609 エポキシ系異材継手のせん断強度及び破断特性の評価(OS10-(1)オーガナイズドセッション《材料損傷の機構・実験評価》)

概要

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In this paper, the effect of bond thickness upon the shear strength of epoxy adhesively bonded joints with dissimilar adherends is addressed. The bond thickness, t between the adherends is controlled to be ranged from 0.1 mm to 1.2 mm. Finite element analyses are also executed by ANSYS 11 code to investigate the stress distributions in adhesive layer of adhesive joints. The order of stress singularity is obtained from the analytical solution of Bogy's characteristics equation. As a result, shear strength of adhesive joint reduces with increasing bond thickness. Moreover, the failure of dissimilar adherends bonded shear joint has been initiated at a location with critical stress singularity order which is the interface corner of aluminium/adhesive. It is found that the shear strength prediction can be satisfactorily done by interface corner toughness, Hc parameter.
2010-08-27