Sqfe method Under Uncertain Conditions by Generating Fuzzy Membership Function
Abstract: The quality-based approach SQFE (Suivi Qualite Par le Fournisseur Exterieur) has been introduced by three automotive corporations to measure the quality of supplier products. This approach proposes a general criterion by which inspection samples are classified to different demerit categories with different weights, to compute mean unit demerit for each measurable quality characteristic. However, the assignment of an actual and crisp demerit weight to each sample is unrealistic, in the face of the unavoidable measurement errors as well as the inevitable uncertainty involved in human judgment. In this paper an improved estimation procedure which is based on fuzzy logic instead of bivalent logic, is presented to calculate s. The fuzzy set theory is used to add more accuracy and flexibility to the analysis. For this aim, “likelihood view” has been adapted to generate fuzzy membership function, in order to assign the appropriate demerit weight to each sample. In addition, a numerical example that evaluates products based on the proposed method and compares it with the current standard procedure is presented.
INTRODUCTION
Many kinds of classification systems have been provided in various military and International organizations for Standardization (ISO)such as, quality rating systems which have been applied and extended to define, classify, and evaluate none conformities
In the case “Metalcraft Supplier Scorecard”, the author uses an example of a decision-making problem regarding to which supplier should Metalcraft choose to lead to the topic of the Metalcraft supplier scorecard. Metalcraft, as a component designer and manufacturer, supplies a few largest automobile manufacturers with vehicle parts all over the world. As one of the tier 1 suppliers, Metalcraft offers and ships finished parts and components using in the automobile production process to automakers.
All these systems are generally similar. Sometimes, colour tints or clarity grades are denoted by different terms, whereas the ranges of these parameters are the same. As a rule, a diamond does not need to be examined repeatedly, and one system can be converted into another using the table. The GIA system is increasingly acknowledged all over the world.
These are the day to day quality standards of the organisation where detailed analysis of quality is measured.
Precisely some of the characteristics are generally based on the main levels of quality assurance such as with accuracy, accessibility, comprehensiveness, consistency.
ISO 9001:2008 sets the requirements on the quality procedures and their content in sections 4.2.3, 4.2.4, 8.2.2, 8.3, 8.5.2, and 8.5.3.
The automotive component & Fabrication Plant, ACF, was the original plant site for Bridgeton Industries, a major supplier of components for the domestic automotive industry. All of the ACF’s production was sold to the Big-Three domestic automobile manufactures. Its main competitors were local suppliers and other Bridgeton plants. This company did very well but recently it became less effective when foreign competition and scarce, expensive gasoline caused domestic loss of market share. For boost its selling, it made four criteria, quality, customer service, technical capability, and competitive cost position to evaluate three classifications of products.
It is generally accepted that standards should be based on agreed up achievable level of performance considered proper and adequate for specific purposes. The standards can be established, developed, reviewed or enforced by variety of
(International Organization for Standardization) ISO 9000, Quality Management Systems is a series of standards which outline how an organization may create and sustain an effective quality assurance system. The standards offer direction to organizations that want to ensure their services and products consistently meet customer
L.A. Zadeh, Fuzzy Sets [33] In 1965 the concept of fuzzy logic was first introduced by the Professor Lotfi A. Zadeh in the University of California, Berkeley [33]. Fuzzy logic is a powerful design system for implementing the artificial intelligence in the controller which provides simple and intuitive method for software engineers to implement logic in complex systems. This concept had been given in one amongst his research papers under the name Fuzzy logic or Fuzzy sets.
“ISO is commonly known as ‘International Organization for Standardization’, the ISO 9001:2000 standard is used for quality systems audited by outside auditors. This standard is applicable for manufacturing companies not only for software. This standard is given based on the documentation, design, production, testing, servicing and other processes.” (Testing Excellence.com, 2009).
In IT Foundations, I was assigned by Mrs. Baumaster to watch the video Fuzzy Thinking. The speaker in this video is an Astrophysicist by the name of Neil deGrasse Tyson. In the video, Fuzzy Thinking he talked about many things like what was wrong with the misspellings of the word Cat and about his choice between hiring two workers. The video did not seem very interesting at first but as I watched it, the video got more and more interesting. Tyson is a very good presenter in the video because he made it interesting and fun to listen to him. All in all, this video was a great way to get his message out on how people think.
ISO 13485:2003 is an International Organizational for Standardization published in 2003. This international standard requires specifications for a quality management system where an organization needs to provide for designing or manufacturing medical devices. These requirements are essential for any organization that provides services that are related to medical devices disregarding the type or the size of the organization.
Certification: Groups certified according to international standards : DIN ISO 9001:2008, ISO TS 16 949:2009, AS 9100 ISO 14001, (EC) 761/2001 EMAS with regard to environmental
This work is done to study the improvement of the quality in automobile industry. This chapter consists three sections named as “Problem definition”, “Objectives” and “Methodology of the study” respectively. The section 3.1 named as “Problem definition” describes the challenge or difficulty that is to be solved. The solution may be achieved after fulfilling the objective by using some sub-objectives that are described in section 3.2 named as “Objectives”. The methodology described in section 3.3 in details. This methodology has been devised keeping in mind the view of “Problem definition” and the “Objectives” that are suggested for the fulfilment of the solution for the problem.
ISO 9001 is a Quality management standard which is recognised internationally and used by organizations worldwide. It can be used by business of all sizes, it provides an effective quality management system. It was first published in 1987 (updated 1994, 2000, 2008). The latest version was published in 2015. This replaces all the previous editions. (Praxiom Group 2014)