The Analysis and Design of Composite Material Bonded Joints under Static and Fatigue Loadings

Abstract

Extensive research was conducted providing analysis methods and design methodology for bonded joints in structures of laminated composite materials under static and fatigue loads. An analytical closed form solution has been developed for stresses and deformations in the adhesive joint and the adherends, including transverse shear deformations and normal strain, adherend anisotropy, and adhesive properties. A DIGITAL PROGRAM PROVIDES RAPID DESIGN AND ANALYSIS; AN INCLUSIVE PARA-METER STUDY PROVIDES TRENDS AND METHODOLOGY. Static tests have been developed providing shear and extensional stiffnesses and ultimate stresses of the adhesive in the joint configurations. Fatigue tests were conducted for various geometries, loadings, and adherend materials. Excellent correlation is shown between the ultrasonic and destructive test modulus measurements. Two new test methods are advanced to measure the shear and tensile properties of the adhesive as they exist within the joint. Ultimate and fatigue test results of 1002-S fiberglass adherends bonded with Hysol EA 951 film are given.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1973
Accession Number
AD0766932

Entities

People

  • Jack R. Vinson
  • W. J. Renton

Organizations

  • University of Delaware

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Creep
  • Elastic Properties
  • Failure Mode And Effect Analysis
  • Materials
  • Materials Testing
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Modulus Of Elasticity
  • Shear Modulus
  • Shear Stresses
  • Stress Strain Relations
  • Stresses
  • Tensile Properties
  • Tensile Strength
  • Test And Evaluation
  • Three Dimensional

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Structural Health Monitoring of Composite Structures.
  • Surface Coatings Technology.