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A Rational Approach to Determine Minimum Strength Thresholds in Novel Structural MaterialsDesign of safe and survivable structures requires the availability of guaranteed minimum strength thresholds for structural materials to enable a meaningful comparison of strength requirement and available strength. This paper develops a procedure for determining such a threshold with a desired degree of confidence, for structural materials with none or minimal industrial experience. The problem arose in attempting to use a new, highly weight-efficient structural load tendon material to achieve a lightweight super-pressure balloon. The developed procedure applies to lineal (one dimensional) structural elements. One important aspect of the formulation is that it extrapolates to expected probability distributions for long length specimen samples from some hypothesized probability distribution that has been obtained from a shorter length specimen sample. The use of the developed procedure is illustrated using both real and simulated data.
Document ID
20040035837
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Schur, Willi W.
(NASA Wallops Flight Center Wallops Island, VA, United States)
Bilen, Canan
(North Dakota State Univ. Fargo, ND, United States)
Sterling, Jerry
(NASA Wallops Flight Center Wallops Island, VA, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2003
Subject Category
Mechanical Engineering
Meeting Information
Meeting: American Inst. of Aeronautics and Astronautics ATIO Conference
Location: Denver, CO
Country: United States
Start Date: November 17, 2003
End Date: November 20, 2003
Sponsors: American Inst. of Aeronautics and Astronautics
Distribution Limits
Public
Copyright
Public Use Permitted.
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