20509 フレッティング摩耗に及ぼす磁場と周波数の影響(トライボロジーと機械要素(1),OS.11 トライボロジーと機械要素)

概要

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The effects of magnetic field on fretting wear of ferromagnetic materials were evaluated from observations of the worn surfaces and measurements of wear volumes. The tests were carried out in the sphere/plate contact at applied load of 20 to 46N. Steel sphere specimens (φ19.05mm) were fretted at the conditions of slip amplitude of 32μm and slip frequencies of 10 to 150Hz. Two levels of magnetic fields of 0.08 and 0.22T were generated using DC solenoids. The experimental results showed that fretted annular increased in the magnetic field on the low frequency in comparison with on the high frequency. This is due to the effects of the time dependency for the oxidation of frequency and the chemical (or oxidation) activity on wear under a magnetic field. That is, oxidized wear particles attracted by the magnetic field play roll abrasive action in lower frequency. The action should be accelerated by a change of contact pressure distribution in lower frequency.
一般社団法人日本機械学会の論文
2007-03-15