Damage and plasticity in adhesive layer : an experimental study

• An experimental method is developed to identify a suitable model of in-elastic behaviour of an adhesive layer. Two prototype models are considered: an elastic-plastic model where the in-elasticity is considered due to permanent straining of the adhesive and an elastic-damage model where the in-elasticity is due to a reduction in elastic stiffness. Simulations show that the evaluated property is sensitive to the choice of model. In the experimental study of an engineering epoxy adhesive, the elastic-damage model fits the experiments. The study also reveals that plasticity and damage accumulated at the crack tip influences the evaluated fracture properties.

Keyword

Adhesive

Epoxy

Elastic-damage

Elastic-plastic

DCB-specimen

Peel

R-curve

Teknik

Technology

Publication and Content Type

ref (subject category)

art (subject category)