Frictional coefficients of structural materials in AC superconducting coils

Sekine, N.; Takao, T.; Shoji, Tetsuo; Toyama, Haruko; Kashiwazaki, K.; Sugasawa, N.; Nakamura, Kazuya; Kashima, Toshihiro; Yamanaka, Akihiro; Takeo, M.; Sato, Saburo

doi:10.1016/s0011-2275(01)00110-2

Cited by 8 publications

(2 citation statements)

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“…5. The DGFRP has a characteristic of low frictional coefficients [8], and the characteristic is confirmed by this experiment.…”

Section: B Properties Of Dgfrpsupporting

confidence: 75%

“…We used two kinds of structures whose frictional coefficients were different. We guess that alumina fiber reinforced plastics (AFRPs) are relatively high frictional coefficients, and it is known that Dyneema and glass fiber reinforced plastics (DGFRPs) are low frictional coefficients [8]. And we measure the relation between the frictional losses and the frictional coefficients.…”

Section: Experimental Preparationmentioning

confidence: 99%

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Mechanical losses and frictional properties of bobbin surfaces in AC superconducting coils

Takao

Shoji

Kashiwazaki

et al. 2002

IEEE Trans. Appl. Supercond.

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During excitation of an AC superconducting coil, cyclical electromagnetic force is applied to the AC winding. The force causes mechanical vibration of the winding, and hence mechanical loss due to the vibration occurs. We have measured the mechanical loss under the conditions that were two kinds of bobbin materials whose surfaces were low and high frictional coefficients. The experimental results showed that frictional heating on the surface of the low-frictional-coefficient material increased with the gain of the contact force between the wire and the material. On the other hand, the heating on the high-coefficient material was decreased when the contact force increased.

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“…5. The DGFRP has a characteristic of low frictional coefficients [8], and the characteristic is confirmed by this experiment.…”

Section: B Properties Of Dgfrpsupporting

confidence: 75%

Section: Experimental Preparationmentioning

confidence: 99%