Study on fatigue behavior of adhesive-bonded butt joint (Effect of unbonded defects at adhesive/adherend interface on fatigue strength)

As a part of our ongoing study to investigate the effect of adhesive defects on fatigue strength of adhesive-bonded joint, a series of fatigue tests were carried out by using adhesive-bonded butt joints with unbonded layer at adhesive/adherend interface under the push-pull fatigue load condition of stress ratio R=-1.0.The specimens used possessed two unbonded portions of nail shape along the adhesive/adherend interface, which were located at the...