Optical Measurement Technique for Space Column Characterization | Zendy

Danny A. Barrows | Zendy; Judith J. Watson | Zendy; James Phelps | Zendy; A. W. Burner | Zendy

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Optical Measurement Technique for Space Column Characterization

Author(s) -

Danny A. Barrows,

Judith J. Watson,

James Phelps,

A. W. Burner

Publication year - 2004

Publication title -

nasa sti repository (national aeronautics and space administration)

Language(s) - English

Resource type - Conference proceedings

DOI - 10.2514/6.2004-2185

Subject(s) - characterization (materials science) , column (typography) , computer science , space (punctuation) , remote sensing , optics , physics , geology , telecommunications , frame (networking) , operating system

A simple optical technique for the structural characterization of lightweight space columns is presented. The technique is useful for determining the coefficient of thermal expansion during cool down as well as the induced strain during tension and compression testing. The technique is based upon object-to-image plane scaling and does not require any photogrammetric calibrations or computations. Examples of the measurement of the coefficient of thermal expansion are presented for several lightweight space columns. Examples of strain measured during tension and compression testing are presented along with comparisons to results obtained with Linear Variable Differential Transformer (LVDT) position transducers.

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