• 제목/요약/키워드: product defect

검색결과 268건 처리시간 0.023초

건설산업에 있어서 제조물책임법의 시행에 따른 영향과 대응방안 기초연구 (The Influence and Construction Strategies of Constructor under the PL Law in Construction Industry)

  • 김진호
    • 한국건축시공학회지
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    • 제4권4호
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    • pp.127-134
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    • 2004
  • The purpose of this study is to suggest the rational plans of Construction Policies under Product Liability Law. The results of this study are summarized as follows: 1) Analytical survey of actual Influence under Product Liability Law in Construction Industry. 2) Review of Business Strategies of Constructor and Building Material Supplier. Although real estate including apartment is excepted from the application of product liability law, constructor are not perfectly free to the product liability law. And the expectancies of this paper are that it can be used as efficient data for improvement of system to systematize contents of Product Liability Law in korea.

제조물책임(PL)사례의 유형화 분석 (Classification of Product Liability Case)

  • 최성운;김성철
    • 대한안전경영과학회지
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    • 제2권3호
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    • pp.151-169
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    • 2000
  • Product Liability(P.L) is designed for system which charge with a compensation for demages that has nothing to do with whether manufacturer make a mistake or not in that case suffer heavy losses anyone of body or property by defect of product. Now and then, most people interest of safety of product and main countries already carry out Product Liability. This paper analyzes newly studied cases by defects, products, countries in Korea and some developed countries (USA and Japan mainly) in order to prepare for Product Liability, which will be enforced on July 1, 2002 in Korea. Before P.L. began to enforce, many cases have happened and resulted in sues. Therfore, each country have revised the current P.L. after many trials and errors. From this respect, the cases of other countries and Korea will be compared and analyzed.

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제품기획단계의 안전성 평가 필요성에 관한 연구 (A need of safety evaluation for product planning step)

  • 박지영;조암
    • 대한안전경영과학회지
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    • 제10권1호
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    • pp.23-31
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    • 2008
  • Recently, there is a rise of accident by some defective products, especially it reported that a serious fact is a defect of design causing some problem since execute a product liability(PL), people who use products have been able to bo remunerated for a damage to those defects, so responsibilities of companies are rising more and more. Therefore, companies that are obligated to manufacture a safety product, and should make preparation for PL. For solving the problem, even though manufacturers tried to make a safety product ay mixed ways, it is seldom that its safety is considered from planning a design. This thesis has suggested a way aimed at improving a safety of products through considering a stage of a plan, by searching and analyzing the design-process in to each steps.

제조물책임(PL) 대응방안으로의 ISO9001:2000 품질경영시스템 (Product Liability Prevention by ISO9001:2000 Quality Management System)

  • 최성운;이락구
    • 대한안전경영과학회지
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    • 제2권2호
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    • pp.57-69
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    • 2000
  • Beginning from July. 2000, the product liability of Korea is designed for reduction of customer loss by defective products. Therefore, most of company are supposed to be ready for taking care of safety and quality of products. ISO9001:2000 quality management system reform to emphasize continual improvement of the process with customer satisfaction. First of all, this paper start with introduction motive of the product liability and examine distinctive mark of the ISO9001:2000 quality management system. We consider the correlation between ISO9001:2000 quality management system and product liability and would like to propose product liability prevention by ISO9001:2000 quality management system with classification a defect style of product, the management guide and the law case.

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다중 스레드를 이용한 실시간 동판 검사 시스템 (A Real-time Copper Foil Inspection System using Multi-thread)

  • 이재광;최동혁
    • 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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    • 제10권6호
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    • pp.499-506
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    • 2004
  • 제안된 동판 표면 검사 시스템은 PC-기반으로 다중 스레드 기법과 다중 CPU를 이용해 동판 표면의 결함을 실시간으로 검사하는 시스템이다. 초고속 라인 스캔 카메라로 영상 취득 보드에 영상을 실시간으로 취득하여 처리할 때, 더블 버퍼링 방법으로 입출력과 처리가 동시에 수행되어 처리 속도를 높인다. 다중 스레드 기법에서는 시스템 자원 활용과 다중 스레드로 CPU의 사용을 최대화하여 실시간 처리하며, 다중 스레드 구조로도 실시간 처리가 어려운 경우에는 다중 CPU를 사용하여 이를 해결한다. 또한 동판 표면 영상에서 결함 검출하여 분류할 때, 실시간 처리를 만족시키기 위해서 결함영상의 공분산 행렬의 고유치 비율, 명암차 등의 연산으로 분류할 수 있는 방법을 제시한다. 결함의 검출은 조명 불균형에 대한 보상 처리가 적용된 다음 임계치에 의해 검출된다. 검출된 결함은 제안된 분류 방법으로 특징을 분석한 뒤 결함의 형태를 분류한다. 특징은 결함 너비와 고유치 비율, 명암차 등이 사용되었다. 제시된 방법을 검증하기 위해서 총 141개의 결함을 분류하는 실험이 진행되었고, 결과로는 89.4% 성공률을 보였다.

개선된 Deep Feature Reconstruction : 다중 스케일 특징의 보존을 통한 텍스쳐 결함 감지 및 분할 (Enhanced Deep Feature Reconstruction : Texture Defect Detection and Segmentation through Preservation of Multi-scale Features)

  • 시종욱;김성영
    • 한국정보전자통신기술학회논문지
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    • 제16권6호
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    • pp.369-377
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    • 2023
  • 산업 제조 분야에서 품질 관리는 불량률을 최소화하는 핵심 요소로, 미흡한 관리는 추가적인 비용 발생과 생산 지연을 야기할 수 있다. 본 연구는 제조품의 텍스쳐 결함 감지의 중요성을 중심으로, 보다 정밀한 결함 감지 방법을 제시한다. DFR(Deep Feature Reconstruction) 모델은 특징맵의 조합 및 재구성을 통한 접근법을 채택하였지만, 그 방식에는 한계가 있었다. 이에 따라, 우리는 제한점을 극복하기 위해 통계적 방법론을 활용한 새로운 손실 함수와 스킵 연결구조를 통합하고 파라미터 튜닝을 진행하였다. 이 개선된 모델을 MVTec-AD 데이터세트의 텍스쳐 카테고리에 적용한 결과, 기존 방식보다 2.3% 높은 결함 분할 AUC를 기록하였고, 전체적인 결함 감지 성능도 향상되었다. 이 결과는 제안하는 방법이 특징맵 조합의 재건축을 통한 결함 탐지에 있어서 중요한 기여함을 입증한다.

제조물 책임(PL)법 대응을 위한 품질 리스크 진단 모델 개발 (Developing a Quality Risk Assessment Model for Product Liability Law)

  • 오형술
    • 산업경영시스템학회지
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    • 제40권3호
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    • pp.27-37
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    • 2017
  • As the global uncertainty of manufacturing has increased and the quality problem has become global, the recall has become a fatal risk that determines the durability of the company. In addition, as the convergence of PSS (product-service system) product becomes common due to the development of IT convergence technology, if the function of any part of hardware or software does not operate normally, there will be a problem in the entire function of PSS product. In order to manage the quality of such PSS products in a stable manner, a new approaches is needed to analyze and manage the hardware and software parts at the same time. However, the Fishbone diagram, FTA, and FMEA, which are widely used to interpret the current quality problem, are not suitable for analyzing the quality problem by considering the hardware and software at the same time. In this paper, a quality risk assessment model combining FTA and FMEA based on defect rate to be assessed daily on site to manage quality and fishbone diagram used in group activity to solve defective problem. The proposed FTA-FMEA based risk assessment model considers the system structure characteristics of the defect factors in terms of the relationship between hardware and software, and further recognizes and manages them as risk. In order to evaluate the proposed model, we applied the functions of ITS (intelligent transportation system). It is expected that the proposed model will be more effective in assessing quality risks of PSS products because it evaluates the structural characteristics of products and causes of defects considering hardware and software together.

RICHARDSON EXTRAPOLATION AND DEFECT CORRECTION OF MIXED FINITE ELEMENT METHODS FOR ELLIPTIC OPTIMAL CONTROL PROBLEMS

  • Chen, Yanping;Huang, Yunqing;Hou, Tianliang
    • 대한수학회지
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    • 제49권3호
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    • pp.549-569
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    • 2012
  • In this paper asymptotic error expansions for mixed finite element approximations to a class of second order elliptic optimal control problems are derived under rectangular meshes, and the Richardson extrapolation of two different schemes and interpolation defect correction can be applied to increase the accuracy of the approximations. As a by-product, we illustrate that all the approximations of higher accuracy can be used to form a class of a posteriori error estimators of the mixed finite element method for optimal control problems.

고속도로 주행 중 제동장치 리턴스프링 결함으로 발생한 트럭화재의 분석 (Analysis of the Truck Fire Caused by Return Spring Defect of a Braking System during Expressway Driving)

  • 김윤회;이의평
    • 한국자동차공학회논문집
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    • 제22권2호
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    • pp.148-155
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    • 2014
  • Most truck fires breaking out on the expressway are directly damaged by fire destruction of truck and freight and many of them cause indirect damage such as serious traffic holdups. This study analyzed the fire causes and their liability of the 25-ton truck fire breaking out during expressway driving. This truck fire was caused by manufacturing defect of return spring of a braking system. The fire liability rested with a maker(manufacturer) rather than a truck owner or a driver and the maker also bore fire liability based on the Product Liability Law.

효율적 작업자 실수 예방 관리 사례연구 (A Case Study on Efficiency Worker blunder Preventive Management)

  • 유병우
    • 대한안전경영과학회지
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    • 제8권1호
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    • pp.27-42
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    • 2006
  • Considering in view of China's low price and Japan's high technology, the most important point is the quality of product. To increase the comparative power internationally all workingmen have to fulfill the responsibility to maximize the quality, and this is possible practiced under 'Zero Defect' spirit. To reduce the defect ratio to 'Zero' the workingmen have to recognize own fault, all the manufacturing process should be conducted under 'Fool Proof System', If done under this circumstances, then labor force can work comfortably and safely without nervousness and tiresome. The productivity and quality can increase ultimately and even foreign labor, imbecile child, old-aged labor can participate in work, which can reduce shortage of labor source. Therefore, in this study all defects in manufacturing process, it would be recognized the errors and mistakes caused by human.