.

A Study on the Visual Style of Animation Documentary Genre (애니메이션 다큐멘터리의 시각적 스타일에 관한 연구)

  • Jung, Hye-kyung;Kim, Hye-kyung
    • Cartoon and Animation Studies
    • /
    • s.42
    • /
    • pp.25-52
    • /
    • 2016
  • Animation documentary is a hybrid genre that is newly highlighted with opposite properties. The actual world is reproduced with an unrealistic method in documentary aspect, but the objectivity of documentaries cannot be guaranteed as the boundary of actual pictures and digital images has become ambiguous. As the animation documentary by Ari Folman succeeded in 2008, the focus of this study is on 'how can fictional animations prove the authenticity of documentaries?' in which the study is mainly conducted in documentary aspect. For this, the researcher considers visual style research has important role in understanding and developing a new video genre, and asserts the necessity of research on reproduction image that is produced by the characteristics of animation which is produced in frame units. This paper has contents on the visual style of animation documentaries with pictorial reproduction methods in which animation images were classified into 3 styles based on previous research on animation documentary style. Visual styles are classified into actual image that is based on similarity with reality to deliver objective facts, image that is transformed through emphasis and omission which are factors of animations, and surrealistic image that reproduces non-visual regions such as illusions and the inner side of characters. Through this study that analyzes visual style types and characteristics, animation documentaries are expected to position as a hybrid genre that illustrates reality with a new method instead of being included in the existing reproduction method of documentaries.

Studies on Plywood Treated Fire-Retardant - III. The Fire-Retardant Degree of Monoammonium Phosphate Treated Plywood (합판(合板)의 내화처리(耐火處理)에 관(關)한 연구(硏究) - III. 제1인산(第一燐酸)암모늄처리합판(處理合板)의 내화도(耐火度))

  • Kim, Jong-Man
    • Journal of the Korean Wood Science and Technology
    • /
    • v.14 no.4
    • /
    • pp.21-28
    • /
    • 1986
  • Plywood used for construction as a decorative inner material is inflammable and can fire accident, causing destruction of human life and property. In this study, 3.5mm Kapur plywoods were soaked in the 23% monoammonium phosphate solutions by cold soaking method 3, 6, 9hrs and hot-cold bath method for 3/3hrs, and redrying was carried out by press-drying at the platen temperature of 110, 130, 160, 180$^{\circ}C$, and then fire test was carried out to investigate burning point, flame exhausted length, frame spread length, back side carbonized area and weight loss. The results are as follows; 1. In cold soaking method for 3, 6, 9hrs. retentions of monoammonium phosphate were 0.377, 0.448, 0.498kg/(30cm)$^3$ respectively, and in hot-cold bath method for 3/3hrs, the retention was 1.331kg(30cm)$^3$ that exceeded the minimum retention 1.124kg/(30cm)$^3$. 2. Correlation coefficients among the variable were shown in table 2. From the table, it could be recognized that there were close negative correlations between the treatment and burning point, flame spread length, back side carbonized area, flame exhausted time and weight loss, and there was negative correlation between treating time and back side carbonized area, but there was positive correlation between platen temperature and burning point. 3. From table 3, it can be observed that there were highly significant differences for burning point, flame spread length, flame exhausted time, back side carhonized area, weight loss between treatments. And in 2-way interactions, there were also highly significant for burning point, flame spread length, flame exhausted time, weight loss between time x treatment. 4. It was observed that burning point, flame exhausted time, flame spread length, back side carbonized area, and weight loss in fire-retardant treated plywood were the best effects in fire-retardant treated plywood, water treated plywood and nontreated plywood. In conclusion, I can estimate that absorbed chemical contents by hot-cold bath method for 3/3hrs, have a lot of effects on fire-retardant factors such as burning point, flame spread length, flame exhausted time, backside carbonized area and weight loss, but platen temperatures have a little effects on the fire factors.

  • PDF

The Narrative Structure and Musical Number's Dramatic Function in Musical "Ah! My Goddess" (뮤지컬 <여신님이 보고 계셔>의 서사 구조와 뮤지컬 넘버의 극적 기능)

  • Shin, Sa-Bin;Lee, Woo-Chang
    • The Journal of the Korea Contents Association
    • /
    • v.14 no.3
    • /
    • pp.113-124
    • /
    • 2014
  • Ah! My Goddess has impressive narrative structure including a "narrative as a discourse," a "narrative as a story" and a "narrative by narrator": in a narrative as a discourse, North and South Korean soldiers make friendship; in a narrative by a narrator, main characters (including Sun-ho, Seok-gu, Ju-hwa, Chang-seop and Dong-hyeon) appear in the outer story and narrate the inner story of characters (including Dong-hyeon, Goddess and Seok-gu) within the frame of a play within a play; and in a narrative as a story, reality and fantasy intersect by the appearance of the "Goddess." This narrative structure contributes largely to 1) the character formation of space, 2) the strategic minimization of the stage, 3) the multiplicity of main characters, 4) the repetition of similar life story, and 5) the flexible change of a point of view. And the musical number serves as dramatic functions such as 1) pursuing the multiplicity of characters, 2) maximizing the effect of the expression of tragic feelings, 3) drawing audience's interest by irony and fantasy, 4) evoking the nostalgia for delicate feelings and pure wishes, and 5) ordinary female characters' playing the role of healing and salvation, thereby contributing to the reconstruction of reality and the style of fantasy.

Analysis on Oh, hein-kuhn's Portrait Photograph (오형근 초상사진 분석)

  • Kim, Ji-Young
    • The Journal of the Korea Contents Association
    • /
    • v.14 no.3
    • /
    • pp.103-112
    • /
    • 2014
  • Oh, hein-kuhn is a representative portrait photographer in Korea. His works, , , , which treated portraits of women are a bit different from those of the past that described the appearance of characters. The artist expressed the figure of inner side that conflicts and feels uneasy between 'family and society' and 'child and woman' along with the look of character. That is, he included specific aura which the whole of aunts and girls' group radiates by showing similar photos repeatedly, that we can be aware of 'aunt' and 'girl' by seeing them. The important technique of Oh, hein-kuhn's Portrait Photograph is 'repetition' of image. The artist delivers the meaning of the photo by looking at the character upright in the front and showing photos with similar frame repeatedly. Such form and content of the work as this might feel a bit boring, since it's very simple just like identification picture. However, the photos in the frames which do not move in the fixed position can deliver the meaning of work more clearly rather than the image which expresses flowing time and moving space, we can grasp the message that the artist intends to deliver rather quickly. In the environment of photograph production mainly with image transformation, Oh, hein-kuhn's works of authentic original work method definitely stand forth. Through the portraits of aunts and girls, the artist tells an aspect of our society and we reconfirm the reality through the portraits made by him.

A Study on the Androgynous Expressed in Contemporary Fashion (현대 패션에 나타난 앤드로지너스에 관한 연구)

  • 김경옥;금기숙
    • Journal of the Korean Society of Costume
    • /
    • v.36
    • /
    • pp.239-262
    • /
    • 1998
  • The pursuit of freedom by the individual--desire to be liberated from all forms of restrictions-- is one of the defining character-istic of the modern society. As costume is, in part, a product of the spirit of the times, it was only natural that this desire for freedom would find its expression in modern costume as well. Among various forms of restrictions, differentiaton by sex has placed one of the most significant binding influences on individual behavior. From early times, the dichotomous division by sex was incorporated into the disign of costume, and the traditional differestriction of costume by sex imposed a significant restriction on the background,“the modern androhynous look”was born as a by-product of the sexual liberation movement in the second half of the 20th century, based on the concept of the individual as a complete human being rather than as a member exclusively of either the male or the female sex. This paper seeks to examine the androgynous look within a coherent theoretical frame-work, and explore new design possibilities by analyzing and understanding the visual characteristics of the androgynous look. In addition, this paper seeks to define the functional aspects of the androgynous look based on the premise that costume is an embodiment of the spirit of the times. As for research methodology, both theoretical and historical methods are employed. Through a theoretical examination of historical documents, the meaning of the androgynous look is explored from various angles, and order to examine its place in modern fashion, an-drogynous styles are categorized and system atically analyzed. The main findings of the paper can be summarized as follows : 1. Androgyny is a compound word consisting of“andro-”(meaning man) and“gyn-”(meaning woman). In modern times, this word has been associated with the socio-cultural aspect of gender rather than the physical or physiological aspect with the pshchological characteristics of the male and female sexes. Androgynous styles also appear in fashion and general arts such as drama, film, dance, and music. In fashion, the androgynous look, represented by the visual superimposition of “masculine”and “faminine”elements, has emerged as a major element of the 20th-century costume, and has gained broad acceptance among those free spirits wishing to be liberated from the conventional conceptions of male clothing, and the unisex look. 3. The androgynous look in modern fashion reflects the spirit of the 20th century society and culture, and performs various functions as follows : expression of fun, change in gender roles, expression of the inner consciousness, and pursuit of the ideal human type.

  • PDF

Multistable Microactuators Functioning on the Basis of Electromagnetic Lorentz Force: Nonlinear Structural and Electrothermal Analyses (전자기 로렌츠력을 이용한 다중안정성 마이크로 액추에이터의 비선형 구조 및 전기-열 해석)

  • Han, Jeong-Sam
    • Transactions of the Korean Society of Mechanical Engineers A
    • /
    • v.34 no.8
    • /
    • pp.1119-1127
    • /
    • 2010
  • In this paper, the design and nonlinear simulation of a multistable electromagnetic microactuator, which provides four stable equilibrium positions within its operating range, have been discussed. Quadstable actuator motion has been made possible by using both X- and Y-directional bistable structures with snapping curved beams. Two pairs of the curved beams are attached to an inner frame in both X- and Y-directions to realize independent bistable behavior in each direction. For the actuation of the actuator at the micrometer scale, an electromagnetic actuation method in which Lorentz force is taken into consideration was used. By using this method, micrometer-stroke quadstability in a plane parallel to a substrate was possible. The feasibility of designing an actuator that can realize quadstable motion by using the electromagnetic actuation method has been thoroughly clarified by performing nonlinear static and dynamic analyses and electrothermal coupled-field analysis of the multistable microactuator.

Confirmation of the Dose Distribution by Stereotactic Radiosurgery Technique with a Multi-purpose Phantom (다용도 팬톰에서 정위방사선수술기법의 선량 정확도 확인)

  • Yoo Hyung Jun;Kim Il Han;Ha Sung Whan;Park Charn Il;Hur Sun Nyung;Kang Wee-Saing
    • Radiation Oncology Journal
    • /
    • v.20 no.2
    • /
    • pp.179-185
    • /
    • 2002
  • Purpose : For the purpose of quality assurance of self-developed stereotactic radiosurgery system, a multi-purpose phantom was fabricated, and accuracy of radiation dose distribution during radiosurgery was measured using this phantom. Materials and Methods : A farmer chamber, a 0.125 cc ion chamber and a diode detector were used for the dosimetry. Six MV x-ray from a linear accelerator (CL2100C, Varian) with stereotactic radiosurgery technique (Green Knife) was used, and multi-purpose phantom was attached to a stereotactic frame (Fisher type). Dosimetry was done by combinations of locations of the detectors in the phantom, fixed or arc beams, gantry angles $(20^{\circ}\~100^{\circ})$, and size of the circular tertiary collimators (inner diameters of $10\~40\;mm$). Results : The measurement error was less than $0.5\%$ by Farmer chamber, $0.5\%$ for 0.125 cc ion chamber, and less than $2\%$ for diode detector for the fixed beam, single arc beam, and 5-arc beam setup. Conclusion : We confirmed the accuracy of dose distribution with the radiosurgery system developed in our institute and the data from this study would be able to be effectively used for the improvement of quality assurance of stereotactic radiosurgery or fractionated stereotactic radiotherapy system.