A literature review has been carried out relating to the damage and fracture behaviour of composite laminates based on woven fabric reinforcement containing a stress raiser in the form of either a circular hole or of a mechanically fastened joint – the tensile failure modes in these two types of problem are very similar. Closed form and finite element based approaches that enable the stress dis...

The mechanical properties of Z-pins reinforced composites adhesively bonded single-lap joints (SLJs) under un-directional tension loading are investigated by experimental and numerical methods. Three kinds joint configurations, including SLJs with three/two rows “I” array Z-pins, test. failure modes mechanism different numbers alignment analyzed, the comparison is performed for strengths no joi...

This paper presents a new self-clinching fastener to connect two sheets (or plates), made from similar or dissimilar materials, placed over one another by means of mechanical form-closed joint that is hidden inside the sheets. The development fastener, definition its main design variables and identification workability limits are carried out combined experimental numerical simulation work based...

in this research, the influence of bolt preload on the fatigue strength of 2024-t3 aluminium alloy double lap bolted joints has been studied experimentally and numerically. to do so, three sets of the specimens were prepared and each of them subjected to tightening torque of 1,2.5 and 5 n-m and then fatigue tests were conducted under various cyclic axial load levels. in the numerical method, th...

Strength tests on single lap joints with one adhesive (AV138/HV998) and layer thickness (0.5 mm), three peel stoppers (brass bolt, nylon bolt steel pin), four lengths (12.5 mm, 25 40 mm 100 mm) were conducted to investigate the effects of varying length stiffness peel-stop fasteners. Joint failure stress decreased, but force increased length. Furthermore, joint was higher stopper. The effect br...

The present paper concerns developing an automated system for non-destructive evaluation of riveted aluminium joints. The system features an innovative eddy-current probe providing high sensitivity at low inspection frequencies and a computational tool aimed both at computer-aided electromagnetic design of the probe and quantitative reconstruction of detected defects (inverse problem). The appr...