Failure Analysis of the Lightweight Company Mortar System 60 mm Mortar Fin

Abstract

An investigation of the XM27 fin section was conducted to determine the failure mechanism associated with the longitudinal separation of the fins during test firings. The investigation implied that improper process controls during billet cooling resulted in microcracks, with high concentrations of magnesium and silicon in the area of the cracks. Upon extrusion, this defect was transferred to the extruded fin section resulting in fins which would not withstand the internal pressures attained during firing. Several recommendations are made to eliminate all defective fins from the final accepted parts. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1978
Accession Number
ADA061436

Entities

People

  • Joel Shappirio
  • Pat Calella

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Advanced Electronics
  • Biomedical
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aluminum Alloys
  • Electron Beams
  • Electron Microscopes
  • Electron Microscopy
  • Electron Probes
  • Electrons
  • Elements
  • Failure Analysis
  • Failure Mode And Effect Analysis
  • Materials
  • Measurement
  • Microscopes
  • Microscopy
  • Munitions
  • Scanning Electron Microscopy
  • Test And Evaluation
  • X Rays

Fields of Study

  • Engineering

Readers

  • Combustion and Flow Dynamics.
  • Metallurgy
  • Pavement Materials Engineering.