Abstract
A novel tensile-testing machine has been manufactured by which the true stress-strain relation of a transparent plastic film at different rates of strain can be obtained by an optical means.
The stress can be measured by the deformation of a spring setup, parallel with the specimen. Both the strain of the specimen and the deformation of the spring are, at the same time, photographed by a cylindrical lens placed on a rotating drum which is synchronized with the rate of tension.
Therefore, various thin plastic films can be actually applied to this tensile-testing machine by which the states of rheological flow and phenomena of rupture can be determined accurately.
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References
Tensile Properties of Thin Plastic Sheets and Films, ASTM Designation D 882-54 T, Issued, 1949; Revised, 1964.
Ito, K., “New Model Material for Photoelasticity and Photoplasticity,”Experimental Mechanics,2 (12),373–376 (1964).
Tentative method of test for tensile properties of plastics, ASTM Designation D 638-52 T, Issued, 1941; Revised, 1942, 1944, 1946, 1949, 1952.
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Ito, K., Tsutsui, M. Novel tensile-testing machine for plastic film. Experimental Mechanics 6, 426–430 (1966). https://doi.org/10.1007/BF02326288
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DOI: https://doi.org/10.1007/BF02326288