• Title/Summary/Keyword: QFD-HOQ

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A Study of HOQ Complexity Reduction by Quantification Method of TypeIII (수량화방법III에 의한 HOQ의 단순화에 관한 연구)

  • 이형규;이상복
    • Journal of Korean Society for Quality Management
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    • v.31 no.2
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    • pp.131-142
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    • 2003
  • QFD(Quality Function Deployment) is design method which is focused to guarantee of quality and function to satisfy for customer’s need. QFD are used entire manufacturing, specially new production development and design. HOQ(House of Quality) are important tool of QFD, which is implement that complex function and communications of customer. Actually implementation of HOQ are difficult by HOQ's size. It is well known that complexity of HOQ are exponentially increasing by increasing of HOQ’s size. In this Paper, we study of HOQ Complexity reduction by Quantification Method of Type Ⅲ. That method is efficiency and minimize of loss information by reduction HOQ. We give example and prove our suggestion method is better than other methods.

QFD-HOQ Comparison and Improvement Strategies for Quality and Cost of Rebar Couplers (철근 커플러의 품질, 비용에 관한 QFD-HOQ 비교 및 개선전략)

  • Cho, Jaeho;Chae, Myungjin
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2023.05a
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    • pp.319-320
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    • 2023
  • In a reinforced concrete structure, coupler construction is easier to install than jointing or welding reinforcing bars, so it is possible to work by one person. When constructing a reinforcing bar coupler, the coupler construction method must be different for each member that receives a large tensile force or a member that receives a small tensile strength. Various coupler products are used in the global construction market, and the quality, performance, and cost of reinforcing bar joints vary from product to product. This study compares and analyzes the quality and cost of representative rebar couplers according to the requirements using the quality house of QFD-HOQ. The case study presents a quality and cost improvements strategy through QFD-HOQ analysis of rebar couplers.

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A QFD-Based Requirements Analysis for the Development of Integrated Design &Manufacturing Information System (설계.생산 통합 정보시스템 개발을 위한 QFD 기반 기능 분석)

  • Han, K.H.;Park, C.W.
    • IE interfaces
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    • v.17 no.3
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    • pp.261-268
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    • 2004
  • The primary goal of the requirement analysis phase during information system development is to identify and document what is really needed, in a form that clearly communicates to the user and to development team members. Presented in this paper is a QFD(Quality Function Deployment)-based requirement analysis method and procedure for developing a large-scale enterprise information system. For the purpose of elicitation of software functional requirements, this paper adopts the method of HOQ(House Of Quality) and proposes a simplified HOQ which is more suitable for the software requirement analysis. As a result of this paper, it suggests desired functionalities for an integrated design &manufacturing information system.

Integration of QFD and TRIZ to Solve the Inventive Problem in the Design Process (QFD와 TRIZ의 통합에 의한 설계 단계에서의 창의적 문제 해결 방안)

  • Jeong, Hai Sung
    • Journal of Applied Reliability
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    • v.13 no.3
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    • pp.153-163
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    • 2013
  • QFD(Quality Function Deployment) is a very important tool to improve market share by reducing the gap between the voice of customer and the product's performance. But QFD is not a problem solving tool, although it is very useful in identifying what has to be solved or improved in order to meet the customer's desires. TRIZ has proved to be a very strong tool to solve the difficult problems that requires inventive thinking. QFD integrated with TRIZ becomes hot research recently. But merely linking between HOQ(House of Quality) in QFD and the contradiction matrix in TRIZ can not provide designers with a concrete method to solve the technical problem in the design process. Practically, the contradiction matrix and 40 inventive principles are not helpful for solving the technical problem. To solve the technical problem using TRIZ, a search for the tool and the object involved in the problem is made, from which the wanted result should be derived. A practical method to integrate QFD and TRIZ is proposed in this paper.

A Study on the Application of Quality Function Deployment for the Success of Social Commerce (소셜커머스 성공을 위한 품질기능전개(QFD) 적용에 관한 연구)

  • Lee, Sang-Shik
    • Journal of Korea Society of Industrial Information Systems
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    • v.18 no.1
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    • pp.71-79
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    • 2013
  • In order to enhance the understanding of social commerce which is widely spreading globally in a few years, the characteristics selecting social commerce company are analyzed by using quality function deployment(QFD) that is popular in quality management area. To achieve this purpose, this study investigates the concept, market environment, and major competitors of social commerce and interactive relationship between customer's requirements and service characteristics was uncovered by using the house of quality(HOQ) which is a method of QFD. In addition, this study proposes the conceptual model integrating analytic hierarchy process(AHP) and QFD by quantitatively evaluating the importance of customer's requirements and service characteristics.

Consistency Check of a House of Quality Chart by Limiting Probability Concept and Median Rank (극한확률의 개념과 Median Rank를 이용한 HOQ 도표의 일관성 검정)

  • Won, Yu-Woong;Kim, Ki-Young;Yun, Deok-Kyun
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.33 no.3
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    • pp.22-29
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    • 2010
  • Six sigma has been the most influential management innovation tool in order to achieve the customer's satisfaction and keep the competition in the age of limitless competition. The success in six sigma is to find the correct CTQ (Critical to Quality). QFD (Quality function deployment) is the efficient too ever created to tie product and service design decisions directly to customer wants and needs. One of the mistakes in QFD is to analyze using an inconsistent HOQ (House of quality) chart. An inconsistent HOQ chart is one in which the information from the correlation matrix is inconsistent with that from the relationship matrix. This study presents the consistency check and inconsistency check in case of failing the consistency check. Also we propose the procedures using the Limiting Probability in correlation matrix and the Median Rank in relationship matrix in order to be consistent in HOQ chart.

CTQ derived using the new Module device convergence and QFD can be mounted on the dominance Products : Focusing on the sparkling water purifier Case (시장지배제품에 장착 가능한 새로운 Module장치 융합 및 QFD를 활용한 CTQ 도출 : 탄산수 정수기 사례를 중심으로)

  • Song, In-Cheol;Hwang, Dong-Ryong;Lee, Seung-Hee
    • Journal of Digital Convergence
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    • v.13 no.5
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    • pp.195-204
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    • 2015
  • This paper CTQ(Critical to Quality) to draw, aim to derive a key quality factor reflects the customer's requirements by utilizing the QFD technique for sparkling water purifier device that combines the new module. Tasting participants, consumers and New Module device intended for developers who develop and conduct a survey and FGI (Focus Group Interview) VOC(Voice of Customer) to draw, drawn by the EC through the developer VOC and EC (Engineering Characteristic) and charts the relationship between the phases was prepared HOQ(House of Quality). Sparkling water purifier through the HOQ chart certain taste, sound, running water, CO2 cylinder replacement cycle, we obtain results that element is an important quality factors such as ease of use. These factors are closely related to each component regulators and Module device (mixing) associated with the taste of water, booster pumps, and deliver results that the solenoid is considered the most critical part.

An Empirical Study on Customer-Oriented Quality Creation of Shoe : Focusing on Kano′s Model and QFD (제화의 고객지향적 품질창조에 관한 실증적 연구 - Kano의 모형과 QFD를 중심으로)

  • 김희탁;이종철
    • Journal of Korean Society for Quality Management
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    • v.30 no.1
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    • pp.1-21
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    • 2002
  • The purpose of this study was to empirically examine the customer oriented quality creation by considering quality elements required by customers in the product design process. The study tried to extract attractive quality elements by using Kano's model. After identifying the elements HOQ(the house of quality) of QFD(quality function deployment) was used to identify the trend of quality elements evaluation. Test for equal means (t-test) was applied to verify the attractive quality elements of adult shoes. It made us find the customer oriented quality elements from the customer needs and latent dissatisfaction. We collected the opinions of experts on shoes and complete the cause and effect diagram and affinity diagram (KJ method). The data of the questionnaire was put to the QFD and the contents of quality elements was identified by brain storming method. We calculated indexes which were the multiplication of weight and marks of quality elements in the cross table of the HOQ by QFD. Then we tested for the equality of means between the indexes and the sum of attractive quality elements. The results for equal means were statistically significant. To create the customer quality the product design should be differentiated between the age groups over attractive quality elements.

Service Development using Fuzzy QFD in the banking industry

  • Yu, Eun Jin;Kwak, Choonjong
    • Journal of Korean Society for Quality Management
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    • v.43 no.1
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    • pp.103-124
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    • 2015
  • Purpose: This paper proposes a structured approach based on Quality Function Deployment (QFD) for service development in the banking industry. Methods: SERVQUAL is modified and adopted as a tool to understand customer requirements for the QFD. Fuzzy theory is used to resolve the subjectivity and ambiguity of customer requirements and satisfaction. This research also uses the importance- satisfaction model to construct an additional House of Quality (HOQ). A pair of houses of quality provides a confluence of results to avoid a risk of depending solely on the results of a single HOQ. Results: A case study is introduced with three domestic banks. Conclusion: The proposed approach effectively addresses a service development problem.

Analysis of Product Quality Characteristics Using QFD for Food Waste Disposer Development from Customer Perspective (고객관점의 음식물처리기 개발을 위한 QFD를 활용한 제품품질요인 분석)

  • Lee, Jae-Kwang;Lee, Tae-Yang
    • Journal of the Korea Safety Management & Science
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    • v.14 no.1
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    • pp.201-208
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    • 2012
  • Recently the market of the food waste disposer has increased. Therefore, many companies in the development of food garbage disposer has been increasing interest. In this study, we used QFD (Quality Function Development) to find out the quality factors for the development of the food waste disposer reflecting the consumer needs. HOQ (House Of Quality) showing the correlation between consumer characteristic and engineering characteristic was written by investigating the consumer needs based on the consumer complaints and survey. In addition, we generated the CTQ (Critical To Quality) reflecting the weighting of the importance of the parts. As the research result, the important quality factors for the food garbage disposer were the grinding capability, drying, and odor emission features. The crushing motor associated with grinding and dehydration appeared as the most important quality factors among the parts. Second thing was the fan motor associated with odor. The findings will be able to contribute to the development of the food waste disposer reflecting the consumer needs.