Abstract
Traditional material joining techniques are facing enormous challenges due to the widely use of new materials in engineering. Therefore, the application of bonding technique in engineering becomes more and more important. In order to facilitate evaluation of the adhesive joint strength, a simple and efficient adhesive joint strength evaluation method which applies to engineering application was proposed in this paper. Tensile and shear stresses were selected as the main research objects in the method considering the complex working conditions that many adhesive structures may face in engineering. Butt joint, single-lap joint and several groups of scarf-joint specimens with different adhesive angles were fabricated. Numerous repetitive tensile tests were conducted to determine the adhesive failure stresses under different conditions. The adhesive failure stress envelope was fitted based on the experimental data and the evaluation method of adhesive joint strength was developed in detail. Finally, verification experiments were designed to determine the validity and reliability of the evaluation method.
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