A Beam Test for Adhesives

Abstract

The strength of materials solution for a new bonded cantilever beam test specimen to determine adhesive shear properties is reviewed and discussed. A parametric analysis for the adhesive shear stress and for the end deflection reveals the specimen dimensions required for reliable bonded adhesive shear properties determination. Recommendations are provided for conducting reproducible tests. A pure and quasi-uniform shear test for stiff adhesives is proposed. Analytical solutions are compared with Finite Element solutions from VISTA and NOVA for the stresses in the adhesive. It appears that the assumption of pure shear is nearly valid even for very stiff and/or very thick adhesives. In order to increase the end point deformations for stiff adhesives, a modified specimen is proposed. Three-dimensional effects through the thickness of the adhesive layer are studied with the program ABAQUS. (jes)

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Document Details

Document Type
Technical Report
Publication Date
Jul 31, 1988
Accession Number
ADA198803

Entities

People

  • Hal F. Brinson
  • Valerie F. Fior

Organizations

  • Virginia Tech

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Composite Materials
  • Elastic Materials
  • Engineering
  • Experimental Data
  • Finite Element Analysis
  • Literature Surveys
  • Materials Testing
  • Mechanical Properties
  • Mechanics
  • Numerical Analysis
  • Parametric Analysis
  • Shear Modulus
  • Shear Tests
  • Test And Evaluation
  • Test Methods
  • Three Dimensional

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Mechanical Engineering/Mechanics of Materials.