Evaluation of Bonding Gap Control Methods for an Epoxy Adhesive Joint of Carbon Fiber Tubes and Aluminum Alloy Inserts

Abstract

The aim of this paper is to compare two methods of epoxy adhesive bond gap control: one with a geometrical (mechanical) solution and the other with glass beads, which have the diameter of the desired bond gap and are mixed with an epoxy adhesive. The adhered materials were carbon fiber composite tubes and aluminum alloy inserts, which were used as wishbones in a suspension system of a motorsport vehicle. It was assumed that the gap thickness would be equal to 0.2 mm and the length of a bond would be 30 mm. The internal diameter of the tubes was 14 mm and 18 mm, whereas the inserts’ external diameter was 13.6 mm and 17.6 mm. Their surface has been subjected to mechanical treatment with sand paper starting from 240 grit up to 400. The adhesives used were EA 3425 and EA 9466 cured at 80 °C for 2 h. The results showed that the glass beads method provides more consistent and better results as compared to the geometrical (mechanical) method. Further study in the area of fatigue and interfacial failure modes could be useful.

Comparison of Flight Safety Between Different Aircraft Modifications

“…Its product range includes commercial aircraft, systems and military aircraft, and is involved in the space industry Boeing (2023b); Oravec et al (2021); Giel and Plewa (2016b). The corporation employs more than 140,000 people in more than 65 countries worldwide Boein (2023); Sun and Geng (2021); Rzadkowski et al (2021). Aircraft delivery data published on the website includes parameters such as:…”

Structural Health Monitoring of Adhesively Bonded Pipe-to-Socket Joints by Integration of Polymer Optical Fibers and Their Load-Dependent Transmission Properties

“…More specifically, this technology results in good stress distribution on the pipe-to-socket joint and the replacement of materials from metals to polymers (fiber reinforced polymers (FRP)) because of their manufacturing benefits, lower weight, and good corrosion resistance [ 2 ]. Adhesively bonded pipe-to-socket joints are therefore used in numerous industrial applications including the transport of media [ 3 ] (e.g., pipelines on offshore oil platforms) [ 2 ] and in structural joints (e.g., in construction [ 4 , 5 ], wind energy [ 6 ], and the vehicle industry) [ 7 ]. There is a growing need for monitoring methods as the use of adhesive bonding technology in pipe construction increases.…”

Comparative Tests of Shear Strength of Adhesive Lap Joints after Thermal Shocks

“…With the state of the art today it is possible to make hybrid joints by combining adhesive processes and traditional joining methods, like pressure welding or riveting [10][11][12].…”