An Experimental Study of Large Compressive Loads Upon Residual Strain Fields and the Interaction Between Surface Strain Fields Created by Coldworking Fastener Holes.

Abstract

This research investigated three related problems, namely: (1) the evaluation of the residual strain redistribution around an initially coldworked fastener hole in a semi-infinite plate subjected to large in-plane compressive loads; (2) the determination of the effects of a near edge of a row of coldworked holes parallel to such an edge, and the possible creation of a strain climate at the straight edge which could lead to stress corrosion problems; and, (3) the interactions of surface strain fields between rivet holes which are being coldworked. The strain distributions were obtained by a moire technique, with the aid of coherent optical processing and digital data reduction. Many useful conclusions about the residual strain fields near coldworked holes were established.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1981
Accession Number
ADA100524

Entities

People

  • Gary Cloud
  • Rajab Sulaimana

Organizations

  • Michigan State University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Cameras
  • Cold Working
  • Data Processing
  • Data Reduction
  • Elastic Properties
  • Fasteners
  • Finite Element Analysis
  • Manufacturing
  • Materials
  • Measurement
  • Mechanical Working
  • Mechanics
  • Photographs
  • Photography
  • Plastic Explosives
  • Stress Strain Relations
  • Two Dimensional

Readers

  • Structural Health Monitoring of Composite Structures.