Effects of Fabrication and Joining Processes on Compressive Strength of Boron/Aluminum and Borsic/Aluminum Structural Panels,

Abstract

Methods for forming and joining boron/aluminum and Borsic/aluminum to themselves and to titanium alloys have been studied at the NASA Langley Research Center. The present study was conducted to determine the effects of joining and fabrication methods on panel compressive strengths for composite skin and titanium skin panels with composite stringers. The stringers and panel skins were joined by high strength bolts, by spo welding, by diffusion bonding, by polyimide adhesive bonding, or by brazing. The test results show that hot and cold forming of metal-matrix composite stringers did not degrade fiber properties, whereas a eutectic consolidation and fabrication process did cause fiber degradation. Of the processes investigated for joining the metal-matrix stringers, the diffusion-bonded and adhesive-bonded panels developed the highest buckling loads and stresses. A program for predicting buckling loads (BUCLASP2) consistently predicted higher buckling loads than were determined experimentally.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1978
Accession Number
ADA301715

Entities

People

  • Dick M. Royster
  • H. R. Wiant
  • Robert R. Mcwithey

Organizations

  • Langley Research Center

Tags

Communities of Interest

  • Advanced Electronics
  • Space

DTIC Thesaurus Topics

  • Aluminum Alloys
  • Cold Working
  • Composite Materials
  • Compressive Strength
  • Fabrication
  • Fasteners
  • Hot Working
  • Joining
  • Joints
  • Manufacturing
  • Material Degradation Processes
  • Materials
  • Materials Processing
  • Mechanical Properties
  • Mechanical Working
  • Metal Matrix Composites
  • Modulus Of Elasticity

Fields of Study

  • Materials science

Readers

  • Reinforced Composite Materials
  • Structural Dynamics.