• 소성∙가공
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• 제8권6호
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• pp.569-575
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• 1999

Computer programs have been developed to design the forging dies of turbine and compressor blades. The design of forging dies is based the side force and the filling of die cavity. In this study, slab method has been applied to simulate forging processes numerically. the program composed of Visual Basic also provides the informations of mean stress, total forging load, distribution of temperature, position of neutral line, total volume and volume of flash in the final stage to users. The preform position is predicted by the reverse slab method. The program has been successfully applied to various types of turbine blades.

• 설비공학논문집
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• 제18권12호
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• pp.992-998
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• 2006

This study is to optimize design parameters for waste heat recovery boiler with water tube and three drum. The design optimization considered here is to find the most economic dimension of the boiler considered which results in a minimum cost in producing a unit amount of steam per given period of operation. For this purpose, optimize design have to determine what are the main parameters of affecting the total cost of producing a unit amount of steam which is comprised of manufacturing cost of the boiler, operating cost of the fan etc.

• Structural Engineering and Mechanics
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• 제14권2호
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• pp.223-236
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• 2002

The main objective of the present paper is to address a formal procedure for orthotropic steel plates design. The theme of the proposed approach is to recast the design procedure into a mathematical programming model. The objective function to be optimized is the total weight of the structure. The total weight is function of its layout parameters and structural element design variables. Mean while the proposed approach takes into consideration the strength and rigidity criteria in addition to other dimensional constraints. A nonlinear programming model is developed which consists of a nonlinear objective function and a set of implicit/explicit nonlinear constraints. A transformation method is adopted for minimization strategy, where the primal model constrained problem is transformed into a sequence of unconstrained minimization models. The search strategy is based on the well-known Fletcher/Powell algorithm. The finite element technique is adopted for discretization and analysis strategies. Mindlin theory is selected to simulate the finite element model and a selective reduced integration scheme is exploited to avoid a shear lock problem.

• 한국산학기술학회논문지
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• 제11권11호
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• pp.4075-4079
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• 2010

본 논문의 목적은 현재 도기가스, 상하수도 및 화학배관 파이프 등의 플라스틱 배관 공사에서 사용되는 파이프 융착기를 3차원 설계하고 융착 시 발생하는 문제점을 해결하기 위하여 구조해석에 의한 검증작업을 거쳐 구조를 개선한다. 현장에서 파이프 융착 작업 시 융착기 크램프에 크랙이 발생하므로 이를 개선하기 위하여 융착기의 구조를 변경하는 설계치를 제시함으로서 작업의 효율성을 높이고 기술경쟁력을 향상시킨다.

• 대한건축학회논문집:구조계
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• 제35권10호
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• pp.135-142
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• 2019

Ant colony optimization(ACO) technique is utilized in truss size optimization with frequency constraints. Total weight of truss to be minimized is considered as the objective function and multiple natural frequencies are adopted as constraints. The modified traveling salesman problem(TSP) is adopted and total length of the TSP tour is interpreted as the weight of the structure. The present ACO-based design optimization procedure uses discrete design variables and the penalty function is introduced to enforce design constraints during optimization process. Three numerical examples are carried out to verify the capability of ACO in truss optimization with frequency constraints. From numerical results, the present ACO is a very effective way of finding optimum design of truss structures in free vibration. Finally, we provide the present numerical results as future reference solutions.

• 국제학술발표논문집
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• The 2th International Conference on Construction Engineering and Project Management
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• pp.721-728
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• 2007

The prediction of quality characteristics during the design phase of a construction project was fragmented, because no particular method exists. One of the most important key responses is the total displacements (horizontal and vertical). A brainstorming session produces the quality parameters i.e. the control factors which here are identified as: the steel joint, the pile's length, the excavation depth and angle, the distance between the piles, the anchor stretch and length to name just some of the most engaging in the design. The purpose of this study is to optimise these parameters to minimize the total displacements following a methodology based on Taguchi method. For this reason, a 2-level, L₈ orthogonal array has been employed to organize the experimentation. Data is obtained from a real-life excavation project designed on the Plaxis v.8 CAE package. Taguchi analysis is performed in the statistical package Minitab.

• 복식
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• 제51권3호
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• pp.111-127
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• 2001

This study aims to apply the formative aesthetic of human body to the form of clothing. For this purpose I try to find the various methods of analysis used in the work of sculpture. The method of inference and the checklists of design are used to relate the sculpture with the clothing design specifically. This methodology intends to regard human body as an artistic form and use the image of sculpture to the maximum. Especially I try to derive the motives of design and recreate them in clothing design emphasizing silhouette. On this methodology, following results were developed. First, the observations on the formative characteristic of human body show that the transformed form of human body expresses more perfect image of human body than the original form. The power of simplicity heightens the total beauty of the work. Second, the image of human body expressed in simplicity heightens the total beauty of the work. Second, the image of human body expressed in simplicity and exaggeration can be variously recreated in a silhouette with the formative and cubic effect, simplicity, and activity. Third, the elegant and static image found in the analysis and synthesis of human body can be used as a motive of clothing design and the changed details lead to the transformation of silhouette. Fourth, in developing designs by the item of checklists, one motive can be variously recreated according to the methods of designs.

• 패션비즈니스
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• 제24권5호
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• pp.21-34
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• 2020

The purpose of this study was to develop a new Korean fashion design using forced-relationship techniques and the traditional hanbok Korean dress and Korean traditional images as the source of the ideas. The research methods consisted of literature research and design production. In the literature research for the hanbok composition and design elements, the concept and type of forced-relationship techniques were studied. The design development process was as follows. First, 'Developing a Korean fashion design' was set as the design theme. Second, the composition and design elements of hanbok and Korean motifs, which consist of Korean images were set as fixed elements of the forced-relationship technique. Third, among the various trends in keywords, 'punk' belonging to a subculture, was set as an arbitrary element of the forced-relationship technique. Fourth, the punk fashion design elements and items were listed. Fifth, a rough sketch was performed by selectively combining fixed and arbitrary elements. Sixth, a design evaluation process was conducted to select the designs out of 52 design sketches that fit the purpose of the study. Seventh, a total of six designs were selected after making design modifications. Through this, a total of six works of women's clothing was designed, made, and presented. This study offers the possibility of developing new Korean fashion design images, and a chance to share designs based on different cultural elements in the global market.

• 패션비즈니스
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• 제25권1호
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• pp.16-38
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• 2021

The purpose of this study was to develop a fashion design with a greater sense of modernism based on the characteristics and design elements of Myanmar traditional clothing focusing on the Yandanapon Mandalay period of the last dynasty of Myanmar using the SCAMPER technique, which is one of the creative methodologies. Contemporary menswear fashion designs were developed based on the individual elements of the questionnaire on the SCAMPER technique using fashion design elements. The design development process was as follows. First, this study set the developmental theme of contemporary menswear fashion design in Myanmar's traditional clothing style during the Yadanapon Mandalay period. Second, to develop designs using the SCAMPER technique, the elements of Myanmar's traditional clothing were first divided into item composition and design elements, followed by application of the SCAMPER questionnaire. Also, various designs were developed by combining and applying different elements. Third, optionally selective elements evolved from the design development process using the SCAMPER technique questionnaire. Fourth, the design evaluation was used to select the designs matching the study purpose out of 55 design sketches via FGI (Focus Group Interview) consisting of four fashion designers. Fifth, a total of six designs were selected by additional design modification. Based on the aforementioned processes, a total of six works of men's clothing design were presented. This study provides basic data for the cultural and aesthetic understanding of traditional Myanmar clothing. It also serves as a source of new ideas to express modern fashion design in different ways.

• 한국신뢰성학회지:신뢰성응용연구
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• 제11권2호
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• pp.187-212
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• 2011

KHP project sets total ownership cost as the target cost by applying CAIV and administrates total ownership cost through compromise analysis, a periodical estimate and management of design alternatives for each development. Based on expected cost results, sensibility of total ownership cost is analyzed complying with the change of reliability, availability, maintainability and other related factors. By considering potential total ownership cost saving methods, first of all, this paper identifies total ownership cost changing effects for each related factor, secondly, suggests total ownership cost and maintenance and operating cost saving methods via finding components that affect total ownership cost and lastly, suggests total ownership cost saving directions that may be applied to other projects in the future.