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Effect of adhesive layer elasticity on the fracture mechanics of a blister test specimen

✍ Scribed by D. P. Updike

Publisher
Springer Netherlands
Year
1976
Tongue
English
Weight
622 KB
Volume
12
Category
Article
ISSN
1573-2673

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✦ Synopsis

An analytical model of a blister type specimen for evaluation of adhesive bond strength is developed. The model accounts for shear deformation of both the plate and the adhesive layer in order to determine the extent to which a blister specimen may be considered to be a mixed mode fracture specimen. A method for relating the results of numerical stress analysis to energy balance concepts of fracture mechanics is presented. It is shown that the shear deformations have only a small effect on energy balance; however, the magnitude of the shear stress in the adhesive layer may reach a value of 25 percent of normal stress.

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