Unit S3 of the Hughes Vuilleumier (VM) Cryocooler Program has undergone accelerated life testing at twice the service speed expected in a normal unit. Debris samples were obtained from all areas of the cooler; samples of the regenerator balls were collected from the second and third stages only. The debris has been identified by an investigative analysis using the analytical techniques of X-ray diffraction, IMMA, and SEM/EDXS. Most of the particulates contain a combination of Iron, Chromium, and Nickel or Molybdenum Niobium compounds.
Analysis of Debris from Accelerated Life Test of the Hughes Five-Year Vuilleumier Cryocooler
1987
17 pages
Report
No indication
English
Industrial & Mechanical Engineering , Debris , Refrigeration systems , Accelerated testing , Chromium , Cryogenics , Iron , Life tests , Molybdenum compounds , Nickel , Niobium compounds , Particulates , Sampling , Velocity , X ray diffraction , Vuilleumier cycle , Cryocoolers , IMMA(Ion Microprobe Mass Analysis)
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