ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
A simple photographic method for measuring the slow crack growth in transparent polymer film is described. Framing speeds up to 100 per second have been achieved. Experimental data for a cellulose film with centrally located initial cuts indicate that for 0 〈 t 〈 0.8tb, the crack length c increases with time t according to \documentclass{article}\pagestyle{empty}\begin{document}$$ c = c_0 \exp \left( {{{Kt} \mathord{\left/ {\vphantom {{Kt} {t_b }}} \right. \kern-\nulldelimiterspace} {t_b }}} \right) $$\end{document} where c0 is the initial cut size, K a constant, and tb the time to fracture.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1970.070140521
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