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TENSINet Symposium Sofia, 15 th –17 th September 2010 Specification of a round robin exercise for the design of membrane structures Prof. Peter Gosling, Dr. Ben Bridgens Newcastle University, UK

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TENSINet Symposium Sofia, 15 th –17 th September 2010 In experimental methodology, a round robin test is a test (measurement, analysis, or experiment) performed independently several times. This can involve multiple independent scientists performing the test with the use of the same method in different equipment, or a variety of methods and equipment. In reality it is often a combination of the two, for example if a sample is analysed, or one (or more) of its properties is measured by different laboratories using different methods, or even just by different units of equipment of identical construction. What is a Round Robin exercise?

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TENSINet Symposium Sofia, 15 th –17 th September 2010 … There are different reasons for performing a round robin test: e.g. verification of a new method of analysis: If a new method of analysis has been developed, a round robin test involving proven methods would verify whether the new method produces results that agree with the established method. Why undertake a Round Robin exercise?

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TENSINet Symposium Sofia, 15 th –17 th September 2010 Drivers in the analysis of Membrane Structures

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TENSINet Symposium Sofia, 15 th –17 th September 2010

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TENSINet Symposium Sofia, 15 th –17 th September 2010 Relevant information Mathematical representation Of uncertain quantities Histogram Density or distribution function Statistics or parameters estimation Define performance criteria Risk evaluation Consequence Design decision Material TestExperience Finite Element Analysis (e.g.) FORM Data-fitting test

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TENSINet Symposium Sofia, 15 th –17 th September 2010

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TENSINet Symposium Sofia, 15 th –17 th September 2010 CEN TC250 WG5 EUROCODE 10 CEN TC248 WG4

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TENSINet Symposium Sofia, 15 th –17 th September 2010

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TENSINet Symposium Sofia, 15 th –17 th September 2010

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TENSINet Symposium Sofia, 15 th –17 th September 2010 Benefits of a Round Robin exercise?

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TENSINet Symposium Sofia, 15 th –17 th September 2010 Principles of the exercise

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TENSINet Symposium Sofia, 15 th –17 th September 2010 Principles of the exercise

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TENSINet Symposium Sofia, 15 th –17 th September 2010 Specification of the exercise – information supplied

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TENSINet Symposium Sofia, 15 th –17 th September 2010 Specification of the exercise – information not supplied Specification of the exercise – analysis assumptions

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TENSINet Symposium Sofia, 15 th –17 th September 2010 Task completion and reporting

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TENSINet Symposium Sofia, 15 th –17 th September 2010 Task completion and reporting – assumptions, information, & outcomes to be reported

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TENSINet Symposium Sofia, 15 th –17 th September 2010 Task completion and reporting – assumptions, information, & outcomes to be reported

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TENSINet Symposium Sofia, 15 th –17 th September 2010 Membrane structure tasks – example candidate structures

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TENSINet Symposium Sofia, 15 th –17 th September 2010 Membrane structure tasks – example candidate structures

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TENSINet Symposium Sofia, 15 th –17 th September 2010 Membrane structure tasks – example candidate structures

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TENSINet Symposium Sofia, 15 th –17 th September 2010

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TENSINet Symposium Sofia, 15 th –17 th September 2010 The driver behind the inception of the Group is the linking together of testing and analysis such that each are supportive and inform each other, rather than being considered independently as is generally the current practice.

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TENSINet Symposium Sofia, 15 th –17 th September 2010

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TENSINet Symposium Sofia, 15 th –17 th September 2010

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TENSINet Symposium Sofia, 15 th –17 th September 2010

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