VAMAS intercomparison of ac loss measurement: Japanese results

K. Itoh, H. Wada, T. Ando, E. Yoneda, D. Ito, M. Iwakuma, K. Yamafuji, A. Nagata, K. Watanabe, Y. Kubota, T. Ogasawara, S. Akita, M. Umeda, Y. Kimura, K. Tachikawa

Research output: Chapter in Book/Report/Conference proceedingChapter

5 Citations (Scopus)


The first worldwide round robin test on ac losses was carried out, where 10 Japanese labs participated. 4 test samples, D, E, F and G, were prepared, and ac losses were measured as a function of either applied field amplitude or transport current. A variety of measurement methods were adopted, and an interim intercomparison of the results was made in terms of the hysteresis loss for 0 to 1 T field cycle as well as the coupling time constant. The standard deviation in hysteresis loss among labs including those of US and European labs so far reported was about 10% for both high loss samples D and E. Time constants obtained among labs were in a relatively poor agreement with each other.

Original languageEnglish
Title of host publicationAdvances in Cryogenic Engineering
PublisherPubl by Plenum Publ Corp
Number of pages8
Editionpt A
ISBN (Print)0306435985
Publication statusPublished - 1990
Externally publishedYes
EventProceedings of the 8th International Cryogenic Materials Conference ICMC - Los Angeles, CA, USA
Duration: Jul 24 1989Jul 28 1989


OtherProceedings of the 8th International Cryogenic Materials Conference ICMC
CityLos Angeles, CA, USA

All Science Journal Classification (ASJC) codes

  • General Engineering


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