Electrohydraulic fatigue apparatus for testing in ultrahigh vacuum and controlled environments

Won Jong Lee*, Yip Wah Chung, Morris E. Fine, James P. Baker

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


A closed-loop computer-interfaced electrohydraulic fatigue apparatus was constructed and installed in an ultrahigh-vacuum (UHV) scanning Auger microprobe for the study of environmental effects on fatigue. Load- or (total or plastic) strain-controlled fatigue tests can be performed in the push-pull mode between atmospheric pressure and UHV (below 6.5 × 10-8 Pa) under controlled gaseous environments. The specimen mounting allows access of an electron beam for Auger analysis, an ion gun for sputtering and a secondary-electron detector for imaging. There have been several important improvements made in the electronics.

Original languageEnglish (US)
Pages (from-to)2854-2858
Number of pages5
JournalReview of Scientific Instruments
Issue number11
StatePublished - 1986

ASJC Scopus subject areas

  • Instrumentation


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