Predicting the Macroscopic Shear Strength of Tightened-Bonded Joints from the Intrinsic High-Pressure Properties of Anaerobic Adhesives

Abstract

This scientific study aims to validate the applicability of a micromechanical model for predicting the static shear strength of hybrid interfaces that are pressure-reinforced and bonded with anaerobic adhesives. To identify the parameters for the micromechanical model, a systematic experimental test plan involving high-strength steel butt specimens bonded with anaerobic adhesive in a finite thickness was performed. The experimental investigation was based on torque tests, which provided the shear strength of two anaerobic adhesives subjected to different values of contact pressure, ranging from 0 up to 1000 MPa. Based on the intrinsic high-pressure properties of the finite-layer adhesives, the formerly developed micromechanical model of hybrid interfaces satisfactorily predicted the macroscopic strength of tightened-bonded joints taken from the literature.

Kinetic Study of Anaerobic Adhesive Curing on Copper and Iron Base Substrates

“…Regarding mechanical properties, many studies have been carried out to date. The influence of the aspect ratio (coupling length over diameter) on the shear resistance of pressed and adhesively bonded joints has been investigated [ 20 ], along with the stress distribution of cylindrical joints [ 21 , 22 , 23 ], and the effect of interference [ 17 ]. Additionally, the behavior of the adhesive in blocking nuts has also been studied [ 24 , 25 ].…”

Full-Scale Testing on Seismic Performance of Surge Arrester with Retrofitted Composite Insulators

“…A bonded sleeve joint joins the GFRP tube and the sleeve of flange with an adhesive layer, which is more appropriate for hollow core insulators. Studies on bonded connections in engineering structures mostly focus on axial loads or torque loads [29][30][31], but bending is a less-researched subject [32]. However, composite insulators in substation equipment are primarily subjected to bending resulting from wind or earthquake actions.…”