Evaluation of the fatigue strength of adhesive joints based on interfacial fracture mechanics
Abstract
Fatigue tests of the single lap adhesive joints (SLAJ) of thin mild steel plates were carried out and the effect of the thickness of the adhesive and plate on the fatigue strength was investigated. The boundary element 2D elastostatic analysis was also carried out and the effect of the adhesive and plate thickness on the stress distribution at the interface was investigated. Moreover, to evaluate the fatigue strength of adhesive joints quantitatively, the stress intensity factors for interface cracks in the adhesive joints were analyzed by using BEM. It was found that the stress intensity factor range can well characterize the fatigue strengths of SLAJ type adhesive joints with different adhesive and plate thicknesses. It is expected that the interfacial fracture mechanics is very useful for evaluating the fatigue strength of the adhesive joints.
- Publication:
-
Japan Society of Materials Science Journal
- Pub Date:
- August 1992
- Bibcode:
- 1992JSMSJ..41.1299Y
- Keywords:
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- Adhesive Bonding;
- Fatigue Tests;
- Fracture Mechanics;
- Fracture Strength;
- Interface Stability;
- Joints (Junctions);
- Boundary Element Method;
- Elastoplasticity;
- Stress Distribution;
- Stress Intensity Factors;
- Structural Mechanics