Fracture Mechanics Tests and Defect Criteria for the 120-mm M121 Mortar Baseplate.

Abstract

Calculations of firing stress at several locations of the 120-mm M121 mortar baseplate were made based on available strain gage data. Measurements of fracture toughness were performed for seven weld and heat-treat conditions of the 4130 steel used for the baseplate. Calculations were made of the ratio of applied K to the critical K for fracture for various combinations of firing stress and material condition. Based on the results of the tests and calculations, allowed defect criteria for the baseplate were recommended. (MM)

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1995
Accession Number
ADA304892

Entities

People

  • D. Crayon
  • E. Troiano
  • John H. Underwood

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Army
  • Continuum Mechanics
  • Engineering
  • Fracture (Mechanics)
  • Gages
  • Information Security
  • J Integrals
  • Materials
  • Measurement
  • Mechanics
  • Military Research
  • Mortars
  • Security
  • Strain Gages
  • Stresses
  • Tensile Stress
  • Toughness

Readers

  • Metallurgy
  • Structural Health Monitoring of Composite Structures.
  • ballistics.