Probabilistic Models for Prototype Testingby Mircea Grigoriu, (M.ASCE), Assoc. Prof. of Civ. Engrg.; Cornell Univ., Ithaca, N.Y. 14853,
Niels C. Lind, Prof. of Civ. Engrg.; Univ. of Waterloo, Ontario, Canada N2L3G1,
Serial Information: Journal of the Structural Division, 1982, Vol. 108, Issue 7, Pg. 1511-1525
Document Type: Journal Paper
The strength of series-produced or mass produced structures is often correlated because of workmanship or material strength correlation (e.g., steel from the same heat or lumber from similar species grown in the same region). A model of correlation is used to select load factors in design based on prototype testing so as to yield structures with a prescribed reliability. Correlation is usually disregarded in practice. It is found, however, that the correlation in structural resistance is significant and can produce important savings if taken into account. This is illustrated in the design example of an industrial building. In this example the best strategy is to test only one prototype, in agreement with common practice.
Subject Headings: Model tests | Probability | Correlation | Strength of materials | Load tests | Load factors | Steel structures | Professional societies | Structural strength
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