光ファイバ断割加工面のAE判定法に関するフラクトグラフィ的研究

概要

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In order to prepare a mirror-quality end of an optical glass fiber available for light communication, some devices of the breaking procedure have been on the market and used in the field. However, a complete mirror quality end surface cannot always be produced by breaking. Hence, a compact method to judge the fracture surface of the fiber must be developed. In the present study, AE detection, suggested from the mutual relationship between the released fracture energy and acoustic emission (AE) pulse, was experimentally examined to be suitable as a compact method to judge the quality-end surface produced by breaking, The ratio of the mirror-size to the fiber diameter can be controlled by changing the size of the cutter-cracked defect. Then, the AE pulse emitted on breaking and the fractography of the fiber by SEM were compared with each other. Through this comparison for all fibers tested, it was found that the ratio of the mirror-area to fracture surface is mutually related to the peak voltage and frequency of the AE pulse.
一般社団法人日本機械学会の論文
1991-01-25