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Proceedings Paper

Effect of carbon overcoating on the mechanical behavior of large flaws
Author(s): Matthew G. Estep; G. Scott Glaesemann
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Paper Abstract

It is found that by abrading an optical fiber surface, a controlled strength distribution can be produced that is effective for dynamic fatigue testing of large flaws. Dynamic fatigue testing of 30 kpsi flaws overcoated with carbon yielded n values greater than 100. It is believed that the abraded fiber samples can be utilized as a surrogate for measuring the fatigue parameters of carbon coated splices and flaws near the proof test level. In addition, it was found that overcoating abraded fiber with carbon increased the strength by a factor of two. This increase is more than what would be predicted by the increase in fatigue resistance that comes with carbon overcoating, and suggests deposition of carbon alters the flaw geometry or stress field surrounding the flaw.

Paper Details

Date Published: 25 February 1993
PDF: 7 pages
Proc. SPIE 1791, Optical Materials Reliability and Testing: Benign and Adverse Environments, (25 February 1993); doi: 10.1117/12.141170
Show Author Affiliations
Matthew G. Estep, Corning Incorporated (United States)
G. Scott Glaesemann, Corning Incorporated (United States)

Published in SPIE Proceedings Vol. 1791:
Optical Materials Reliability and Testing: Benign and Adverse Environments
Roger A. Greenwell; Dilip K. Paul, Editor(s)

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