Experimental characterization and numerical modelling analyses of nano-adhesive-bonded joints

Abstract

Experimental and numerical characterizations of nano-adhesivebonded joints typically used in aerospace applications are presented. First, samples of single-lap joints produced using a composite reinforced with carbon fibre fabric (2% graphene by weight), were analysed. Five samples were produced by injecting nanostructure particles in the epoxy resin and five are not (non-reinforced resin). Shear tests were performed to measure the resistances of the bonded joints, to assess the structural performances of the structures with and without the resin. Second, finite-element numerical models were applied based on experiments on adhesive joints; in particular a numerical simulation of the adhesive lap-joint model was performed using ANSYS software. Analyses were performed for the joints with unfilled and nanofilled adhesive, focusing on the cooling process during which adhesive single-lap joints are mainly generated. The experimental and numerical model results generally agree quite well. Graphene increased the stiffness of each lap joint under a rational load charge. The nanostructure adhesive increased the failure load, but this increase depended on various parameters, including adhesive structural features and the structures of the nanostructures produced. The reinforced adhesive nanostructure was found to decrease the weight.

Shear Stress Distribution in Double-lap Adhesive Joints Reinforced with Nylon Fabric: Numerical Investigation

“…In numerous industrial applications (e.g., automotive [4], naval [5] and aerospace [6]), these characteristics are fundamental and therefore adhesive technology takes a preferential role over traditional joining methods, such as bolted or riveted joints [7][8][9]. Some of the most studied adhesive joints are singlelap (SLJ) and double-lap (DLJ) types [10][11][12]; both types are used to study adhesive shear joint behaviour [13].…”

Evaluation of Archaeological Bone Physical and Mechanical Properties after Treatment with Nano Paraloid

“…Nanoparticles are used to improve mechanical properties [13]. The improvements in strength, thickness, mechanical performance and overlap length obtained by using the Nano materials in the process on joining [14]. The uses of Nano materials give a good quality to the mechanical properties [15].…”

Comparative and Experimental Studies for Evaluation of Paraloid B-72 in Traditional and Nano Forms for Joining of Pottery Samples

“…Nanoparticles are used to improve mechanical properties of the adhesive mixtures [21]. The improvements in strength, thickness, mechanical performance and overlap length obtained by using the nano materials in the process on joining [22]. The use of nano-adhesives give a good quality to the mechanical properties [23].…”