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A Liquid Helium Distributing Refrigerator for Materials Testing Machines

  • M. Akamatsu
  • M. Taneda
  • Y. Ohtsu
  • T. Ohtani
  • T. Tsukuda
  • S. Kataoka
  • T. Horiuchi
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 31)

Abstract

A Recondensing-type cryostat cooling system, which can supply liquid helium to three machines to test material fatigue at liquid helium temperature, was developed. By the use of a Claude-type refrigerator and distribution of the individually to recondensers installed in the cryostats of the three machines, each of which has a different function, the specimen in each cryostat can be kept at liquid helium temperature independently. During test operation of this system for 500 hours, each cryostat was cooled, warmed and recooled selectively so as not to disturb the stability of the other refrigerating cryostats. As a result, it was proven that the developed system makes it possible to efficiently carry out a diversity of fatigue tests at liquid helium temperature.

Keywords

Heat Load Liquid Helium Fatigue Crack Propagation Feedforward Control Refrigeration System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Reference

  1. 1.
    T. Ohtani et al., Performance test of new recondensing type cooling system designed for fatigue testing machine at liquid helium temperature, in: “Proc. 9th Intl. Cryo. Engr. Conf.,” Butterworth, Guildford, UK, (1982), p. 604.Google Scholar

Copyright information

© Plenum Press, New York 1986

Authors and Affiliations

  • M. Akamatsu
    • 1
  • M. Taneda
    • 1
  • Y. Ohtsu
    • 1
  • T. Ohtani
    • 1
  • T. Tsukuda
    • 1
  • S. Kataoka
    • 1
  • T. Horiuchi
    • 1
  1. 1.Mechanical Engineering Research LaboratoryKobe Steel, Ltd.KobeJapan

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