Modification of ASTM Standard E1681 on Environmental Cracking to Include Bolt-Load Specimen Testing.

Abstract

Benet Laboratories experience with environmental cracking of cannon components has been combined with the technical expertise of various participants at ASTM technical meetings and symposia to develop a modification to ASTM Standard E1681. 'Test Method for Determining a Threshold Stress Intensity Factor for Environment Assisted Cracking of Metallic Materials Under Constant Load.' A bolt-loaded compact specimen has been added to the standard to allow constant displacement bolt-load tests of environmental cracking threshold. Recent investigations of environmental cracking in two cannon systems are briefly summarized including cracking in acids used in the electroplating process and cracking due to cannon propellant gases. The modified draft of ASTM Standard E1681 is presented, including the additions to test procedure, apparatus, and stress intensity factor expressions required to perform bolt-load tests of environmental cracking threshold.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1997
Accession Number
ADA327896

Entities

People

  • G. N. Vigilante
  • John H. Underwood
  • W. A. Vandersluys

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Air Platforms
  • Biomedical
  • Weapons Technologies

DTIC Thesaurus Topics

  • Cantilever Beams
  • Chemistry
  • Corrosion
  • Crack Tips
  • Intensity
  • Materials
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Military Research
  • Standards
  • Stress Corrosion
  • Stress Intensity Factors
  • Stresses
  • Test Equipment
  • Test Methods
  • Yield Strength

Readers

  • Aerospace Test and Evaluation
  • Computer Programming and Software Development.
  • Pavement Materials Engineering.