随着市场竞争的加剧,产品创新设计逐渐被视为企业生存和发展的重要渠道。本文对产品的创新设计方法和模型进行了研究。针对现有产品创新设计方法和模型中的潜在问题,综合质量功能展开(QFD)、发明问题解决理论(TRIZ)和故障模式影响分析(F...随着市场竞争的加剧,产品创新设计逐渐被视为企业生存和发展的重要渠道。本文对产品的创新设计方法和模型进行了研究。针对现有产品创新设计方法和模型中的潜在问题,综合质量功能展开(QFD)、发明问题解决理论(TRIZ)和故障模式影响分析(FMEA)各自的特点,建立了一种基于QFD、TRIZ和FMEA的产品创新设计模型。通过在金属圆锯机的送夹料装置创新设计上的具体应用,验证了本文提出的模型完善了当前的产品创新设计过程,提高了用户满意度,降低了设计成本,同时保证了设计的可靠性,为广泛的设计人员提供了更有效的创新设计的思路,也为计算机辅助创新设计软件的开发的提供了理论基础。With the intensification of market competition, product innovation design is gradually regarded as an important channel for enterprise survival and development. This paper studies the innovative design methods and models of products. According to the potential problems in the existing product innovation design methods and model, a product innovation design model based on QFD, TRIZ and FMEA is established based on the characteristics of quality function development (QFD), theory of inventive problem solving (TRIZ) and failure mode and impact analysis (FMEA). Through the specific application of the innovative design of the feeding device of the metal circular saw, the model perfected the current product innovation design process, improved the user satisfaction, reduced the design cost, and ensured the reliability of the design, for a wide range of designers providing more effective innovative design ideas, also providing the theoretical basis for the development of computer-aided innovation design software.展开更多
Risk analysis of key systems have become a growing topic late of because of the development of offshore structures. Equipment failures of offioading system and fire accidents were analyzed based on the floating produc...Risk analysis of key systems have become a growing topic late of because of the development of offshore structures. Equipment failures of offioading system and fire accidents were analyzed based on the floating production, storage and offioading （FPSO） features. Fault tree analysis （FTA）, and failure modes and effects analysis （FMEA） methods were examined based on information already researched on modules of relex reliability studio （RRS）. Equipment failures were also analyzed qualitatively by establishing a fault tree and Boolean structure function based on the shortage of failure cases, statistical data, and risk control measures examined. Failure modes of fire accident were classified according to the different areas of fire occurrences during the FMEA process, using risk priority number （RPN） methods to evaluate their severity rank. The qualitative analysis of FTA gave the basic insight of forming the failure modes of FPSO offioading, and the fire FMEA gave the priorities and suggested processes. The research has practical importance for the security analysis problems of FPSO.展开更多
Potential failures of electronic instrument are very common in the engineering practice.In this paper,potential failure state model is analyzed based on dynamic characteristics of electronic instrument at work and a c...Potential failures of electronic instrument are very common in the engineering practice.In this paper,potential failure state model is analyzed based on dynamic characteristics of electronic instrument at work and a comprehensive method of judging multi-state reliability is put forward.Then,a multi-state electronic instrument reliability analysis model is built based on Bayesian Networks(BN).Considering the failure-potential failure-normal work states,the model is built to estimate reliability of the system and the conditional probability of the elements.Finally,the model is proved corrective and effective by examples.展开更多
The aim of this paper is to present works performed in HTC （Heat-Tech Center）, Research ＆ Development Centre of Veolia Group located in Warsaw regarding assessment of probability of failure in DHN （district heatin...The aim of this paper is to present works performed in HTC （Heat-Tech Center）, Research ＆ Development Centre of Veolia Group located in Warsaw regarding assessment of probability of failure in DHN （district heating network）. This work is a part of a project dedicated to develop a software which objective is to increase reliability of DHN. The research methods consisted of three approaches. First, using database of failures which happened in Warsaw DHN and repairing protocols from past 10 years, a statistics approach was applied to perform first analysis. The result was that pipelines with nominal diameter DN （nominal diameter） ≤ 150 had higher failure rate per km, than pipelines with DN 〉 150. The next step of research was to study influence of internal （corrosion caused by heat carrier, quality of materials） and external （stray currents） factor in order to assess its individual influence on failure rate of pipe and explain reasons of differences in failure rate. To end a FMEA （failure mode and＇effects analysis） will aim to identify the main failures modes appearing on DHN, to estimate the main causes of these failures and to propose the best solutions regarding the causes, the costs and the means available.展开更多
文摘随着市场竞争的加剧,产品创新设计逐渐被视为企业生存和发展的重要渠道。本文对产品的创新设计方法和模型进行了研究。针对现有产品创新设计方法和模型中的潜在问题,综合质量功能展开(QFD)、发明问题解决理论(TRIZ)和故障模式影响分析(FMEA)各自的特点,建立了一种基于QFD、TRIZ和FMEA的产品创新设计模型。通过在金属圆锯机的送夹料装置创新设计上的具体应用,验证了本文提出的模型完善了当前的产品创新设计过程,提高了用户满意度,降低了设计成本,同时保证了设计的可靠性,为广泛的设计人员提供了更有效的创新设计的思路,也为计算机辅助创新设计软件的开发的提供了理论基础。With the intensification of market competition, product innovation design is gradually regarded as an important channel for enterprise survival and development. This paper studies the innovative design methods and models of products. According to the potential problems in the existing product innovation design methods and model, a product innovation design model based on QFD, TRIZ and FMEA is established based on the characteristics of quality function development (QFD), theory of inventive problem solving (TRIZ) and failure mode and impact analysis (FMEA). Through the specific application of the innovative design of the feeding device of the metal circular saw, the model perfected the current product innovation design process, improved the user satisfaction, reduced the design cost, and ensured the reliability of the design, for a wide range of designers providing more effective innovative design ideas, also providing the theoretical basis for the development of computer-aided innovation design software.
基金Supported by the Fundamental Research Funds for the Central Universities (HEUCFR1109)"111" projects foundation (Grant No.B07019) from State Administration of Foreign Experts Affairs of China and Ministry of Education of China
文摘Risk analysis of key systems have become a growing topic late of because of the development of offshore structures. Equipment failures of offioading system and fire accidents were analyzed based on the floating production, storage and offioading （FPSO） features. Fault tree analysis （FTA）, and failure modes and effects analysis （FMEA） methods were examined based on information already researched on modules of relex reliability studio （RRS）. Equipment failures were also analyzed qualitatively by establishing a fault tree and Boolean structure function based on the shortage of failure cases, statistical data, and risk control measures examined. Failure modes of fire accident were classified according to the different areas of fire occurrences during the FMEA process, using risk priority number （RPN） methods to evaluate their severity rank. The qualitative analysis of FTA gave the basic insight of forming the failure modes of FPSO offioading, and the fire FMEA gave the priorities and suggested processes. The research has practical importance for the security analysis problems of FPSO.
基金supported by the Natural Science Foundation of China(No.60971092)
文摘Potential failures of electronic instrument are very common in the engineering practice.In this paper,potential failure state model is analyzed based on dynamic characteristics of electronic instrument at work and a comprehensive method of judging multi-state reliability is put forward.Then,a multi-state electronic instrument reliability analysis model is built based on Bayesian Networks(BN).Considering the failure-potential failure-normal work states,the model is built to estimate reliability of the system and the conditional probability of the elements.Finally,the model is proved corrective and effective by examples.
文摘The aim of this paper is to present works performed in HTC （Heat-Tech Center）, Research ＆ Development Centre of Veolia Group located in Warsaw regarding assessment of probability of failure in DHN （district heating network）. This work is a part of a project dedicated to develop a software which objective is to increase reliability of DHN. The research methods consisted of three approaches. First, using database of failures which happened in Warsaw DHN and repairing protocols from past 10 years, a statistics approach was applied to perform first analysis. The result was that pipelines with nominal diameter DN （nominal diameter） ≤ 150 had higher failure rate per km, than pipelines with DN 〉 150. The next step of research was to study influence of internal （corrosion caused by heat carrier, quality of materials） and external （stray currents） factor in order to assess its individual influence on failure rate of pipe and explain reasons of differences in failure rate. To end a FMEA （failure mode and＇effects analysis） will aim to identify the main failures modes appearing on DHN, to estimate the main causes of these failures and to propose the best solutions regarding the causes, the costs and the means available.
