Investigating the Effects of Service History on Al Ship Plates

Abstract

The work involved a systematic study to determine the effects of changes in thermal exposure conditions (i.e. time, temperature), and environment(e .g. dry air, humid air, solutions) on the environmental cracking susceptibility of 5083-H131 alloy plate. Experiments were conducted using slow strain rate tension (SSRT) and fatigue crack growth using dcPD to determine the effects of changes in loading rate on cracking susceptibility. In addition, access to high-resolution tomography occurred via a visit to the Harwell Diamond Light Source (DLS), UK, where in-situ cracking experiments were conducted as well as tomography experiments on previously tested samples. In addition, Al-Mg alloy plates were retrieved in the third year of the grant from the HMCS Iroquois after 42-year service. Preliminary experiments were conducted on these plates in a manner similar to that conducted on the 5083-H131.

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Document Details

Document Type
Technical Report
Publication Date
May 24, 2018
Accession Number
AD1057356

Entities

People

  • John J. Lewandowski

Organizations

  • Case Western Reserve University

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Advanced Materials
  • Aluminum Alloys
  • Engineering
  • Environment
  • Failure Mode And Effect Analysis
  • High Resolution
  • Light Sources
  • Materials
  • Materials Engineering
  • Materials Science
  • Mechanical Properties
  • Ship Plates
  • Strain Rate
  • Stress Corrosion Cracking
  • Stresses
  • Tensile Strength
  • Tensile Testing

Readers

  • Materials Science and Engineering.
  • Naval Architecture and Marine Engineering.
  • Technical Research and Report Writing.