Investigation and verification of fatigue characteristic on the adhesive slanted interface of specimen with foaming aluminum for sliding mode

Abstract

Foaming aluminum is a super light weight manufactured by adding thickener and foaming agent after dissolving aluminum ingot to be foamed in a sponge configuration. Studying on fatigue of adhesive structures configured with aluminum foam and fracture toughness for adhesive interfaces may be considered very important. In this study, DCB specimens of aluminum foam composite material were designed based on British industrial standard (BS 7991) and ISO international specification (ISO 11343), and Mode II tests were performed. Examination of graphs of loads and displacements according to fatigue cycles for the four types of specimens shows that time capable of withstanding fatigue loads is the longer, the larger the slanted angle of the tapered double cantilever beam model under the same fatigue load conditions. Since similar results to those from actual experiments were observed based on comparisons of actual experimental data with analysis data, the analysis results according to a finite element method employed in this study could be relied upon, and it is considered that structural safety could be found by imulations alone in lieu of experiments requiring much cost and time when such method as this is applied.