Temperature effects on the torsional fatigue characteristics of adhesively bonded tubular single-lap joints

Abstract

Rubber-toughened structural epoxy adhesives are widely used for bonding structures because of their high toughness characteristic. However. the mechanical properties of structural epoxy adhesives degrade Much at high environmental temperature, which affects the performance of the adhesive joints severely. Therefore, in this study, the temperature effects on the static and fatigue characteristics of adhesively-bonded tubular single-lap joints were measured. Then the relations between the parameters of S-N curves and the static strength of adhesively-bonded tubular single-lap joints were obtained, from which a fatigue life prediction model for the adhesively-bonded tubular single-lap joints at elevated temperatures was developed.