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| Format: | Artículo científico |
| Language: | en |
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Sociedade Brasileira de Física
2011
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| Online Access: | https://www.redalyc.org/articulo.oa?id=46421512003 |
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Table of Contents:
- The Influence of Hydrogen Loading Temperature on the Mechanical Strength of Optical Fibers Giovana de Fátima Menegotto Paulo César Borges Eduardo Mauro do Nascimento Carlos Maurício Lepienski Elaine Cristina Azevedo Física, Astronomía y Matemáticas Glasses Hidrogen Photosensitivity Optical materials Mechanical properties The influence of hydrogen loading temperature on the mechanical strength of optical fibers is investigated. Fibers subjected to high-pressure hydrogen loading at different temperatures were submitted to bend tests, and the results compared with those for pristine fibers. The Weibull probability distribution function was used to analyze the data of the mechanical bending strength of the fibers. Fiber strength is reduced by the presence of hydrogen, and this decrease is greater for higher hydrogen loading temperatures. The mechanical properties of the polymers used to coat fibers are affected by the hydrogen loading process and also by the increase in temperature. However, there is no evidence of cracks formation that might allow water to penetrate to the surface of the glass. Observation using scanning electron microscopy revealed that the morphology of fractures in nonhydrogen-loaded fibers have distinct fracture characteristics to that of fibers that are hydrogen loaded at 90°C and 120°C. 2011 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46421512003 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4-6 Vol.41