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Intensive Course APPLIED ROBUST ENGINEERING DESIGN-RELIABILITY STRUCTURAL-RELIABILITY FATIGUE ANALYSIS OF STRUCTURE December 3-5, 2007 PARIS by Prof. D. KECECIOGLU Dr. J.-C. LIGERON Dr. A. AZARIAN and Dr. H. KARAOUNI Animated by J. ZARKA |
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AIMS OF THE COURSE
This Short Course will comprise the following two parts: The first part will present new approaches to Designing Specified Reliabilities into components at Desired Confidence Levels, including the Design-by-Reliability approach; i.e., the stress and strength distributions’ interference approach. Participants will compare the Conventional Deterministic Design Techniques with the Probabilistic Design-by-Reliability methodology; determine the failure-governing stress and strength distributions; compute the associated Reliability of components and structural members subjected to static and/or fatigue loads; and design a specified Reliability at a desired confidence level into all types of components, including electronic, electrical, and mechanical components, and structural members. The second part will give another vision of the structural reliability with the fatigue analysis of structures during complex loadings with several parameters and variable amplitudes. Nowadays, most of the systems are considered as mecatronic systems comprising mechanical components, electronic parts and often an embedded software. The reliability of such systems is a major concern. The existing approach consists of studying the reliability aspect of each discipline (e.g. mechanical) knowingly that most of the problems are originating from the interfaces. How reliable is your new designs? How and when will they fail? The reliability assessment of mecatronic systems and in particular mechanical parts is crucial to many designs as it is complex and demanding. It is assumed that increased effectiveness of mechanical reliability studies will lead to, reduced time-scales and costs for design assurance and more reliable products and systems which is the key issue to business success. The presentation will be focused on a new approach merging RAMS (Reliability – Availability – Maintenability and Safety) and mechanical analysis and calculations. RAMS analyses are basically performed in order to evaluate the relationships between system and its environment, its major functions, its key features and constraints. Emphasis is put on detailed mechanical analysis on the critical mechanical components. A new modelization of fatigue, based on the works of Zarka and Karaouni, during multi parameters and variable amplitudes loadings, will be presented. It has the advantage of including in an intrinsic way most of all the significant effects on the fatigue behaviour of the considered material (influences of the mean stress, initial state issued from a particular surface treatment or from a pre-hardening, loading direction, history of the loading). The underlying model is easily identifiable from only macroscopical datas (SN curves with different levels of mean stress, endurance limits, …) and also, to take into account the errors during numerical simulations or measurements. Some questions will also be underlined on the uncertainties and the unknowledgable links to the tolerances on geometry and the initial state of the structure, the dispersions on the properties of the real materials used in the structure and the loadings. Many elements could be found in the book Intelligent Optimal Design of Materials and Structures that could be downloaded free from: http://www.cadlm.fr/page.php?page=coit_ress_ine The lecturers, experts in reliability, management, risks analysis and fatigue analysis of mechanical structures will present their view during this very detailed intensive course. It is hoped that each participant will be able to select and use the most appropriate approach for his (her) particular problem. He (she) will be provided with a thorough grounding in these approaches. This will be achieved through a balance of lectures, demonstrations, and discussions of their own problems. |
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WHO SHOULD ATTEND THE COURSE
Researchers and engineers who are involved in the design of various products, while having to consider real industrial applications, reliability engineers and managers, product assurance engineers and managers, design and test engineers and managers, quality control engineers and managers, manufacturing sales and service engineers and managers, staff engineers, project engineers, statistical engineers, industrial engineers, and all other engineers, statisticians and government and industry representatives. Participants will be able to review and discuss the most recent advances in the development of various methods and approaches. Practical lectures on special examples of applications will allow the participants to assimilate the principles of these approaches and to realize their potentialities for the Mechanical/Civil Engineering, the Automotive, Nuclear and the Aeronautical industries. The participants will also have an opportunity to present their own problems and benefit from the advice and comments of the audience and lecturers of this course. This course is unique in that it allows participants to immediately apply in their profession many of the principles and tools that they will learn. This Course will also help participants pass the American Society for Quality's (ASQ) Certified Reliability Engineer (CRE) exam. |
| QUESTIONS What are the practical methods and tools to: Review practical methods for designing mechanical components, structural members, and equipment with the targetted Reliability goal and confidence level. Learn how to size components and select materials that will achieve the desired Reliability goal. What documents will be distributed: Dr. Kececioglu’s book :"Robust Engineering Design-by-Reliability" published by DEStech Publications, Inc., Vol. 1, 714 pp., 2003, Dr J.C. Ligeron’s book, Techniques de fiabilité en mécanique, Supméca. 2006, Dr J. Zarka with coll’s book, “A new approach of Inelastic Analysis of structures” CADLM Editions, 1990, A CD with a copy of all the transparencies presented during the course. will be provided to each participant. If you need any more information regarding the workshops content, please contact the course animator: Prof. Joseph Zarka; he holds a Dr. es-sciences degree from University of Paris and a Civil-Mechanical Engineering diploma from Ecole Polytechnique. He is now the Scientific Director of CADLM. He was Director of Research at CNRS, Laboratoire de Mécanique des Solides, Ecole Polytechnique, France. He was Professor and Chairman of the Materials-Structures Departement at ENSTA, Associate Professor at Ecole Polytechnique, Scientific Director of CETIM. During his several tens years as a researcher, he was able to cover all the problems in high technology; his current research interests are towards a new approach for Advanced Intelligent optimal Design of complex Systems, (A.I.D.S.), control of fabrication, survey of structures. He is the author of several books and more than one hundred papers. Email: j.zarka@cadlm.fr |
| LECTURERS Prof. Dimitri B. Kececioglu (http://www.u.arizona.edu/~dimitri/), Ph.D., P.E., is the main lecturer of the course. He is a Fulbright Scholar and an internationally recognized lecturer and consultant in all aspects of Reliability and Maintainability Engineering, Reliability and Life Testing, and Product Assurance. He is considered to be the Deming of Reliability Engineering. He has lectured in over 400 Institutes, seminars and short courses, and exposed over 12,000 people to Reliability and Maintainability Engineering, worldwide. He has consulted for over 100 highly rated, and leading companies and government organizations internationally. He has been granted 5 patents. As a Professor of Aerospace and Mechanical Engineering at The University of Arizona, he is in charge of a unique 10-course Reliability Engineering Graduate Program, which leads to the Master of Science Degree in the Reliability Engineering Option or a Ph.D. Degree with a Reliability Engineering Minor. He is the Director of the Reliability Testing Institute and the Director of the Reliability Engineering and Management Institute; and the Director of the Tucson, Arizona Chapter of the Society of Reliability Engineers, which he founded. Dr. Kececioglu has published more than 160 papers and articles. He has published eight books and has contributed to fourteen books. Email : dimitri@u.arizona.edu Dr. Jean Claude Ligeron (Mechanical engineering degree and PhD) is one of the greatest French industrial experts in the dependability domain, more specifically in mechanical reliability. He has nearly 40 years of industrial experience gained within several French companies. He acted as expert for the Caracas underground – New York underground – Full automatic metro of Lille – Tunnel under the Channel - French speedy train TGV and also for satellites TDIA, OTS and arm systems: Leclerc Tank and missiles. His latest position was as chairman of the private Company: Ligeron S.A. that he created in 1995 and that is specialised in risk management and dependability. He is the author of several books in the dependability domain and mechanical reliability and he has already published a large number of scientific and technical papers. He has been involved as President of several working groups within ISdF-IMdR Email: Jean-Claude.Ligeron@wanadoo.fr Dr. Ali Azarian (Material engineering degree and PhD) is an expert working for the French Company Ligeron® Sonovision-Itep which is considered as the leading company on the French market in dependability. Based on 35 years of industrial and research experience acquired within the French Atomic Commission – ARMINES – CISI – BERTIN and Ligeron S.A, he is now an internationally recognised technical auditor (IRCA) and expert acting for the European Commission. He has already been the project manager of several large projects such as MERIT aimed at mechanical reliability or Electro-Net devoted to energy transportation. He is also the lecturer at several engineering schools such as Ecole des Mines de Paris – Ecole Nationale Supérieure de Télécommunication de Bretagne – ISTIA – etc… He is the author of more than 20 scientific and technical papers and acts regularly as chairman of the ICSSEA Conference session. Email: ali.azarian@ligeron.com Dr. Habib Karaouni has integrated CADLM as Chief of the Department, Advanced Intelligent Design of Structures. He got his «Doctorat de Mécanique» (PhD) from Ecole Polytechnique (France) on "Nouveaux Outils pour la Conception Fiable des Assemblages Soudés" (New Tools in the Reliable Design of Welded Joints). He graduated from the University of Paris VI (BSc and MSc degrees) and got his master degree, DEA, from the Ecole Centrale of Paris. He is an expert in fatigue under multi-axial loadings, artificial intelligence, inelastic analysis of structures and optimal design. He already published a number of scientific and technical papers. Email: h.karaouni@cadlm.fr Pierre Bonnet Michel Dufresne |
| COURSE VENUE The course will take place in the offices of CADLM in Gif Sur Yvette (France). To get more information, please click here CADLM is a French engineering advisory consulting and R&D Company specializing in CAD, Material Characterization, Finite Element Simulations and Intelligent Optimal Design of Complex Systems. CADLM has organized various international courses, courses, workshops and conferences. http://www.cadlm.fr/page.php?lang=anglais |
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REGISTRATION CONFiRMATION
Here you will find the registration form : Registration Form (ACROBAT document - 118 Ko) |
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COURSE AGENDA
Monday 3 : 8:30 a.m. to 12:00 a.m (D. K) Course objectives. Comprehensive definitions of the Design-by-Reliability Methodology, Failure-governing stress and strength distributions used for predicting the designed-in Reliability; Component Reliability determination at a desired confidence level; Relationship between design safety factors and designed-in reliability Coffee Break Material and. weight savings using the Probabilistic Design by Reliability Methodology; Fifteen-step methodology for predicting the Reliability of all types of components; Failure-governing stress and strength distributions’ determination; Applications and examples. Monday : 1:30 p.m. to 5:30 p.m (D. K) Component Reliability determination after the failure-governing stress and strength distributions are determined. Use of the normal, lognormal Weibull, and extreme value distributions to determine the failure-governing stress and strength distributions. Component and structural member Reliability determination for normally distributed stress and strength. Coffee break Actual Reliability given the safety factors; Avoiding underdesign and overdesign methodologies. Safety Factor and Reliability concepts unified; Applications and examples. Tuesday 4 : 8:30 a.m. to 12:00 a.m (D.K) Component and structural member Reliability for lognormal stress and strength. The safety factor for lognormal stress and strength distributions; relationship to Designed-in Reliability. Coffee break Reliability for neither normal nor lognormal stress and strength distributions. Numerical integration methods for calculating the Designed-in Reliability; The Mellin transform method for calculating the Designed-in Reliability; Applications and examples. Tuesday: 1:30 p.m. to 5:30 p.m (D. K) The Monte Carlo simulation method for determining the Designed-in Reliability; Sampling the stress and strength distributions; Number of simulations for desired accuracy. Coffee break The lower one-sided confidence limit on the true Reliability at the desired confidence level. Design variables and parameters affecting the failure-governing stress distributions. Binary synthesis, moments and Monte Carlo simulation methods of synthesizing the failure-governing stress and strength distributions; Case studies, applications and examples. Cocktail 6:00 to 7:30 p.m Wednesday 5 : 8:30 a.m. to 1:00 p.m (P.B, M.D and A.A) Mechanical Fiability Coffee break Electronical Fiability Use of specific mechanical models for standard components such as ball bearings Employing generic models such as Weibull or Monte Carlo Wednesday: 2:00 p.m. to 5:30 p.m (H. K and J.Z) Review of the simple inelastic analysis of structure Modelling fatigue damage of materials during multiaxial loadings Coffee break Equivalence rule between two complex loadings. Numerical fatigue analysis of structures 5:30 to 6:00 p.m Summary-Good-bye |
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