Analysis of the Failure of a Vacuum Spin-Pit Drive Turbine Spindle Shaft

Abstract

The Naval Postgraduate School's Rotor Spin Research Facility experienced a failure in the Spring of 2005 in which the rotor dropped from the drive turbine and caused extensive damage. A failure analysis of the drive turbine spindle shaft was conducted in order to determine the cause of failure: whether due to a material or design flaw. Also, a dynamic analysis was conducted in order to determine the natural modes present in the system and the associated frequencies that could have contributed to the failure of the shaft. It was concluded that the failure was due to low cycle fatigue, a possible stress concentration was identified, and a torsional mode was found near the speed at which failure occurred.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2005
Accession Number
ADA439579

Entities

People

  • Jason M. Pettitt

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Crack Propagation
  • Electron Microscopes
  • Electron Microscopy
  • Engineering
  • Failure Analysis
  • Failure Mode And Effect Analysis
  • Frequency
  • Heat Treatment
  • Materials
  • Materials Science
  • Mechanical Engineering
  • Microscopy
  • Research Facilities
  • Resonant Frequency
  • Scanning Electron Microscopy
  • Transient Response Analysis
  • United States Naval Academy

Readers

  • Aerospace Engineering
  • Electrical Engineering
  • Structural Health Monitoring of Composite Structures.