Report 3. Task 1: A Detailed Study of Joint Failure Summary Report

A summary is provided of experimental work and theoretical modelling on the failure of adhesive joints. This Report No. 3 is a summary of nine other reports referred to as Annexes 1-9. The overall objective of the work described is to develop an understanding of how and where joints fail and to investigate whether analysis procedures can predict this.

Two joint types were investigated, the thick adherend shear test (TAST) and a T-peel joint. Four loading regimes were used, quasi-static, creep, cyclic and impact. Two adhesive types were studied, a one-part rubber toughened epoxy, AV119 (Araldite 2007) from Ciba (now Vantico) and a two-part acrylic, F241 from Permabond. As well as mechanical testing, the joints were studied using scanning electron microscopy, laser moiré interferometry and optical observations. The theoretical work used finite element modelling with the ABAQUS and DYNA3D codes.

The information included in the report covers: mechanical characterisation of the adhesives; data on joint mechanical performance, in tabulated form; observations on joint failure mechanisms. Conclusions are drawn on the effects of temperature, creep and cyclic (fatigue) loading on joint performance.





Copyright © 2003, TWI Ltd

	Close window
	Print