Zero stress aging and the static fatigue transition in optical glass fibers

Enrique Cuellar; Michael T. Kennedy; Daniel R. Roberts; John E. Ritter Jr.

doi:10.1117/12.141160

25 February 1993 Zero stress aging and the static fatigue transition in optical glass fibers

Enrique Cuellar, Michael T. Kennedy, Daniel R. Roberts, John E. Ritter Jr.

Proceedings Volume 1791, Optical Materials Reliability and Testing: Benign and Adverse Environments; (1993) https://doi.org/10.1117/12.141160
Event: Fibers '92, 1992, Boston, MA, United States

Abstract

Optical glass fibers can exhibit, under severe environmental conditions, an accelerated static fatigue behavior at long times under moderate stresses. This behavior is manifested by a transition, or 'knee', in the plot of ln (time to failure) versus ln (applied stress). This accelerated fatigue effect depends on several variables, including temperature, relative humidity, and pH, as well as on the composition of the cladding and polymeric coating. Similarly, optical fibers can exhibit a pronounced strength degradation due to zero stress aging. It was found that the onset of significant strength loss during zero stress aging occurred at about the same time as the static fatigue transition. Also, the spread in the distributions of time to failure at a given applied stress narrows after the transition. These results suggest that zero stress aging represents a second mechanism of crack growth which takes place on a longer time scale and is superimposed on the crack growth of stress corrosion. Finally, a model was used to predict this accelerated fatigue behavior in optical glass fibers by assuming the combined influence of zero stress aging and stress corrosion on crack growth.

Citation Download Citation

Enrique Cuellar, Michael T. Kennedy, Daniel R. Roberts, and John E. Ritter Jr. "Zero stress aging and the static fatigue transition in optical glass fibers", Proc. SPIE 1791, Optical Materials Reliability and Testing: Benign and Adverse Environments, (25 February 1993); https://doi.org/10.1117/12.141160

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available