• 한국품질경영학회:학술대회논문집
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• 한국품질경영학회 2009년도 추계학술대회
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• pp.136-146
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• 2009

This performed a study for the warning indication method and to prevent "defect in expression" that could occur at a product use stage in this study. To accomplish this, companies can increase effectiveness in the warning process presented apply to products which have a direct warning methodology by looking at the combination of research has demonstrated. How to study the existing warning signs of improvement throughout the consumer's visibility, readability, increased availability understand this consumer satisfaction measurement results confirm the safety three years could find lasting satisfaction to rise.

• 산업경영시스템학회지
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• 제30권3호
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• pp.127-134
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• 2007

Predicting fatigue life of rubber components is an important issue in design procedure for industrial trucks to assure the durability and reliability. Main considerations in designing rubber components against fatigue failure are the compounding technology, shape design, and manufacturing process. Among them the rubber compounding technology is one of the most critical factor to determine more than 50% of component's quality. This paper presents how to improve the durability and reliability of industrial rubber mount during its design, development and prototype testing. The data presented illustrates explicitly the prediction of reliability growth in the product development cycle. The application of these techniques is a part of the product assurance function that plays an important role in rubber components reliability improvement.

• 한국산학기술학회논문지
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• 제4권2호
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• pp.81-86
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• 2003

한국인의 발 형태 또는 치수를 측정하거나 비교한 연구는 과거에도 이루어진 바가 있다 그러나 측정 후 제화를 만들면서 제화를 고부가로 만들기 위한 제화에 대한 고객의 요구사항이나 불만, 가격 대, 색깔 등을 조사하는 연구는 거의 전무한 실정이다. 본 연구는 기초 기반기술의 핵심이 되는 족형 개발기술의 선결과제로써, 한국인들이 원하는 구두에 대한 요구조사 분석을 통하여 소비자가 느끼는 구두의 문제점 원하는 사항 등을 파악하여, 이를 족형의 설계에 반영함으로 구두 산업의 생산성 향상을 통한, 고부가 가치산업으로의 방향을 제시하는데 목적이 있다.

• 한국기계가공학회지
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• 제8권2호
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• pp.53-59
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• 2009

The analysis of injection molding process by CAE is widely used in development of plastic products. That comes from the fact that CAE analysis can reduce trial and error based on optimized design. On this study, by use of MOLDFLOW, the causes of product defects were found and solved by trade-off study. CAE analysis includes Flow-Cool-Warpage Analyses and finally a new mold-die design with better product quality was suggested. On injection molding of round-shaped plastic fan, new mold-die system with 4-tunnel gates located on the edge of a fan disc shows better quality rather than pin-point gate located on the center of a disc. That was effective in terms of flow mark removal and flatness improvement of the product.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1995년도 추계학술대회 논문집
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• pp.240-243
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• 1995

This paper describes the process design and forming limit of the forged hinge produec with the axial protrusion on the sheet metal. Process design is consisted of preform and forging process. In this case, the forged hinge product can be formed in a single workpiece without assembling another axial part to it. Process design of the forged hinge product is analyzed by the commercial FEM program. It is known that process design with perform process, shown by the FEM simulaion, can bring the forming limit of the forged hinge product to a great expansion.

• 산업경영시스템학회지
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• 제26권1호
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• pp.54-60
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• 2003

In this research, we investigate the countermeasure of Product Liability through existing research or books for reference about PL and ISO 9001 : 2000 quality management system. And we analyze relation between PL system and ISO 9001 : 2000 Quality Management System after compare ISO 9001 : 2000 and ISO 9000 : 1994. base on this analysis, we integrate the Quality Management System of company and an important factor of PL system in accordance with the product liability law. So we present a general improvable scheme of ISO 9001 quality management system that reduces overlap of quality business and utilize efficiently.

• 산업경영시스템학회지
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• 제23권60호
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• pp.73-81
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• 2000

The testing processes for VLSI finished devices are considerably complex because they require different types of ATE to be linked together. Due to the interaction effect between two or more linked ATEs, it is difficult to trace down the cause of the unexpected longer ATE setup time and random yields, which frequently occur in the VLSI circuit-testing laboratory. The goal of this paper is to develop and demonstrate the methodology designed to eliminate the possible interaction factors that might affect the random yields and/or unexpected longer setup time as well as increase the productivity. The statistical method such as design of experiment or multivariate analysis cannot be applied to the final testing floor here directly due to the environmental constraints. Expanded product data information (PDI) is constructed by combining product data information and ATE control information. An architecture utilizing expanded PDI is designed, which enables the engineer to conduct statistical approach investigation and reduce the setup time, as well as increase yield.

• International Journal of Naval Architecture and Ocean Engineering
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• 제11권1호
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• pp.11-21
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• 2019

In product design, the initial design stage is being increasingly emphasized because it significantly influences the successive product development and production stages. However, for larger and more complex products, it is very difficult to accurately predict product reliability in the initial design stage. Various design methodologies have been proposed to resolve this issue, but maintaining reliability while exploring design alternatives is yet to be achieved. Therefore, this paper proposes a methodology for conceptual design considering reliability issues that may arise in the successive detailed design stages. The methodology integrates the independency of axiomatic design and the hierarchical structure of failure mode, effects, and criticality analysis (FMECA), which is a technique widely used to analyze product reliability. We applied the proposed methodology to a liquefied natural gas fuel gas supply system to verify its effectiveness in the reliability improvement of the design process.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 1999년도 제3회 압연심포지엄 논문집 압연기술의 미래개척 (Exploitation of Future Rolling Technologies)
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• pp.403-411
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• 1999

The steel plate for shadow mask is used in a Cathode-ray tube of TV monitor and is the strictest product in surface quality because hundreds thousand of holes are perforated in a plane of 25 ${\times}$25 inches. To mass-produce this product, a reversible cold rolling mill for silicon steel was used and the rolling technology and the activity for quality improvement are described in this work. Because the steel plate is a mild steel, which is very sensitive to strip-breakage even in a low tension, we reset the minimum tension values matching to the operating conditions. The roll mark due to the multi-segmented araangement of shape controlling roll was prevented by hardening the intermediate shape controlling roll and by changing the existing working-roll into a HSS (Hig Speed Steel) roll. The scratch caused by the speed difference between a idle roll and a strip was prevented by increasing the roll roughness. With these activities, the steel plate for shadow mask can be stable. The continuous improvement of quality is, however, required for the customer satisfaction both of domestic and overseas market.

• 한국생산제조학회지
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• 제20권6호
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• pp.824-829
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• 2011

The mold is widely used for mass production in present industry. Also, product cycle time is faster, for this request, high productivity improvement in mold machining is required. And, In case of mold manufacturing company, the delivery shortening is required to quickly manufacture new product. Therefore, we aim for the delivery shortening though the method of machining time shortening in mold machining. On this paper, first, we made the NC-code of Insert die-casting as the object model using PowerMill. And then, analyzed cutting force by Toolpath in Insert mold machining using Production Module of Advantedge which is cutting force analysis program. After that, we came up with the optimum conditions of productivity improvement throughout the analysis result of before and after optimization of cutting force, machining time variation, and surface roughness by changing min tangential force to 80, 85, 90% of max tangential force.