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Abstract: The present study is concerned with the failure analysis of a special type of adhesive corner joint, which is essentially a rectangular cantilever bonded to a support. A shape factor that allows correlating the static strength of two joints with different geometries is proposed. The relation is valid for adhesives with brittle–elastic behaviour and highly resistant adherends. Therefore, only a few tests performed in particular joint taken as reference are necessary for assessing the structural integrity of any similar joint with arbitrary geometry. Results from experiments performed in ASTM 1020 steel tee joints with different bonding areas are compared with model prediction showing a good agreement. The adhesive was an epoxy/ceramic composite used in the oil industry for the repair and protection of metal surfaces subjected to corrosion and chemical attach. [Copyright &y& Elsevier]

Abstract: In this paper it is proposed a phenomenological framework to perform the failure analysis of a family of adhesive single lap joints. The theory is conceived for adhesives with quasi-brittle behaviour and highly resistant adherends. The main goal is to predict the rupture force using model equations that combine enough mathematical simplicity to allow their usage in engineering problems with the capability of describing a complex nonlinear mechanical behaviour. The material constants that appear in the model equations are identified for an adhesive/adherend system consisting of ASTM A36 steel plates bonded with an epoxy/ceramic composite. Results from experimental tensile testing of joints with different bonded areas were compared with model prediction showing a good correlation. [Copyright &y& Elsevier]

The aim of the present paper is to propose a simple methodology to predict the failure pressure of wall loss defect metallic pipes reinforced with a polymer based composite repair system. 80% wall loss defects were manufactured into the pristine pipeline specimen and the failure pressure of the repaired pipeline was determined using hydrostatic tests and validated with the proposed methodology. The proposed methodology defines a simple expression which allows to estimate the failure pressure using only the elastic properties of materials. A more conservative value of failure pressure was obtained by using this methodology as compared to the ISO/TS 24817 standard. However, the failure pipe exhibited a plastic deformation at far away from the defect region, consequently this behaviour needs to be considered in the failure analysis for an accurate prediction of failure pressure. [ABSTRACT FROM AUTHOR]