This paper experimentally investigates bonded tubular specimens, which exhibit uniform stress distribution within the adhesive layer. The mechanical properties of a thin adhesive layer, subject to a singularity-free stress distribution, are immediately applicable to the description of real joint behavior. The proposed specimen consists of a tubular butt joint, with circumferentially machined stress-relief grooves adjacent to the adherend-adhesive interface. The groove geometry, simplified with respect to a previous numerical work from the author, allows significant reduction in edge effects - as confirmed by finite element analyses. The experimental campaign involves three variables: presence of the grooves, adherend material and adhesive thickness. The presence of stress-relief grooves gives higher failure loads for steel adherends, whilst aluminum adherends show strength reduction as adhesive thickness increases.

Caratterizzazione di provini tubolari incollati: regolarizzazione della tensione normale mediante gole schermo / Castagnetti, Davide; Spaggiari, Andrea. - STAMPA. - (2010), pp. 15-16. ((Intervento presentato al convegno XXXIX Convegno Nazionale AIAS 2010 tenutosi a Maratea nel 7-10 Settembre 2010.

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