Journal of the Society of Motion Picture Engineers ( Volume: 27, Issue: 2, August 1936)

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Physical Tests on Cellulosic Films, and Their Reproducibility

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 27, No. 2, pp. 218–227
Abstract: When all experimental errors of testing are adequately minimized, cellulose ester sheets show a dispersion of tensile strength values higher than that found for metal strips and wires. The dispersion of “yield point” values is much less than that of tensile strength. It is suggested that the lowest value (or, at any rate, the bracket of values lower than the average) of tensile strength for a number of tests equivalent to a given film length is a better measure of the probability of failure in performance than the average value. However, for comparative rating, it appears that generally the ratio of lowest to average is fairly constant.
Publication Date: 1936-08-01
DOI: 10.5594/J08639
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J08639
Author(s): S. E. Sheppard
P. T. Newsome
S. S. SweetEastman Kodak Co., Rochester, N. Y.
Copyright: © 1936 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1. Jones G. G. Miles F. D. : “The Tensile Strength of Nitrocellulose Films,” J. Soc. Chem. Ind. , 52 (Aug., 1933 ), No. 33 , p. 251T . EXTERNAL
2. McNally J. G. Sheppard S. E. : “Double Refraction in Cellulose Acetate and Nitrate Films,” J. Phys. Chem. , 34 (Jan., 1930 ), p. 166 . EXTERNAL
3. Sheppard S. E. Sweet S. S. : “The Effect of Scratches on the Strength of Motion Picture Film Support,” Trans. Soc. Mot. Pict. Eng. , VIII ( 1924 ), No. 18 , p. 102 . EXTERNAL
4. Sheppard S. E. Carver E. K. Sweet S. S. : “The Time Factor and Yield Value of Cellulose Esters,” Ind. Eng. Chem. , 18 (Jan., 1926 ), p. 76 . EXTERNAL
5. Briefer M. : “Physical Properties of Motion Picture Film,” Trans. Soc. Mot. Pict. Eng. , VIII (May, 1924 ), No. 18 , p. 177 . EXTERNAL
6. Sheppard S. E. Sweet S. S. : “The Effect of Scratches and Cuts on the Strength of Motion Picture Film,” Trans. Soc. Mot. Pict. Eng. , IX (Oct., 1925 ), No. 24 , p. 122 . EXTERNAL
7. Loveland R. P. Trivelli A. P. H. : “Mathematical Methods of Frequency Analysis of Size of Particles. II. Application to Silver Bromide Precipitates,” J. Franklin Inst. , 204 (Sept., 1927 ), No. 3 , p. 377 . EXTERNAL

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S. E. Sheppard, P. T. Newsome, and S. S. Sweet; Physical Tests on Cellulosic Films, and Their Reproducibility, Journal of the Society of Motion Picture Engineers ( Volume: 27, Issue: 2, August 1936); SMPTE, 1936. Available at https://doi.org/10.5594/J08639

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S. E. Sheppard, P. T. Newsome, and S. S. Sweet; Physical Tests on Cellulosic Films, and Their Reproducibility, Journal of the Society of Motion Picture Engineers ( Volume: 27, Issue: 2, August 1936); SMPTE, 1936. Available at https://doi.org/10.5594/J08639

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<span class="citation">S. E. Sheppard, P. T. Newsome, and S. S. Sweet; <cite>Physical Tests on Cellulosic Films, and Their Reproducibility</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 27, Issue: 2, August 1936); SMPTE, 1936. Available at <a href="https://doi.org/10.5594/J08639" target="_blank" rel="noopener">https://doi.org/10.5594/J08639</a></span>

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S. E. Sheppard, P. T. Newsome, and S. S. Sweet; <cite id="bib-10-5594-j08639">Physical Tests on Cellulosic Films, and Their Reproducibility</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 27, Issue: 2, August 1936); SMPTE, 1936
<span class="doi">10.5594/J08639</span>
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