Combined Mode Crack Extension in Adhesive Joints,

Abstract

Crack extension in an adhesive system under combined mode loading is investigated. The specimens were obtained by bonding aluminum adherends with a Dow 332 epoxy resin mixed with 10% TEPA hardener and postcured at 180 F. A finite element stress analysis for a slant edge-cracked (SEN) plate furnishes the opening and shear mode stress intensity factors over a wide range of slant angles and crack lengths. By varying the angle between the adhesive layer and the load line in an SEN specimen combined mode crack extension is observed and the combined mode fracture toughness values are then determined. The effect of the location of the crack tip (center of bond or interface) IS ALSO DISCUSSED. (Author, modified-PL)

Document Details

• Document Type: Technical Report
• Publication Date: Nov 01, 1971
• Accession Number: AD0741687

Entities

People

• G. G. Trantina

Organizations

• University of Illinois Urbana–Champaign

Tags

DTIC Thesaurus Topics

• Adhesives
• Aluminum
• Crack Tips
• Cracks
• Elements
• Epoxy Resins
• Intensity
• Mechanical Properties
• Physical Properties
• Resins
• Stress Analysis
• Stress Intensity Factors
• Stresses
• Toughness

Readers

• Materials Science (Mechanical Engineering).
• Surface Coatings Technology.